8800GT bios for better overclocking! *test*

I have never tried and would never try it :eek:

Because mine are like 82°C with your clocks&voltage and stock cooler@60% and room temp@23°C.

back to topic:)

Idle, I guess? Hurry up to get your Accelero S1 ...

Are u kidding me?:) That is heavy-crysis-load (1680x1050 High).. Idle is max 55°C.

That´s a lot lower as aspected on my site, but 60 % @ 8800GT standard is a lot of noise ...
back to topic?!

I really really really would like to have the 1,2 V-Bios :D

It is a bit loud, but u can get used to it.. On your Accelero max 60°C on idle?!

Of course on highest load, monitoring by ATI-Tool 0.26 (Everest shows approx. 8°C lower temperatures).

One is core temp, and the other is ambient temp.. I will get it till the end of the week. I hope:)

so, any programmer here to change the BIOS correctly? Or is it impossible.. Just our dialogs here..:)

edit: tippo

Yes, let us come back to topic - where are the experts to give it a try?

As far as I know the BIOS cannot be modified to give more than 1.1v. I tried to change the BIOS to 1.15v, and it defaulted to 1.05v.

None of the methods explained thus far in this thread will allow more voltage through the BIOS. The highest VID is 03, and the card doesn't recognize anything higher. If there is a way to get more voltage through the BIOS it hasn't been discovered yet.

The stock cooler is adequate for the 1.1v BIOS mod. Just turn the fan up a little. I can barely hear it at 67% compared to the rest of my system, but I usually turn it up a bit more (75-85%) if I'm playing Crysis.

I'm going to get the HR03GT when it's released, and then I'll be trying the voltage mod using a variable resistor. I'm looking forward to those 850/2000/950 clocks!

Hehe, for 850 core freq. you will need some COLD water;) And a lot of luck.. I think I will wait for GTS and then make a compare, and keep the price/performer. I hope GTS will run at 750+ without any mods. Dualslot cooler, no need to replace it.

Now that was really off the topic..

Im using the gigabyte p35-ds3r, what setting do I set in bios to make it boot from USB?

hi, I have a XFX 8800gt XT, default clocks are 640, 1650, 950, and I do the volt mod flashing the bios, nvitor say that is ok the flash, 1,1v on the extra voltage, and my clocks range now go up to 770 and still working, maybe can do more, I continue testing, shadders go up to 1750 from 1700, but mems clocks it´s the problem..., without vmod, maximun stable to all games, was only 960, and after vmod, still the same frecuency, 960, if i go to 965, after play 20 mins or 30 on crisys, or after play 5 mins on pro evolution soccer (other games don´t give me a crash), I have a green colored pixeler screen for 10 seconds, and then the pc is freeze, or give me a blue screen with a nv4_dsp.dll error, is vga mems the problem? or was my pc specs?, I have a opteron 165 @ 2750, and a nforce4 based motherboard (msi k8n-sli) 2x 1 gb ram ocz platinum ddr 400 @ 450.

I have the stock Cooler, with 100% fan, and have 88º maximun on crysis only

Thanks!

@mrkarate - It's the vRAM. It sucks on the GT. Turn down the RAM speed. 88* w/ 100% fan!? That seems VERY high. What are your ambients? I max out at ~72* w/ the 1.1v BIOS mod.

@Gas - I think 850 is doable on high-end air. I've seen others do it w/ less than 1.3v. 900 is even possible, but I've read performance actually drops over 850. These chips don't get that hot w/ a good cooler on them. I'll let you know how it turns out after I do the mod. I'll probably have to wait till Christmas, though, to get all the goodies I need.

Quote:

---

Originally Posted by counsol

Im using the gigabyte p35-ds3r, what setting do I set in bios to make it boot from USB?

---

There is a key to press during the post to pop up a menu that let you choose from where to boot. It one of the F keys (might be F12, not sure though), you can see which one is it during the post, it is written at the bottom of the screen.

Or you can do it through the bios, you need to change the boot sequence, but I forgot exactly where is it. It should be one of the 2 first menus in the bios on the top left of the screen.

Quote:

---

Originally Posted by jason4207

@mrkarate - It's the vRAM. It sucks on the GT.

---

so, there is nothing I can do?, most people have an xfx 8800 gt xt can put mems to 1000... :(

Quote:

---

Originally Posted by mrkarate

so, there is nothing I can do?, most people have an xfx 8800 gt xt can put mems to 1000... :(

---

Unless you're into benching, the "real world" difference between your mems @960mhz and 1000 would be next to nothing.... and I've seen a few people who can't even get much past 900mhz stable on the various forums I go to.

