Sapphire HD4850 Bios Modded, Core upper Limit to 850Mhz in CCC!

[leonarderman]

I have modded sapphire Bios, GPU Core upper limit to 850MHz, memory upper limit to 1300MHz. You can download here. Try and Good luck! :D


I - HD4850 Bios (Modded by Leonarderman).

1. Sapphire HD4850 Hard Overclocked. DF Core 750MHz Mem 1100MHz Auto Cool Fan.
GPU Core upper Limit 850MHz
Memory Upper limit 1300MHz
Vcore Modded to 1.327V for higher Overclocking.

Sapphire HD4850 Hard Overclocked (http://thienloipc.com/leonarderman/hd4800bios/HD4850v11327.bin)


2. Sapphire HD4850 Light Overclocked. DF Core 700MHz Mem 1000MHz Auto Cool Fan.
GPU Core upper Limit 850MHz
Memory Upper limit 1300MHz
Vcore DF 1.12V

Sapphire HD4850 light Overclocked (http://thienloipc.com/leonarderman/hd4800bios/HD4850v1112.bin)



3. Asus HD4850 Light Overclocked. DF Core 700MHz Mem 1100MHz Auto Cool Fan.
GPU Core upper Limit 1200MHz
Memory Upper limit 1400MHz
Vcore DF 1.12V

Asus HD4850 Light Overclocked (http://thienloipc.com/leonarderman/hd4800bios/ASUS.4850.PCIe.512MB.Rev.01.bin)


4. Sapphire HD4850 Toxic. DF Core 675MHz Mem 1150MHz Auto Cool Fan.
GPU Core upper Limit 700MHz
Memory Upper limit 1200MHz
Vcore DF 1.12V

Sapphire HD4850 Toxic (http://thienloipc.com/leonarderman/hd4800bios/sapphire_RV770_Toxic.bin)



You should create an USB Bootable to Dos. You can make it from the guide here:

http://www.thepcspy.com/read/bootable_usb_flash_drive

Then you have to copy ATIFlash programs 3.6 (download below) or newer (Dos) and Bios file to USB Disk. Try it done! :D

http://www.techpowerup.com/downloads/1123/ATIFlash_3.60.html


Please note: Updating by ATIFlash 3.6 or newer (Dos), don't try to use ATI WinFlash, because I found the problem from bios file maked by RBE1.12! :)

[GAR]

do you actually get 1.327 from bios mod???

[gurusan]

how did you change the CCC limit?

[leonarderman]

how did you change the CCC limit?


I had modified Bios by Hexeditor! :D

@ GAR: Yes! It work good!

[gurusan]

atiflash tells me its an invalid bios image....

[purecain]

well i hope this voltage increase through the bios is accurate... should inspire some research into getting the 4870 volts up aswell...

everyone has been saying that upping the voltage through the bios doesnt work...

[GAR]

can someone check with a DMM to see if the voltage change actually works??? if it does that would be amazing.

[Kinshou Kuma]

Ok am willing to fry a 4850 when I get home.
Anyone else trying these.

[HousERaT]

Voltage above 1.2v via bios? I'm not buying it till I see some proof.

Is this bios from a card with Samsung memory?

[GAR]

I tried this bios with no luck, 750 locked up COD4 within 1 minute, i dont think 1.3v through bios is possible. We need some hard proof with a pic of a dmm showing 1.3v

[HousERaT]

I tried this bios with no luck, 750 locked up COD4 within 1 minute, i dont think 1.3v through bios is possible. We need some hard proof with a pic of a dmm showing 1.3v
Does the bios allow for the extended range in CCC? Got a screenshot?

[jimmyz]

Does the bios allow for the extended range in CCC? Got a screenshot?

I have a working unlocked bios, right now i have a 4870 and a 4850 bios both with the limits raised. I will need some testing (flashing back to stock and reflashing etc). so far it works fine in XP Pro and Vista 64bit ultimate. so stay tuned.

as to the voltage, the bios can only raise 4850's to around 1.21 the controllers physical limit, IMO not worth the effort. there are many pages in the volt mod thread to show how to get steady reliable voltage as high as 1.6+. and also several pencil mods to get a nice bump over stock if soldering is not your thing.

http://img212.imageshack.us/img212/714/1100cccbiosmodda2.jpg

[HousERaT]

I look forward to your bios Jimmyz :)

[Mysterfix]

I look forward to your bios Jimmyz :)

Me too, the one's at the top of the page work ok but the CCC limit is 850mhz on the core.

[awdrifter]

Will this bios work for the Asus version of the 4850? Thanks in advance.

[leonarderman]

I tried this bios with no luck, 750 locked up COD4 within 1 minute, i dont think 1.3v through bios is possible. We need some hard proof with a pic of a dmm showing 1.3v


Well! I'm sorry! I have test Hard overclocked Bios with HD4850 + Zalman VF900, it work good, but I don't care about your HD4850.

I think you should try light Overclocked Bios to get another result! Good luck! ;)

[leonarderman]

Me too, the one's at the top of the page work ok but the CCC limit is 850mhz on the core.


I can modify Upper limit to over 1000MHz, but I think it's no needed because you have to mod Vcore to 1,6V to get GPU core over 1000MHz. It's hard modded! :rolleyes:

If you want, I'll send to you new Bios Upper limit to 1500MHz :D

[Mysterfix]

I can modify Upper limit to over 1000MHz, but I think it's no needed because you have to mod Vcore to 1,6V to get GPU core over 1000MHz. It's hard modded! :rolleyes:

If you want, I'll send to you new Bios Upper limit to 1500MHz :D

That would be nice since I already have the cards hard modded with vr's for the voltage. Just waiting on another waterblock before I really start to push them.

[AgentGOD]

Anyone try the "Hard overclocked" BIOS on the stock cooler yet? I'm hesitant to flash it since I have a Visiontek card, and I'm on the stock cooler.

[ultimate11]

Will this bios work for the Asus version of the 4850? Thanks in advance.

dont even think about it :)

[regenade]

so no guinea pigs to test the Toxic 4850 bios on the reference Quimonda memory based HD 4850s :P

[MadMikeSS]

Well, I tried the hard overclock bios and now the light. My HIS 4850 seems to have a limit on the core which is why I dropped to the light clocked bios. I wasn't able to step back down from 750 through CCC with the hard clocked version. I am also running into a problem with drivers. I have tried to install the 8.8 betas that came out and it doesn't recognize that I have a valid ATI card. 8.7's seem to be fine though having also the upper limits as stated for the bios.

[MadMikeSS]

so no guinea pigs to test the Toxic 4850 bios on the reference Quimonda memory based HD 4850s :P

Send it. :) I'd try it.

[AgentGOD]

Anyone try the "Hard overclocked" BIOS on the stock cooler yet? I'm hesitant to flash it since I have a Visiontek card, and I'm on the stock cooler.
?????????

[leonarderman]

I have updated new Bios. You can try another Bios to get more Result! Good luck! :D

[MadMikeSS]

Anyone wanna mod my HIS HD4850 bios to increase my upper limit to around 800/1300?

This is a capture of my stock bios: HIS 4850 Stock Bios (http://thepengellys.com/stuff/hishd4850bios/HD4850bios.bin)

[sarmat]

Hi.

