Proc: Q9650 9x496 @ 1.440v batch L844B703
Ram: 2x2GB OCZFlexII PC-9200 4:5 1240MHz 6-6-6-18 @ 2.12v
Mobo: Gigabyte EP45-UD3P rev 1.0 - bios F9b
Video: 2x Palit Dual Sonic HD4870 1GB in CF (840/4400)
PSU: OCZ PowerStream 520W + Thermaltake VGA 450W
HDD: 3x250Gb Barracuda 7.10 SATA2 Raid0 (ICHR10) 2x200Gb Barracuda 7.10 SATA2 Raid1 (ICHR10)
Audio: Audigy 4
Case: Dual Coolermaster Stacker; one for system rig and one for watercooling loop and cooling
[SIGPIC][/SIGPIC]
disabled overdrive, pencil modded...edited the bios with a hex editor...and flashed
I am just going to hazard a guess here, but I think the 4870s may not even be higher binned than the 4850s...since my stock voltage is 1.16v under load....it seems low. I'm almost willing to bet the 4870s will be running 1.2ish under load for 750mhz
Last edited by gurusan; 06-25-2008 at 02:48 AM.
|| 2500K @ 5GHz 1 thread, 4.8 2 threads, 4.7 3, 4.6 4 1.284V ||
|| P8P67-M Pro || 8GB @ 2133MHz ||
|| 5850 @ 1000/1225 || XFX 650W || Silverstone FT03B ||
|| 37" LCD TV || CM Hyper 212+ || Samsung 2.1 Soundbar ||
Sound very promising!
Is there a comprehensive guide on how to edit the bios to, for example, 750MHz?
How did you enable Powerplay? Did you edit that yourself also or did you take a 011.004 (which has Powerplay already enabled)
Will be doing the pencil mod myself this evening. Already performed the VR-volt mod last evening, but I'm out on 100K VR's so everything is soldered, only thing missing is the VR...
Last edited by DemonEyez; 06-25-2008 at 01:17 AM.
Proc: Q9650 9x496 @ 1.440v batch L844B703
Ram: 2x2GB OCZFlexII PC-9200 4:5 1240MHz 6-6-6-18 @ 2.12v
Mobo: Gigabyte EP45-UD3P rev 1.0 - bios F9b
Video: 2x Palit Dual Sonic HD4870 1GB in CF (840/4400)
PSU: OCZ PowerStream 520W + Thermaltake VGA 450W
HDD: 3x250Gb Barracuda 7.10 SATA2 Raid0 (ICHR10) 2x200Gb Barracuda 7.10 SATA2 Raid1 (ICHR10)
Audio: Audigy 4
Case: Dual Coolermaster Stacker; one for system rig and one for watercooling loop and cooling
[SIGPIC][/SIGPIC]
I didn't touch powerplay, I only edited the numbers I thought were 3d clocks in the bios.
I just used a hex editor to search for the 2d memory clocks (750mhz). The bios uses 75000 to indicate 750mhz, so using calc.exe convert 75000 to hex and you get 124F8.
Now for some reason it lists these values backwards in the bios....so you search for F8 24 01 (124f8 backwards).
Now if you convert some of the numbers around these you will see familiar clocks like 625mhz (3d clock)....do some converting for a bit and you will a pattern and recognize a table of clocks.
Now convert the appropriate numbers to your desired clocks, for example for a 750mhz clock use calc.exe to convert 75000 to hex, and replace the 625mhz hex values. Remember to do it backwards!
So afterward it would look like this:
****WOOPS i made a mistake...the bottom row should begin with F8 not 58 :p *****
Now save your bin as another file so you don't overwrite the original. By editing the bios you have changed the checksum...so your card will probably be borked if you flash it with the bios as it is.
To fix this read alexios tutorial:
http://www.xtremesystems.org/forums/...light=checksum
Last edited by gurusan; 06-25-2008 at 02:10 AM.
|| 2500K @ 5GHz 1 thread, 4.8 2 threads, 4.7 3, 4.6 4 1.284V ||
|| P8P67-M Pro || 8GB @ 2133MHz ||
|| 5850 @ 1000/1225 || XFX 650W || Silverstone FT03B ||
|| 37" LCD TV || CM Hyper 212+ || Samsung 2.1 Soundbar ||
thanks for the info
Q9650 @ 4Ghz - 1.216v
E8600 @ 4500Ghz - 1.34v - Q822A435
Q6600 @ 4014Ghz & E2160 @ 3.6Ghz
Silverstone Zeus 850w, Maximum formula,
Custom Water Cooling, 4GB OCZ 9200 Flex II,
Xfire 4850's 800/1150, 3D Mark 06 , Vantage,
Frontlineforce
Thanx for the elaborate explanation gurusan!