I actually have to "underclock" my KO's mem from default 975 to 950 to be stable lol. I could do an RMA, but the core is strong (running 783core/1944shader) so I'll stick with it.

Quote:

---

Originally Posted by r4st4m4n

There is a key to press during the post to pop up a menu that let you choose from where to boot. It one of the F keys (might be F12, not sure though), you can see which one is it during the post, it is written at the bottom of the screen.

Or you can do it through the bios, you need to change the boot sequence, but I forgot exactly where is it. It should be one of the 2 first menus in the bios on the top left of the screen.

---

Hmm in bios do I select usb-hdd, usb-floppy, or something else? I've tried all of them and nothing works.

Select usb-floppy. BUt make sure your usb is floppy formated.

@new-b: your core is actually stable? Try ATiTool for like an hour, or go playing Crysis for an hour.. Beacuse my was stable for benches @771, but it locks up in crysis in five mins of playing..

@GaS
Yep...I only did about 30 min of ATiTool, but stable 2+ hours of Crysis.... I am on water cooling though so that may make the difference.
Max temps I've seen on the core is about 35c

Now that makes a difference:)

Quote:

---

Originally Posted by new-b

Unless you're into benching, the "real world" difference between your mems @960mhz and 1000 would be next to nothing.... and I've seen a few people who can't even get much past 900mhz stable on the various forums I go to.

---

I have run some benches with Crysis and for 712 Core and 1728 shaders, the memory speed do have some importance. I gain 0.5FPS on avg at the Crysis GPU benchmark between 972MHz and 999MHz ... I know 0.5FPs is not that much but in Crysis the avg is in the 30s so every tenth of frame count :D

going from 900MHz to 1000MHz on the RAM gives me around 10fps extra in some games, but only if I increase the GPU clock and shader clock too.

I`d leave the mem freq. near to 950-960 for 24/7 usage....the gain is pretty small i can see..

my current clock is 750/1750/960 stable crysis more 2 hours play, but, if I buy a coole (thermaltake hr-3 or something), can I do more OC?, or the current it´s the limit?

Without raising Vgpu you won't go any further..

I was wondering, since my ram overclock is so :banana::banana::banana::banana: (even 905) is not stable, would using a pencil marking along the edges of the resistors on bottom of vid card increase the voltage to the ram?

Have you tried the BIOS in the first post? It relaxes the RAM timings and should help with the OC.

Quote:

---

Originally Posted by Renegade5399

Have you tried the BIOS in the first post? It relaxes the RAM timings and should help with the OC.

---

Does that really make it faster tho? On my ATI testing I didn't see much perf difference on relaxed timings + faster clock vs. tighter timings + slower clock. (both x1900xtx and x2900xt)

I just noticed something i thought was kinda odd. Some peoples 'Exact Mode - Extra Voltage' is blank, mine is blank as well. but if you select hex view, you'll see the actual value.

Example, my EVGA 8800GT SC (650MHz), has a hex value of 0x82. which is 130 in decimal... in other words it's set to 1.3V. actual voltage is probably not that... but it is still kinda odd that it's set to that. so if it is set to an un-supported voltage, like 1.3, does it default down to 1.1V or default to something else? i guess checking with a volt meter would tell us.

In the pic below, is my cards default settings, read from the bios (bottom).. and EVGA SSC (top), read from a dump... that i was playing with to compare differences. it's default was 1.05V or 0x69, i was just playing around with it to see how the adjustments change the hex value.

kinda odd, huh?

http://img530.imageshack.us/img530/9...0gtbiosjz5.jpg

Quote:

---

Originally Posted by Diverge

I just noticed something i thought was kinda odd. Some peoples 'Exact Mode - Extra Voltage' is blank, mine is blank as well. but if you select hex view, you'll see the actual value.

Example, my EVGA 8800GT SC (650MHz), has a hex value of 0x82. which is 130 in decimal... in other words it's set to 1.3V. actual voltage is probably not that... but it is still kinda odd that it's set to that. so if it is set to an un-supported voltage, like 1.3, does it default down to 1.1V or default to something else? i guess checking with a volt meter would tell us.

In the pic below, is my cards default settings, read from the bios (bottom).. and EVGA SSC (top), read from a dump... that i was playing with to compare differences. it's default was 1.05V or 0x69, i was just playing around with it to see how the adjustments change the hex value.

kinda odd, huh?