As I see, there is a possibility to raise Overdrive limits in BIOS. Why do you modifying old BIOSes (1.0003)? Please, raise up limits to 800/1300 in new 1.0004 BIOS from PowerColor/Sapphire (http://www.techpowerup.com/vgabios/16845/Powercolor.HD4850.512.080602.html) and release it with checksum fixed if that's possible. Please don't change anything else (including fan settings) - only limits. I need this BIOS in this form. Thanks in advance.

Regards,
sarmat.

[leonarderman]

Hi.

As I see, there is a possibility to raise Overdrive limits in BIOS. Why do you modifying old BIOSes (1.0003)? Please, raise up limits to 800/1300 in new 1.0004 BIOS from PowerColor/Sapphire (http://www.techpowerup.com/vgabios/16845/Powercolor.HD4850.512.080602.html) and release it with checksum fixed if that's possible. Please don't change anything else (including fan settings) - only limits. I need this BIOS in this form. Thanks in advance.

Regards,
sarmat.


Here is your Bios: Power Color (http://thienloipc.com/leonarderman/hd4800bios/Powercolor.HD4850.512.0004.bin)

I have changed Core upper limit to 1250MHz and memory upper limit 1450MHz
And I don't change anything else!

Good luck! ;)

[MadMikeSS]

Here is your Bios: Power Color (http://thienloipc.com/leonarderman/hd4800bios/Powercolor.HD4850.512.0004.bin)

I have changed Core upper limit to 1250MHz and memory upper limit 1450MHz
And I don't change anything else!

Good luck! ;)


leonarderman, you think you can mod my HIS bios just for increased upper limit of around 800/1300.

[Azh_fx]

any chance of modding the bios Power Color (http://thienloipc.com/leonarderman/hd4800bios/Powercolor.HD4850.512.0004.bin) and making it so 3d clocks = 1.2v 700/1000

have you tried using powerplay settings 160/500 in 2d? or is that a bit complicated

cheers :welcome:

[gurusan]

Here is your Bios: Power Color (http://thienloipc.com/leonarderman/hd4800bios/Powercolor.HD4850.512.0004.bin)

I have changed Core upper limit to 1250MHz and memory upper limit 1450MHz
And I don't change anything else!

Good luck! ;)

All of these bioses say invalid bios image when I try to flash with atiflash?

[Mysterfix]

All of these bioses say invalid bios image when I try to flash with atiflash?

Have you tried renamimg the files to .rom instead .bin?

[gurusan]

just tried that and no worky.

Also just tried using winflash and it says vbios not found.

leonarderman are you sure you got the checksums right?

[Mysterfix]

It works for me on vista 64, are you using XP, because if you are you have to change the file extension so it shows up as a rom file and not a bin file.

[MadMikeSS]

I was able to flash his bios' no problem, but the one problem I have run into so far is that if I try to install the CAT 8.8 betas it won't recognize my card as a valid ATI card. The CAT 8.7's work fine though and didn't give me a problem. Which is why I'd like to have my own card's bios modded just slightly without messing with the checksums.

[MadMikeSS]

just tried that and no worky.

Also just tried using winflash and it says vbios not found.

leonarderman are you sure you got the checksums right?

Have you tried atiflash from dos with -p -f 0 [bios.bin]?

[gurusan]

Have you tried atiflash from dos with -p -f 0 [bios.bin]?

yeah that was it, i just had to force it. :/

thanks

[MadMikeSS]

Cool, good that that worked out. Hope you don't run into the driver issues like I have.

[regenade]

Same issue with catalyst 8.8 beta in my XP install....the catalyst 8.7 on my Vista worked fine :(
Its like a similar issue with 8.7 beta where modded bios didn't work...any ideas guys?

[Mysterfix]

Well I tried both the asus and the powercolor but neither one are working with my cards. After I reboot I get no signal from either card with these bios. Had to go back to my original, the saphire one's work but I couldn't change any of the overdrive settings for some reason. Anybody else having this problem?

Edit: I've got a Diamond and a Powercolor

[H3llSp4wN]

hello.

when i flash my gigabyte card with the powercolor bios, it sais that doesn't recognizes it. :confused:

can anybody please change the CCC limits on my gigabyte bios file?

Here it is -> http://rapidshare.com/files/135135628/gigabyte4850.rom.html

Sorry for my bad english.


thank's

[awdrifter]

dont even think about it :)

Does anyone have a modded Asus 4850 bios then?

[leonarderman]

Does anyone have a modded Asus 4850 bios then?


Here is your Bios: :D

3. Asus HD4850 Light Overclocked. DF Core 700MHz Mem 1100MHz Auto Cool Fan.
GPU Core upper Limit 1200MHz
Memory Upper limit 1400MHz
Vcore DF 1.12V no modded

Asus HD4850 Light Overclocked (http://thienloipc.com/leonarderman/hd4800bios/ASUS.4850.PCIe.512MB.Rev.01.bin)

[leonarderman]

hello.

when i flash my gigabyte card with the powercolor bios, it sais that doesn't recognizes it. :confused:

can anybody please change the CCC limits on my gigabyte bios file?

Here it is -> http://rapidshare.com/files/135135628/gigabyte4850.rom.html

Sorry for my bad english.


thank's


Your Gigabyte HD4850 Bios here: Gigabyte HD4850 Bios Modded (http://thienloipc.com/leonarderman/hd4800bios/gigahd4850.bin)

Core upper Limit 950MHz
Memory Upper limit 1400Mhz

Please update with Atiflash 3.6 or newer (Dos)

Try to Done! :rolleyes:

[ken]

Here is your Bios: :D

3. Asus HD4850 Light Overclocked. DF Core 700MHz Mem 1100MHz Auto Cool Fan.
GPU Core upper Limit 1200MHz
Memory Upper limit 1400MHz
Vcore DF 1.12V no modded

Asus HD4850 Light Overclocked (http://thienloipc.com/leonarderman/hd4800bios/ASUS.4850.PCIe.512MB.Rev.01.bin)

can you do this with the vmod applied? my card needs more than the default voltage to get 700Mhz stable :p

[leonarderman]

can you do this with the vmod applied? my card needs more than the default voltage to get 700Mhz stable :p

With the Bios default:
Idle: 1.12V
Fulload: 1.263V

Bios Modded able to change Vcore max to 1.327V. Mod more Volt take no effect!

But I think the card HD4850 is easy stable at core 700Mhz with vcore df. With my Sapphire HD4850, I can overclock core to 750Mhz stable easily! Try again or mod Vcore by Pencil to get more result! ;)

[ken]

With the Bios default:
Idle: 1.12V
Fulload: 1.263V

Bios Modded able to change Vcore max to 1.327V. Mod more Volt take no effect!

But I think the card HD4850 is easy stable at core 700Mhz with vcore df. With my Sapphire HD4850, I can overclock core to 750Mhz stable easily! Try again or mod Vcore by Pencil to get more result! ;)

now im confused :p Does it bios come with the soft-vmod applied (to get around 1.2v underload) or not? the default voltage for the HD4850 is around 1.13v underload :)

p/s: nevermind, I opened the bios file in RBE, it seems that soft-vmod is not applied then :)

[MadMikeSS]

With the Bios default:
Idle: 1.12V
Fulload: 1.263V

Bios Modded able to change Vcore max to 1.327V. Mod more Volt take no effect!