For those who don't want to mess with hex keep an eye on this topic on Techpowerup:
http://forums.techpowerup.com/showth...=54776&page=11
Wizzard wrote:
RBE supports 48xx fan control and overclocking now. Expect a release in the next days
it seems that the HD4870 is running with vgpu 1.263v according to this submitted bios:
Last edited by DemonEyez; 06-25-2008 at 06:04 AM.
Proc: Q9650 9x496 @ 1.440v batch L844B703
Ram: 2x2GB OCZFlexII PC-9200 4:5 1240MHz 6-6-6-18 @ 2.12v
Mobo: Gigabyte EP45-UD3P rev 1.0 - bios F9b
Video: 2x Palit Dual Sonic HD4870 1GB in CF (840/4400)
PSU: OCZ PowerStream 520W + Thermaltake VGA 450W
HDD: 3x250Gb Barracuda 7.10 SATA2 Raid0 (ICHR10) 2x200Gb Barracuda 7.10 SATA2 Raid1 (ICHR10)
Audio: Audigy 4
Case: Dual Coolermaster Stacker; one for system rig and one for watercooling loop and cooling
[SIGPIC][/SIGPIC]
good news to hear regarding RBE
And 1.263V.... so it looks like maybe I was right.
|| 2500K @ 5GHz 1 thread, 4.8 2 threads, 4.7 3, 4.6 4 1.284V ||
|| P8P67-M Pro || 8GB @ 2133MHz ||
|| 5850 @ 1000/1225 || XFX 650W || Silverstone FT03B ||
|| 37" LCD TV || CM Hyper 212+ || Samsung 2.1 Soundbar ||
i hope you all are looking in this thread..
http://www.xtremesystems.org/forums/...d.php?t=192411
very good news about the new versione of RBE!!!!!!!!!!!!!!!!!
I was waiting that!!!
C2D E6420 @3.2Ghz cooled by Zalman 9700 Led
2GB RAM GEIL ULTRA PC2-6400
RADEON HD4850 (waiting for voltmod & overclock )
ASUS P5E
W.D. RAPTOR 150GB
2*250GB SEAGATE 7200.10 SATA2 RAID 0 & 1
TAGAN EASYCON 580W
IIYAMA E2403WS
So im new to ATI, what is powerplay, also is a bios voltmod possible?
Newest 004 MSI 4850 bios modded to 725/1050 with RBE (s2-m3 and s4-m1 modded), so you can keep 160/500 on idle.
http://dl.free.fr/cRs3nPShs/msiOC725-1050.rom
"By editing the bios you have changed the checksum...so your card will probably be borked if you flash it with the bios as it is.
To fix this read alexios tutorial:
http://www.xtremesystems.org/forums/...light=checksum"
Thanks for sharing with us!
But....What kind of cheksum algorithm should we care?
There are so many algorithms from "checksum-8" to""sha1" in Hex Workshop,whichone should we care??CRC-32?
======It's Checksum-32.Problem solved!!Thank you all very much!
Last edited by fatbird2046; 07-03-2008 at 10:50 PM.
Hi guys,
who wants to give it a try to the latest* Toxic HD 4850 bios?
*Original Toxic BIOS was updated.
Edit: As i have seen, the new Toxic BIOS has 1100 Mhz RAM while the old one had 1150 Mhz.
http://rapidshare.com/files/133166787/ATI.rar
The file contains: ATOMBIOSBK-ATI VER011.004.000.000.000000 Sapphire Toxic HD 4850 BIOS
SS's of the HD 4850 and HD 4850 Toxic BIOSes for easy comparison.
BTW: I have a question. What happens if i flash my HD 4850 with the Toxic BIOS?
Thanks.
Last edited by cool_recep; 07-28-2008 at 01:20 PM.
Hey. I have a Sapphire HD4850 card. I measured vcore with DMM and it was 1.10 v. only under load. Is that normal? At idle, it's like everyone else has.
Gateway P-7811FX laptop.
40" Sony 1920x1080 LCD.
I just purchased a asus 4850 off of newegg and it's otw to my house. Can I use the radeon bios editor here
http://www.techpowerup.com/downloads/Utilities/RBE/
safely with my 4850 without using a multimeter?
I was considering a pencil mod eventually once I have a multimeter to use.
CPU:Q6600 G0 @ 3.825
Motherboard:Asus P5E X38
Memory:2x2GB OCZ Reapers DDR2 1066
Graphics Card:Asus 4850
Hard Drive:2xSegate 500gb 32MB Cache raid0
Power Supply:Xion 800W
Case:3DAurora
CPU cooling: D-tek Fuzion V2 (Quad insert removed)
GPU cooling: mcw60
Monitor:24" LG
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