---

According to Mavke (I think is the developer of Nibitor), the only things that the card recognize is the VID number between 1 to 4. 4 = 1.1V, 3 = 1.05V, ...
When you see in nibitor 1.1V, this only a label that nibitor make correspond to a VID but this label is only internal to nibitor and it's not taken from the bios.

So it is not possible to go higher than 1.1V since the card doesn't recognize other VID. This has been confirmed by Jason who tried to set the VID to 5, but as result the card reverted to a lower value, probably 1.05V.
Some people also tried to change the label in nibitor but as explained later by mavke, it didn't do nothing. It was also confirmed by the multimeter.

So I'm not sure what hex value you are reading but it is not the Vcore value. All the explanation above can be found in the previous posts. Check for Mavke's one. ;)

And as you can see in the image below, the part of the bios you are reading doesn't seem to be a part of the voltage table:
http://img108.imageshack.us/img108/2...toredithc2.jpg

Quote:

---

Originally Posted by r4st4m4n

According to Mavke (I think is the developer of Nibitor), the only things that the card recognize is the VID number between 1 to 4. 4 = 1.1V, 3 = 1.05V, ...
When you see in nibitor 1.1V, this only a label that nibitor make correspond to a VID but this label is only internal to nibitor and it's not taken from the bios.

So it is not possible to go higher than 1.1V since the card doesn't recognize other VID. This has been confirmed by Jason who tried to set the VID to 5, but as result the card reverted to a lower value, probably 1.05V.
Some people also tried to change the label in nibitor but as explained later by mavke, it didn't do nothing. It was also confirmed by the multimeter.

So I'm not sure what hex value you are reading but it is not the Vcore value. All the explanation above can be found in the previous posts. Check for Makve's one. ;)

And as you can see in the image below, the part of the bios you are reading doesn't seem to be a part of the voltage table:

---

I'm not saying that the card does anything with the default settings of my bios.. but it still says what it says in hex, which is 0x82 which coverts to 130 in decimal. change it to:

0.95V, and it reads 0x5F @ 0xBFD1 - (095 decimal)
1.00V, and it reads 0x64 @ 0xBFD1 - (100 decimal)
1.05V, and it reads 0x69 @ 0xBFD1 - (105 decimal)
1.10V, and it reads 0x6e @ 0xBFD1 - (110 decimal)

those are the only options you can pick.

My card has this field blank, from EVGA

it reads 0x82 @ 0xBFD1, which converts to 130 in decimal

that's what i find odd. that it is set to 1.3V by evga.

if I use the first post bios, may can i past 960 ram frecuency??, but, use another vendor bios, can cause a useless vga?? is dangerous?? , and if not, I have to use that bios with the default bios vendor? or I change with mi vga vendor? (xfx instead of Sparkle)


thanks!

Quote:

---

Originally Posted by Diverge

I'm not saying that the card does anything with the default settings of my bios.. but it still says what it says in hex, which is 0x82 which coverts to 130 in decimal. change it to:

0.95V, and it reads 0x5F @ 0xBFD1 - (095 decimal)
1.00V, and it reads 0x64 @ 0xBFD1 - (100 decimal)
1.05V, and it reads 0x69 @ 0xBFD1 - (105 decimal)
1.10V, and it reads 0x6e @ 0xBFD1 - (110 decimal)

those are the only options you can pick.

My card has this field blank, from EVGA

it reads 0x82 @ 0xBFD1, which converts to 130 in decimal

that's what i find odd. that it is set to 1.3V by evga.

---

I have an elite group 8800gt and my bios also is blank at that spot. Have u tried a multimeter?
Have you tried making it 1.1v and flashing? Any changes in OC?

Quote:

---

Originally Posted by Diverge

I'm not saying that the card does anything with the default settings of my bios.. but it still says what it says in hex, which is 0x82 which coverts to 130 in decimal. change it to:

0.95V, and it reads 0x5F @ 0xBFD1 - (095 decimal)
1.00V, and it reads 0x64 @ 0xBFD1 - (100 decimal)
1.05V, and it reads 0x69 @ 0xBFD1 - (105 decimal)
1.10V, and it reads 0x6e @ 0xBFD1 - (110 decimal)

those are the only options you can pick.

My card has this field blank, from EVGA

it reads 0x82 @ 0xBFD1, which converts to 130 in decimal

that's what i find odd. that it is set to 1.3V by evga.

---

Oh, ok. sorry I misunderstood your post.

It would be interesting to measure how much volts you get with the odd bios.