But I think the card HD4850 is easy stable at core 700Mhz with vcore df. With my Sapphire HD4850, I can overclock core to 750Mhz stable easily! Try again or mod Vcore by Pencil to get more result! ;)

leonarderman, do you think you could mod my HIS bios? I have it linked in a post at the beginning of page 2.
Thanks.

[Mysterfix]

Can you mod my original bios and change only the upper limits please? DiamondHD4850.bin (http://www.techpowerup.com/vgabios/16973/Diamond.HD4850.512.080523.bin) :up:

[drizzt5]

Here is your Bios: :D

3. Asus HD4850 Light Overclocked. DF Core 700MHz Mem 1100MHz Auto Cool Fan.
GPU Core upper Limit 1200MHz
Memory Upper limit 1400MHz
Vcore DF 1.12V no modded

Asus HD4850 Light Overclocked (http://thienloipc.com/leonarderman/hd4800bios/ASUS.4850.PCIe.512MB.Rev.01.bin)


With the Bios default:
Idle: 1.12V
Fulload: 1.263V

Bios Modded able to change Vcore max to 1.327V. Mod more Volt take no effect!

But I think the card HD4850 is easy stable at core 700Mhz with vcore df. With my Sapphire HD4850, I can overclock core to 750Mhz stable easily! Try again or mod Vcore by Pencil to get more result! ;)
So wait... If I flash my asus 4850 with this. It will be default clocks of 700/1100, but it will have a vcore max of 1.327v's? Meaning I could quite possibly with the proper cooling get it to 800 core? :/

[Mysterfix]

So wait... If I flash my asus 4850 with this. It will be default clocks of 700/1100, but it will have a vcore max of 1.327v's? Meaning I could quite possibly with the proper cooling get it to 800 core? :/

Yes, if the voltage is able to go up to the max of 1.327v set in bios then you could get the core upto around 850mhz.

[drizzt5]

With just a bios flash.... wow....

Now I really really need to read up on it. Do I need a multimeter for a bios flash like I need for a pencil mod or volt mod? Because I don't have one on hand.

[Mysterfix]

To be honest I don't know if the 1.327v bios mod actually works, my cards are hard modded so you'll have to waite for Leonarderman to chime in.

[drizzt5]

Oh, it kind of sounds too easy to be true :/

[awdrifter]

Here is your Bios: :D

3. Asus HD4850 Light Overclocked. DF Core 700MHz Mem 1100MHz Auto Cool Fan.
GPU Core upper Limit 1200MHz
Memory Upper limit 1400MHz
Vcore DF 1.12V no modded

Asus HD4850 Light Overclocked (http://thienloipc.com/leonarderman/hd4800bios/ASUS.4850.PCIe.512MB.Rev.01.bin)

Thank you, the card should be here tonight, I will definitely try it out. :up:

[ken]

So wait... If I flash my asus 4850 with this. It will be default clocks of 700/1100, but it will have a vcore max of 1.327v's? Meaning I could quite possibly with the proper cooling get it to 800 core? :/

nah, you would get around 1.2v at best. anything higher than that would need pencil/hardmod.

my Asus HD4850 needs around 1.28v to do 800MHz stable btw :)

[drizzt5]

oh, so is it not worth doing a bios mod?

[ken]

oh, so is it not worth doing a bios mod?

it still worth it if you want the higher limit in the CCC Overdrive and little extra voltage (1.13v => 1.2v-ish) for overclocking. Im not sure if the one from leonarderman already has the soft-mod done though :p

[drizzt5]

Ok, what I will do is OC as high as I can with no mod's. I need to be told how to do the rest of this stuff afterwards though :P
http://www.xtremesystems.org/forums/showthread.php?p=3195868#post3195868
Could you help me out please?

[leonarderman]

Please note: Don't try to use Pencil mod if you don't have a better cooler (Water cooling is best for use). Because pencil mod can give vcore 1,4V - it'll make your HD4850 card too hot. I tried with my Sapphire HD4850 Toxic + Zalman VF900, it's so hot that I can't Overclock GPU core more than 815MHz.



leonarderman, do you think you could mod my HIS bios? I have it linked in a post at the beginning of page 2.
Thanks.

Here's your HIS HD4850 Bios file: HIS HD4850 Bios Modded (http://thienloipc.com/leonarderman/hd4800bios/HIS4850biosmodded.bin)
Core Upper limit 800MHz
Mem upper limit 1300MHz


Can you mod my original bios and change only the upper limits please? DiamondHD4850.bin

Here's your Diamond HD4850 Bios file: HIS HD4850 Bios Modded (http://thienloipc.com/leonarderman/hd4800bios/Diamond.HD4850modded.bin)
Core Upper limit 950MHz
Mem upper limit 1400MHz

[Mysterfix]

Thanks bro.

[leonarderman]

You should create an USB Bootable to Dos. You can make it from the guide here:

http://www.thepcspy.com/read/bootable_usb_flash_drive

Then you have to copy ATIFlash programs 3.6 (download below) or newer (Dos) and Bios file to USB Disk. Try it done! :D

http://www.techpowerup.com/downloads/1123/ATIFlash_3.60.html


Please note: Updating by ATIFlash 3.6 or newer (Dos), don't try to use ATI WinFlash, because I found the problem from bios file maked by RBE1.12 - ATI Winflash can't open bios file maked by RBE1.12! :)

[MadMikeSS]

Here's your HIS HD4850 Bios file: HIS HD4850 Bios Modded (http://thienloipc.com/leonarderman/hd4800bios/HIS4850biosmodded.bin)
Core Upper limit 800MHz
Mem upper limit 1300MHz

Thanks bud, you are the man.

[BulldogPO]

Please, do one for MSI HD4850 also :)

[Factotum]

leonarderman
May be You can write "How to" with pictures for All, pls

[Factotum]

yes, i'm do it. I convert in calcularor 70000 (Dec)-> 11170 (Hex)
open bios in winhex end find hex value 701101 - i'm find a value
edit 701101 (700MHz) -> 187301 (950MHz), check checksum and save bios
RBE say what clock upper limit set to 950MHz :rehab: :rehab: :rehab:
i'm flashing the bios nice, but catalist 8.8 don'd work with bios :down:

[leonarderman]

yes, i'm do it. I convert in calcularor 70000 (Dec)-> 11170 (Hex)
open bios in winhex end find hex value 701101 - i'm find a value
edit 701101 (700MHz) -> 187301 (950MHz), check checksum and save bios
RBE say what clock upper limit set to 950MHz :rehab: :rehab: :rehab:
i'm flashing the bios nice, but catalist 8.8 don'd work with bios :down:


Yes! Catalyst 8.8 can't Overclock card with ATI Overdrive, you should OC with AMD GPU Tool. :D

[STEvil]

Why so many different limits and versions?

Just open them up to a high value (1200 core+) but leave the volts/clocks at default.

[leonarderman]

Please, do one for MSI HD4850 also :)

Your MSI Bios modded here (http://thienloipc.com/leonarderman/hd4800bios/MSI.HD4850modded.bin)

Core upper limit 950Mhz
Mem upper limit 1400MHz

And I don't change anything else! :D



@ STEvil : do you thing you can overclock GPU HD4800 more than 1200MHz? The WR is 1050MHz with hard modded! I thing 950Mhz are enough! :D

[Factotum]

Yes! Catalyst 8.8 can't Overclock card with ATI Overdrive, you should OC with AMD GPU Tool. :DCatalist 8.7:
http://images.people.overclockers.ru/preview/162441.jpg

[drizzt5]

I think my S1 + 120mm fan should be enough to get me a decent overclock.

[STEvil]

Your MSI Bios modded here (http://thienloipc.com/leonarderman/hd4800bios/MSI.HD4850modded.bin)

Core upper limit 950Mhz
Mem upper limit 1400MHz

And I don't change anything else! :D



@ STEvil : do you thing you can overclock GPU HD4800 more than 1200MHz? The WR is 1050MHz with hard modded! I thing 950Mhz are enough! :D

If the WR is 1050 then 950 is not enough.

Edit - and i'm sure i've seen some at 1100.

[stingush]

can some1 link me to the pencil mod?

[leonarderman]

can some1 link me to the pencil mod?

It can be found here!
http://www.techpowerup.com/articles/overclocking/voltmods/151

@ STEvil: That's so good! Try to top WR. Good luck! :D

I could just overclock my to 815MHz with pencil Vcore modded. The card is so hot that I couldnot overclock more than that! Here is my result 3DMark Vantage Performace.


http://thienloipc.com/leonarderman/sapphire_hd4850_toxic/test/3kvantageoc3.jpg

[drizzt5]

Thanks man, you used your bios mod + your pencil mod right?

[stingush]

looks very good, think i'll use it next week :D

[Factotum]

to leonarderman
what value you are looking for editing core voltage limit in bios?
1158 max voltage in bios, if it up - protection kick voltage. I want find value for protection

[jdrom]

I just figured out how to do this myself. Not overly difficult but it took CanadaRox and I a bit to figure the number conversion.

Basically you take the decimal number you want, multiply it by 100 then convert it to hexadecimal. You then invert the hex and then enter it into the BIOS using a hex editor. I use UltraEdit myself.

Example:
1000MHz = 100000
100000 = 01 86 A0 (Hex)
Invert = A0 86 01
So you'd enter in A0 86 01 to get a 1000MHz limit.

To find the limit in the BIOS, you'd have to convert the limit to "inverted" hex and then search for it.

RBE shows the limit as being correctly increased but I've yet to flash the BIOS.

I did this to my HD4850 BIOS though the same principles apply to the HD4870 as well which CanadaRox has.

EDIT: Well I got 1000/1400 limits seemingly working, however CanadaRox is having problems with his HD4870. The core limit seemed to work but the memory appears to be an issue.
http://i85.photobucket.com/albums/k71/jdrom17/ccc-limit-raised.png

[HousERaT]

Can someone with the skills put out a generic 4850 bios with high CCC limits (1200/1400) which also has a proper checksum?

[chri5g]

leonarderman did NOT do checksum
Only WHQL driver work next 8.8 beta DID NOT work

[Factotum]

I moded Sapphire HD4850 bios:
1. Upper limit GPU set to 950MHz
2. moded powerplay: in 3D set 1.158=1.21V (monitoring) - it's max value for Vgpu in bios. If value more than 1.158 - overprotection kick voltage to 1.1V in monitoring :(
http://images.people.overclockers.ru/162710.gif
3. fix a bios checksum. original bios (http://www.techpowerup.com/vgabios/16834/Sapphire.HD4850.512.080602.html)
get it here (http://cp.people.overclockers.ru/cgi-bin/dl.pl?id=28956&filename=4850new_mod.rom)
My bios work great with Catalist 8.7 in Windows XP and Vista x64, and don't work with catalist 8.8beta
Enjoy

[awdrifter]

Thank you, the card should be here tonight, I will definitely try it out. :up:

I tried to flash the modded bios with Atiwinflash, but it gives me an error saying "VBIOS image not found" Anyone else have this problem? TIA.

[Mysterfix]

I tried to flash the modded bios with Atiwinflash, but it gives me an error saying "VBIOS image not found" Anyone else have this problem? TIA.

Try renaming the file to something shorter like 4850.rom.

[leonarderman]

leonarderman did NOT do checksum
Only WHQL driver work next 8.8 beta DID NOT work

I'm sorry! I forgot to do it! I'll it it later. Now I'm very busy.

[leonarderman]

I tried to flash the modded bios with Atiwinflash, but it gives me an error saying "VBIOS image not found" Anyone else have this problem? TIA.


Please note: I found the problem in ATI WinFlash with bios file maked by RBE1.12. Don't use ATI Winflash, please using ATIFlash 3.6 or newer (Dos)

[awdrifter]

Ok, I will give that a try, thanks.

Edit: Just noticed that ATIflash is on dos, I think I'm going to wait for ATI Tools or ATI Tray Tools to support this card, last time I flashed a bios using floppy disk it ididn't end well. Did anyone tried the renaming trick with ATIwinflash? Did that work? But then I'm at 700/1100 with CCC Overdrive and fan mod, so I'm ok for now.

w00t, post 777!

[HKPolice]

I moded Sapphire HD4850 bios:
1. Upper limit GPU set to 950MHz
2. moded powerplay: in 3D set 1.158=1.21V (monitoring) - it's max value for Vgpu in bios. If value more than 1.158 - overprotection kick voltage to 1.1V in monitoring :(
3. fix a bios checksum. original bios (http://www.techpowerup.com/vgabios/16834/Sapphire.HD4850.512.080602.html)
get it here (http://cp.people.overclockers.ru/cgi-bin/dl.pl?id=28943&filename=4850new_mod.rom) or here (http://rapidshare.com/files/135877480/4850new_mod.rom)
My bios work great with Catalist 8.7 in Windows XP and Vista x64, and don't work with catalist 8.8beta
Enjoy

This works GREAT for my gigabyte 4850! I could only get 750mhz ATiTool stable /w Accelero S1 though :(

Is that normal for this voltage and high end air? It full loads at only 46C.

[Factotum]

stable /w Accelero
Is that normal for this voltage and high end air? It full loads at only 46CYes. I have S1+Noctua P12-1300 with voltmod 1.33V and 825MHz for GPU - full stable, max 60C

[stingush]

This works GREAT for my gigabyte 4850! I could only get 750mhz ATiTool stable /w Accelero S1 though :(

Is that normal for this voltage and high end air? It full loads at only 46C.

i'm also working with this bios and it works great but i get only idle 1.05V and 1.16V at load...
is there any soft-modded way to get more than that on the VGPU?

[HKPolice]

Actually after more usage, it's no longer idling at 160Mhz 2D mode, it's back to 500Mhz for some reason even when I'm not doing UVD decoding. Any idea? Driver bug or what? I'm using the newest 8.7 Cats.

[Factotum]

i'm also working with this bios and it works great but i get only idle 1.05V and 1.16V at load...
is there any soft-modded way to get more than that on the VGPU?kick ccc.exe in Task Manager and DElit all profiles: c:\Documents and Settings\<USER>\Local Settings\Application Data\ATI\
or push "Defaults" in ATI Overdrive

[Factotum]

Actually after more usage, it's no longer idling at 160Mhz 2D mode, it's back to 500Mhz for some reason even when I'm not doing UVD decoding. Any idea? Driver bug or what? I'm using the newest 8.7 Cats.see up, i have 160MHz in 2D

[HKPolice]

see up, i have 160MHz in 2D

Yes, I see 160Mhz after my first reboot of freshly installed drivers. But if I reboot again, it goes back to 500Mhz!!

[HKPolice]

Ok I've figured it out. If you overclock too much and VPU recovery kicks in, it changes your CCC profile so that 2D clock gets switched to the 'medium' 500Mhz setting and your 3D voltage is also LOWERED by about 0.02v.

I was at around 1.17v with this bios in 3D before, after VPU recover + 500Mhz 2D switch, it dropped down to 1.15v.

Always delete the CCC profile files after a VPU recovery!!!

Stupid ATi drivers :down:

[drizzt5]

I'm so happy it worked
http://img.photobucket.com/albums/v521/jazzarmando/BIOSFLASH.jpg
ty :P

[BAGZZlash]

RBE v1.13 (http://www.techpowerup.com/downloads/Utilities/RBE/) is out now!

It has not many, but powerful new features.
From the changelog:

v1.13
- Added the checksum calculation method WinFlash uses because for some files, the checksums differ. See built-in-FAQ for more on this.
- Improved checksum balancing algorithm to capture this. This is a completely new method, so there might be some minor bugs, but it is guaranteed to not corrupt any file. Notify me on any strange behaviour.
- Added one-click update functionality for some 48x0 cards which corrects a well known "spin-up bug" and improves powerplay (power saving functionality).
- Added method for overdrive limit increasing. Still experimental, read built-in help text before using this. Power users only!
- Fixed bug with not properly displayed overdrive limits.

Have fun and please give me some feedback! :)

[Factotum]

update my bios (http://www.xtremesystems.org/forums/showpost.php?p=3201916&postcount=81) pls
fix powerplay (THX for RBE1.13, but For all Fix use HEX by me)

[HousERaT]

I moded Sapphire HD4850 bios:
1. Upper limit GPU set to 950MHz
2. moded powerplay: in 3D set 1.158=1.21V (monitoring) - it's max value for Vgpu in bios. If value more than 1.158 - overprotection kick voltage to 1.1V in monitoring :(

Enjoy
Bios tested & works great, I flashed it with atiflash in windows. Now all I need is a Overdrive limit 1200/1400 version modded just like your first one. :D

[Mysterfix]

update my bios (http://http://www.xtremesystems.org/forums/showpost.php?p=3201916&postcount=81) pls
fix powerplay (THX for RBE1.13, but For all Fix use HEX by me)

Link doesn't work. :down:

[HousERaT]

Link doesn't work. :down:
it just goes to the earlier post in this thread.

www.xtremesystems.org/forums/showpost.php?p=3201916&postcount=81

[Mysterfix]

Ohh, thanks.

[drizzt5]

Does flashing to the asus bios actually LOWER the voltage? Because I can't clock as high now by a few mhz. I'm going to pencil mod soon.

[drizzt5]

ya, flashing my asus bios lowerd my voltages. I guess it's fine though as it unlocked higher clocks.

Yo, OP, do you have an asus bios that DOESN'T lower stock voltages? Cause I need one.

[zicada]

This BIOS has correct checksum (works in beta 8.8) and upperlimit is set to 720mhz instead of 700.
The BIOS version is also newer than all the others i've seen

http://www.techpowerup.com/vgabios/20128/Powercolor.HD4850.512.080807.html

Edit it in RBE 1.3 and set 1.158v (max) on 3d, and you're in good shape. Also make sure you update the fan-settings, as the current ones in this version are bugged (stays at 30%).

If anyone has any BIOS'es with a higher upper limit and correct checksum, please let me know.

[LagunaX]

Leonarderman - do you have a visiontek lightly overclocked hd4850 bios?

Are these bios preconfigured with higher fan settings too for a lower idle and load?

Thanks.

[ANP !!!]

Can I use some other's (ie Sapphire/Asus, etc) Bios on my Gecube 4850 ? I havent recieved the card yet. Where can I find a Gecube stock bios ??

I have WC and willing to use 1.4v with 850/1100, Lets hope it turns out good.

[shimmishim]

i'd like to request one for the visiontek hd 4850 as well

here is the original bios in a zip file. you'll have to unzip it first.

[BeastNotro]

Is there a HIS 4850 Bios?

[leonarderman]

Is there a HIS 4850 Bios?


Here's your HIS HD4850 Bios file: HIS HD4850 Bios Modded (http://thienloipc.com/leonarderman/hd4800bios/HIS4850biosmodded.bin)
Core Upper limit 800MHz
Mem upper limit 1300MHz
And don't change anything! :rolleyes:




Can I use some other's (ie Sapphire/Asus, etc) Bios on my Gecube 4850 ? I havent recieved the card yet. Where can I find a Gecube stock bios ??

I have WC and willing to use 1.4v with 850/1100, Lets hope it turns out good.


Yes, you can use sapphire/Asus's HD4850 Bios because they're the same. You can find your stock Bios below. Let's modify it with RBE1.13 :D
http://www.techpowerup.com/vgabios/17001/GeCube.HD4850.512.080602.html




Leonarderman - do you have a visiontek lightly overclocked hd4850 bios?

Are these bios preconfigured with higher fan settings too for a lower idle and load?


Your Bios below attachment.
Default Core 675MHz / Mem 1050MHz
Upper limit core 950MHz / Mem 1250MHz
Fan auto cool 50oC---Fan40% ====> max 95oC----Fan100%
Bios checksum corrected! ;)

[shimmishim]

Here's your HIS HD4850 Bios file: HIS HD4850 Bios Modded (http://thienloipc.com/leonarderman/hd4800bios/HIS4850biosmodded.bin)
Core Upper limit 800MHz
Mem upper limit 1300MHz
And don't change anything! :rolleyes:






Yes, you can use sapphire/Asus's HD4850 Bios because they're the same. You can find your stock Bios below. Let's modify it with RBE1.13 :D
http://www.techpowerup.com/vgabios/17001/GeCube.HD4850.512.080602.html






Your Bios below attachment.
Default Core 675MHz / Mem 1050MHz
Upper limit core 950MHz / Mem 1250MHz
Fan auto cool 50oC---Fan40% ====> max 95oC----Fan100%
Bios checksum corrected! ;)


Thanks a ton!

Can you change the core limit a bit higher to say... 1100 or so?

For subzero benching purposes of course! :)

[leonarderman]

Thanks a ton!

Can you change the core limit a bit higher to say... 1100 or so?

For subzero benching purposes of course! :)



Changing the core limit higher 1100MHz is easy but I think it's not needed. Before I used Hex Editor to change Core/mem upper limit, but now You can use RBE 1.13 to change it. If you want a higher Core limit, think You should do it with RBE 1.13! Well done! :D

[LagunaX]

Thanks leonarderman for the visiontek bios - but quick question - why is it 675/1050 while the other "lightly clocked" versions are 700/1100?

Is it that the visiontek can't handle it? I bought a preflashed visiontek 4850 off of ebay for a decent price (used) set at 725/1100 but under 3dmark06 and Vantage appears unstable since it pauses/jumps. Do you think 700/1100 would be ok?

[leonarderman]

Thanks leonarderman for the visiontek bios - but quick question - why is it 675/1050 while the other "lightly clocked" versions are 700/1100?

Is it that the visiontek can't handle it? I bought a preflashed visiontek 4850 off of ebay for a decent price (used) set at 725/1100 but under 3dmark06 and Vantage appears unstable since it pauses/jumps. Do you think 700/1100 would be ok?


Someone sent to me a problem with Bios Sapphire Lightly Overclocked Core 700/1100MHz. I have tested with my card and didn't see any problem. But They say it make their card unstable! :( So I think 675/1050Mhz are enough to use. You can Overclock higher with CCC + AMD GPU Tool.


Please note: combining CCC + AMD GPU Tool to be best Performance of Overclocking! :D

[Caped Crusader]

Ok I've figured it out. If you overclock too much and VPU recovery kicks in, it changes your CCC profile so that 2D clock gets switched to the 'medium' 500Mhz setting and your 3D voltage is also LOWERED by about 0.02v.

I was at around 1.17v with this bios in 3D before, after VPU recover + 500Mhz 2D switch, it dropped down to 1.15v.

Always delete the CCC profile files after a VPU recovery!!!

Stupid ATi drivers :down:

Hey, this happened to me yesterday! I was playing Space Siege with 730/1100Mhz just fine, then I went to play some other game (I think it was GRID...) and bang! VPU recovery error and tray notification!
After that, I couldn't play any other game (even Space Siege which was runnning fine) with that OC... I had to go back to 700 core or something like that. The 2D clocks also changed from 160/500 to 160/750 which was odd...

Then I remembered this thread and saw your post. I went and delete the profiles folder and I have everything ok again.
Is there any way to go around and prevent this protection from kicking in? I don't want to use a fixed BIOS (been there).

Thanks :)

[shimmishim]

Actually RBE 1.13 doesn't allow you to change the limits according to the creator of RBE. He said 1.13 will be the shortest lived version. He will have a 1.14 out very soon.

[Caped Crusader]

Actually RBE 1.13 doesn't allow you to change the limits according to the creator of RBE. He said 1.13 will be the shortest lived version. He will have a 1.14 out very soon.

Okidoki :)

Anyone knows if the new version will let us change ONLY the UPPER LIMIT GPU without modifying the actual core frequency? So we can OC with CCC safely...

Thanks

[leonarderman]

Actually RBE 1.13 doesn't allow you to change the limits according to the creator of RBE. He said 1.13 will be the shortest lived version. He will have a 1.14 out very soon.



Oh yeah! I saw the problem in RBE1.13 :shrug:

I Hope RBE1.14 will be out soon! :rolleyes:

[Caped Crusader]

I moded Sapphire HD4850 bios:
1. Upper limit GPU set to 950MHz
2. moded powerplay: in 3D set 1.158=1.21V (monitoring) - it's max value for Vgpu in bios. If value more than 1.158 - overprotection kick voltage to 1.1V in monitoring :(
http://images.people.overclockers.ru/162710.gif
3. fix a bios checksum. original bios (http://www.techpowerup.com/vgabios/16834/Sapphire.HD4850.512.080602.html)
get it here (http://cp.people.overclockers.ru/cgi-bin/dl.pl?id=28956&filename=4850new_mod.rom)
My bios work great with Catalist 8.7 in Windows XP and Vista x64, and don't work with catalist 8.8beta
Enjoy

Factotum, I'm using this modded BIOS you posted with my card right now... will it work with Catalyst 8.8 or will I get a black screen?

Also, can anyone provide me with a reference Sapphire BIOS with JUST the core upper limit raised to 800 that can work with Cat. 8.8?

Thanks in advance :D

BTW, I swapped my cards stock cooler for this:

http://www.monocromatica.com/fez/ATI/DSCF9027.JPG

Do you guys think it will let me achieve higher OC with a slight pencil mod?

[LagunaX]

Actually tried my ebay bios modded visiontek hd4850 on another motherboard. Stable no artifacts 3dmark06 and Vantage. Bios set 725/1125. Fan set to idle mid 50's and not get past 65 load. Works with CCC 8.7, haven't tried 8.8.
For you guys to play with if you want.

Custom hd4850 bios 725/1125 fan 55-65 c.
http://rapidshare.com/files/139289043/RV770.bin

[BAGZZlash]

RBE v1.14 (http://www.techpowerup.com/downloads/Utilities/RBE/) is available now!

Here are the new things:

v1.14
- Fixed bug with method one overdrive hack not working. Should run fine now.
- Added fan control for 4870 X2. Completely new controller chip, was a big pain in the ass to code... :-/
- Made spin up fix, powerplay functionality and voltage decrease in the one-click update for 4xx0 cards seperately selectable.
- Fixed WinFlash check sum correction bug.
- Added and fixed a lot of small things. Too many and too minor to mention all... :-)

Please tell me your opinion about everything! :)

[LagunaX]

Actually tried my ebay bios modded visiontek hd4850 on another motherboard. Stable no artifacts 3dmark06 and Vantage. Bios set 725/1125. Fan set to idle mid 50's and not get past 65 load. Works with CCC 8.7, haven't tried 8.8.
For you guys to play with if you want.

Custom hd4850 bios 725/1125 fan 55-65 c.
http://rapidshare.com/files/139289043/RV770.bin

Here is the .rom file if you prefer to use winflash - worked fine for me.

http://rapidshare.com/files/139312923/4850new.rom

[AliG]

is that saphire the reference model? If it is, none of you guys that have a stock 4850 need a different bios because of the pcb is the same

[regenade]

Thanks BAGZZlash for the 1.14 quite fast :)
Why is the HD 4850 limited to only 720 Mhz (with the method 1-Hash)...at least 750Mhz or so would have been nice :(

[AliG]

honestly, it should have been 740mhz, that way ati could have protected the 4870's market but please customers, my guess is the stock cooler couldn't handle above 700mhz very well and then they'd be replacing a lot of parts due to their CCC ocing policy

[dark2099]

leonarderman, would it be safe for me to use RBE to up the voltages for your modified Visiontek 4850, and apply the fan spin up fix? If not could you please do that? Thanks.

[LagunaX]

Will these custom bios' work with CCC 8.8? I noticed that the one i have will not.

[The Nemesis]

Your Bios below attachment.
Default Core 675MHz / Mem 1050MHz
Upper limit core 950MHz / Mem 1250MHz
Fan auto cool 50oC---Fan40% ====> max 95oC----Fan100%
Bios checksum corrected! ;)

Using this bios enabled my GPU's to be clocked beyond 700MHz in CCC but gpu-z always shows 675-1050 as my clocks. I know its not because the benchmarks are all scoring higher any ideas? Using CCC 8.8 & 8.7 Display Driver GPU-Z 0.2.6 & 0.2.7

[leonarderman]

Using this bios enabled my GPU's to be clocked beyond 700MHz in CCC but gpu-z always shows 675-1050 as my clocks. I know its not because the benchmarks are all scoring higher any ideas? Using CCC 8.8 & 8.7 Display Driver GPU-Z 0.2.6 & 0.2.7


Can U give me some pics? :confused:

[regenade]

No modded bios is working with the Catalyst 8-52 and Catalyst 8.8...any idea if the CCC limit can be increased by using the signature of this Gainward Golden Sample HD 4850 bios :)

http://www.techpowerup.com/vgabios/20636/Gainward.HD4850.512.080806.html

A limit of 750Mhz on the core makes a lot of sense as most of the cores can do arnd that much only without any hard mods :)

[secure]

No modded bios is working with the Catalyst 8-52 and Catalyst 8.8...any idea if the CCC limit can be increased by using the signature of this Gainward Golden Sample HD 4850 bios :)

http://www.techpowerup.com/vgabios/20636/Gainward.HD4850.512.080806.html

A limit of 750Mhz on the core makes a lot of sense as most of the cores can do arnd that much only without any hard mods :)

yes, this is very well possible, according to the "F.A.Q" in rbe 1.14 the author has written that the signatures that are signed by ati are used to increase the ccc clock limits, so that it works properly with the drivers.


"Urgent information on overdrive increase

What is this all about? Maybe you tried overclocking your card using overdrive and found yourself running into the upper limit there. ATI implements this limit into their cards to assure the video card vendors don't overclock their chips too much. They just want to have an overview over the market and maybe, want to participate in the more expensive OC edition cards. Thus, the video card vendors make a video card, create a BIOS for it and send this BIOS to ATI. ATI approves the BIOS (or not), adds a signature to it and sends it back to the vendor. Only then the vendor can produce and ship the card, this is not possible without that signature. The signature mentioned is an encrypted key. The overdrive limit in the BIOS is protected by this key. It can be changed, but if so, the key won't match any more which makes the catalyst driver not recognize the card any more and therefore, this BIOS is unusable. RBE can't decrypt this key, but it can transplant an overdrive limit and its key to another BIOS.
Even though this is an attractive method, it has some disadvantages:
1) There must be BIOSes with increased limits and matching signatures. So far, RBE's author is not familiar with so many such BIOSes.
2) The area that needs to be put into the BIOS contains the deviceID, also. If you are keen enough to put a HD 4850 hash into a 3870 BIOS for example (not recommended, though), be prepared for strange things to happen: Programs that make decisions out of a card's deviceID (just like RBE for example) will be fooled then, of course. Maybe you will have to install the matching catalyst for the new card (in this case, the one for the 4850) after flashing and rebooting. But of course, the 3870 is still a 3870, not supporting many things the 4850-catalyst expects to work. Please try not to mix up video card types, at least not among the video card generations (like 3xx0 and 4xx0 for example). The key matching your card best will be suggested by RBE automatically.

__________________________________________________ _____________________________________

As you can see, there are two methods offered. The first one takes all the stuff described above into account. It's the safer variant, but only available for several video cards. If you can select 'method 1' and 'change to these values', your card is supported. The second method won't take care of the signature described. It will simply change the (protected) overdrive clocks to the values entered. While this can be done to almost any video card, keep in mind that the key won't match any more after changing the limit that way. Some card/Catalyst combination might work however, at least there are reports on the internet that they do. Just try if it works for you if method one is not available for you."

So we need to either report to the author, or we try and manually implement this key by our self. So yes it is very possible :D

[ANP !!!]

Hey mate, can you edit my Bios to a upperlimit of 1100/1300 and a clock of 160/500 with low voltage for low power consumption under Idle (Powerplay)

Here is the link to my Bios
http://www.techpowerup.com/vgabios/17001/GeCube.HD4850.512.080602.html

I have Catalyst 8.8, will I need to roll back my Driver to older version to Flash the bios ?

Thanks a lot.

[LagunaX]

No modded bios is working with the Catalyst 8-52 and Catalyst 8.8...any idea if the CCC limit can be increased by using the signature of this Gainward Golden Sample HD 4850 bios :)

http://www.techpowerup.com/vgabios/20636/Gainward.HD4850.512.080806.html

A limit of 750Mhz on the core makes a lot of sense as most of the cores can do arnd that much only without any hard mods :)

How are the fan profiles on this one?
If it doesn't get too hot idle/load with a regular hd 4850 cooler I might give it a flash try if it will work with CCC 8.8.

[regenade]

The problem is with the RAM sub-timings as the Gainward card uses Samsung 0.8ns DDR3 . I got a few red dots here nd there at boot up after flashing to this bios. Went back to the powercolor one with 720Mhz limit :)

[MagnumMan]

I have 4x 3870 water cooled and voltmodded to 1.675V. I pulled down a newer BIOS from Techpowerup, 010.081.001.000 and proceeded to modify it with RBE 1.14. I did touch the custom clocks page. I also selected "Method 1" from the other clock page, and RBE said I would be able to go up to 1100 GPU speed in overdrive, but my max there is 900MHz.

Also in Catalyst 8.6 I can do Quad CrossfireX, in 8.7 and 8.8 I cannot do anything more than 2-way Crossfire, with the same hardware. Anybody else having this issue?

I have attached the BIOS I am using. Any help getting themax clock up past 900 would be great. I have set some of the voltages in the clocks panel to keep the idle voltage at 1.4V and the load voltage at 1.675V with the voltmod I have on each card. I want to set the system to 1000MHz GPU and 1271MHz memory on the 4x video cards just like I was able to with the older 010.071.000.000 BIOS that was posted early this year to get past the 862MHz GPU speed limiter.

http://www.hydrabolt.com/

[angelreaper]

Hi leonarderman.

Can please change the limits on my Palit 4850 bios file:
http://rapidshare.com/files/144920646/RV770.bin.html
Thanks in advance.

Regards

[RejZoR]

Don't use that HP Utility. It :banana::banana::banana::banana:ed up my Patriot XporterXT drive.

[BAGZZlash]

RBE v1.15 (http://www.techpowerup.com/downloads/Utilities/RBE/) is ready for download!

That's the changes:

v1.15
- Fixed bug causing an error message on loading several BIOSes (small ones like several 3870 X2 BIOSes).
- Added remote control feature for WinFlash to acquire and flash BIOSes from within RBE. Will be included in the tutorial soon.
- Superior PowerPlay should be available for more 4870 BIOSes now.
- Added link to the tutorial in the menu bar. (Info... Tutorial on how to use RBE (websource)...)
- Added display for the card's internal voltage table (it's in the clock settings tab).
- Fixed a bug causing the device ID being written incorrectly if it's changed in rare cases. Coded this very drunk, there might be bugs... :-/
- Added some nice method one hack signatures (4850, 4870 X2).
- Added a feature for method one overdrive hack signature saving and loading.

Have fun using it and please be sure to make extensive use of the signatures exchanging thread (http://forums.techpowerup.com/showthread.php?t=70980)!

[leonarderman]

RBE v1.15 (http://www.techpowerup.com/downloads/Utilities/RBE/) is ready for download!

That's the changes:

v1.15
- Fixed bug causing an error message on loading several BIOSes (small ones like several 3870 X2 BIOSes).
- Added remote control feature for WinFlash to acquire and flash BIOSes from within RBE. Will be included in the tutorial soon.
- Superior PowerPlay should be available for more 4870 BIOSes now.
- Added link to the tutorial in the menu bar. (Info... Tutorial on how to use RBE (websource)...)
- Added display for the card's internal voltage table (it's in the clock settings tab).
- Fixed a bug causing the device ID being written incorrectly if it's changed in rare cases. Coded this very drunk, there might be bugs... :-/
- Added some nice method one hack signatures (4850, 4870 X2).
- Added a feature for method one overdrive hack signature saving and loading.

Have fun using it and please be sure to make extensive use of the signatures exchanging thread (http://forums.techpowerup.com/showthread.php?t=70980)!



Thank you so much! :up:

[TI66ER]

Yes thanks bagzzlash,its the most useful ati tool yet :D

[binormalkilla]

So has anyone been able to get their edited BIOSes to work with 8.8 or 8.9? I've been trying to get mine working.......UGH. There must be a way......

[Mysterfix]

Try using rivatuner with official bios

[binormalkilla]

Is there a way to increase VGPU back to 1.21V like in a BIOS edit? I ran auto tune and got 690/1093.....
I know I can edit the voltage in the XML profile, but when I tried it didn't seem to work...

[Mysterfix]

use RBE 1.15 to edit your voltage in your original bios and reflash with the card 1.158 in RBE will give you max voltage.

[TI66ER]

It will also work on cat 8.8/9.It will NOT work on 8.8/9 if the bios is modded to more than 1.158v.

http://forums.techpowerup.com/showpost.php?p=980007&postcount=13

[BAGZZlash]

It will also work on cat 8.8/9.It will NOT work on 8.8/9 if the bios is modded to more than 1.158v.

http://forums.techpowerup.com/showpost.php?p=980007&postcount=13

Interesting. So the key is to keep the voltage settings within the given boundaries? Entering voltages beyond these boundaries is pointless anyway as the hardware won't set those values. So this would be no real restriction.

[MagnumMan]

I have the same issues with 3870 cards which are modded. Today I will try going to a pure stock Diamond 010.073.000.xxxxx BIOS, no mods at all, to see if Catalyst 8.7, 8.8 or 8.9 recognizes 4 cards. Then if the BIOS voltage setting is what's really messing things up I will adjust my pots. Currently the cards run 1.4V idle, close to 1.7V at load. Remember these are 3870s. If I can get that working then I will try putting in the "Method #1" signature to unlock the upper speed so I can run the cards at 1000/1275. I'll post my findings tonight, hopefully. Same thing should apply to the 4850 too.

[Ket]

Holy crap... you really need a better CPU *cough C2D :p:* to help unshackle those 3870s. Both of mine score about 15.2k on my system :p: once a new CPU is plonked in I'll be beating your results :D

[MagnumMan]

Agreed, however when I built the system it wasn't certain how limited the Phenoms were. I am eagerly awaiting the 45nm CPUs coming up from AMD... should help unlock some of the potential of my video array and should plug right into the MSI K9A2 Platinum. Back to the subject at hand, I will post about my findings on the voltage settings and CCC 8.8/8.9 compatibility.

[binormalkilla]

Interesting. So the key is to keep the voltage settings within the given boundaries? Entering voltages beyond these boundaries is pointless anyway as the hardware won't set those values. So this would be no real restriction.

Wait....I thought the BIOS limited it at 1.21V? Is it 1.158V or 1.21V?

Ah I see after reading the post from TPU that 1.158V in BIOS actually sets 1.2V via multimeter....I'll try when I get home. Thanks!

[Battlestar]

Hi,

Would be the Sapphire HD4850 Modded Bios will work under CCC 8.10Beta and Windows Vista 32Bit? Thanks

-Battlestar

[Vatos_locos]

is there any modded bios for the sapphire 4850 1Gb Version ?
Mhz Volts CCC limits
one @ 800/1150 souled be fine! plz dady :D

[leonarderman]

is there any modded bios for the sapphire 4850 1Gb Version ?
Mhz Volts CCC limits
one @ 800/1150 souled be fine! plz dady :D


You can use RBE 1.17 to modify your org Bios! Try for best! :D

[Vatos_locos]

i tried and for some reason when i mod the original bios the card cannot detected by the driver and i get an error code 10 on Vista
i have flashed countless vga's but i can't understand what the fluck is happening on this one
and i have seen this only on sapphire 4850's both 512 and 1Gb versions :(
i tryied all your bios's for the 512 and it does the same think

[LagunaX]

Is there a custom overclocked MSI hd4850 bios that works with catalyst 8.10?
The low 2d clock (idle, web surfing) of 160 would be ideal as the majority of the time it would be in that position.
Thanks if anyone has it, and if Leonarderman could make it =)

[RASTAVIPER]

Hey guys, I need some help here.
I have the Sapphire Radeon 4850 and yesterday I flashed my modded BIOS with RBE 1.17.
I changed the default clocks to 720/1200 and I changes the upper limits to CCC at 800/1300.
After tha flash went ok, I tested the system by playing 30 minutes Far Cry2.Everything was great and the temp was good as before the flashing.
Also I used the pc for 4 hours for watching TV or internet use.

Today, I wanted to see some emails and when it reached at windows desktop, I got 3 vertical columns full with artifacts and then my pc froze.I rebooted 3 times and everytime I got the same thing.
Sometime, I got a VPU recover message (even if I had it disabled) about that the graphics adapter was reset.The screen was ok for a few seconds, but again the pc froze.

What is your opinion?Can the bios cause all these troubles, when yesterday was working fine?Can the fan create problems?Or maybe the drivers, which were installed again after the flashing..

[DJSUB]

use catalyst 8.7

[DJSUB]

what do you think about this voltage @ full load? do you think it's possible?
my 4850 is volt modded & i use 1.4v for vgpu.
i set 0.89v idle & 1.044v full load in RBE together with 800/1150 core & memclock.
i'm wondering if the hardware monitor's detecting the real voltage required to run 800/1150 stable on atitool artifact test and furmark.
or it's only detecting the voltage set in the bios by RBE? i thought 800mhz core required 1.3v and above?

http://img404.imageshack.us/img404/4083/djsubvoltageqv0.jpg

[devil_mcry]

i have try to ovec my svga @ 725mhz (hd4850) but result at 3dmark06 is equal to 700mhz

ccc has a block of gpumhz? i have tested to 750mhz @1.158v ( 10min furmark renamed 1440x900 msaa8x extreme burn test)

what is the problem?

[devil_mcry]

what voltmod for hd4850 1gb blu design?

http://i40.tinypic.com/x5dxqt.jpg

i want a simple gpu vmod, with pencil if is possible, under 1.4v ( 1.26-1.3v is better)

is it possible?

[Vatos_locos]

it from the other side of the card :p:

[devil_mcry]

it from the other side of the card :p:

ok :P i will post a photo of other side

[supa-fly]

The links are dead on the first page.

Can anyone upload these files again pls :)