You ppl talk too much. Just use the voltmeter and read the voltage..

if I use the first post bios, may can i past 960 ram frecuency??, but, use another vendor bios, can cause a useless vga?? is dangerous?? , and if not, I have to use that bios with the default bios vendor? or I change with mi vga vendor? (xfx instead of Sparkle)


thanks!

This is only the deviceID/vendorID, nothing harmful.. You can also download your BIOS from your gfx, and edit it. Correcting timings in BIOS is easy. Not:)

So...I've edited my BFG OC bios to add the extra 1.1 v and changed vid3 to 1.1 v as well. I've also edited my vram timings to that of the bios on the first page and set the default clocks to 700/1750/900 (stable clocks for me). So do you think that all should be OK flashing??? The goal here is:

1 - add the 1.1 v for extra clearance
2 - set my oc clocks at the bios level
3 - loosen my vram timings in hope of increasing vram clocks

Thoughts?

Quote:

---

Originally Posted by theonlybabyface

So...I've edited my BFG OC bios to add the extra 1.1 v and changed vid3 to 1.1 v as well. I've also edited my vram timings to that of the bios on the first page and set the default clocks to 700/1750/900 (stable clocks for me). So do you think that all should be OK flashing??? The goal here is:

1 - add the 1.1 v for extra clearance
2 - set my oc clocks at the bios level
3 - loosen my vram timings in hope of increasing vram clocks

Thoughts?

---

the same as i did, except i dint touch the ram timings. it overclocks nicely at 950MHz- I havent tried more and probably wont try more.

someone flash with the first post bios (lower timmings) and make more oc to ram frequency?, it´s working?

Quote:

---

Originally Posted by heikis

the same as i did, except i dint touch the ram timings. it overclocks nicely at 950MHz- I havent tried more and probably wont try more.

---

Unfortunately, my ram doesn't clock very well so I'm hoping that the looser timings will make a difference.

Quote:

---

Originally Posted by mrkarate

someone flash with the first post bios (lower timmings) and make more oc to ram frequency?, it´s working?

---

read the whole thread, you might just see someone's results.

I can overclock my Inno3d 8800GT RAM to 1050MHz, should be safe right?

What I did was take the eVGA 8800GT SSC BIOS, changed the voltage to 1.1v, and flashed it to my Palit. Since the card is more than stable at 700/1750/1000, the SSC BIOS is fine. But without changing the RAM timings 1000 is it for the RAM. I then took the same BIOS, changed the timings to the ones from the first post and now the RAM will go to 1044 no issues. Not much, but it helps.

Tossing in more data for you guys:

eVGA SC 8800GT default BIOS & no OVP mod.
Crysis (15 hours) / ATiTool (150mins) Stable: 713/1728/945
Cod4 / UT3 (2+ hours) / 3Dmark06 Stable: 740/1890/1018

1.111V idle desktop
1.149V Crysis medium settings
1.151V Crysis high settings

*Craftsman 82344 Digital Multimeter

I use the first post bios mems timmings, and 1,1v and nothing... my mem´s don´t go up to 960...

Quote:

---

Originally Posted by Diverge

read the whole thread, you might just see someone's results.

---

We should have an "official modded 8800gt results" thread.

also, a step by step explanation of how to do all this stuff.

Quote:

---

Originally Posted by smsmasters

I can overclock my Inno3d 8800GT RAM to 1050MHz, should be safe right?

---

Jonnyguru said on another forum that something bad will happen if you go over 950 for 24/7 use. But he didn't give much explanation on that, just that it was the reason why many facturers don't OC the mem higher than that.

Well, now that we have more OC results, we can see that on many boards, the RAM doesn't clock well. Many users here doesn't seem to be able to reach 1000, the average being more in the 950. And the one reaching 1000 can go much higher.

So now I wonder if the manufacturers doesn't clock the mem higher simply because the mem chips are :banana::banana::banana::banana: :rolleyes:

Quote:

---

Originally Posted by r4st4m4n

Jonnyguru said on another forum that something bad will happen if you go over 950 for 24/7 use. But he didn't give much explanation on that, just that it was the reason why many facturers don't OC the mem higher than that.

Well, now that we have more OC results, we can see that on many boards, the RAM doesn't clock well. Many users here doesn't seem to be able to reach 1000, the average being more in the 950. And the one reaching 1000 can go much higher.

So now I wonder if the manufacturers doesn't clock the mem higher simply because the mem chips are :banana::banana::banana::banana: :rolleyes:

---

He said something of a snippet from a certain XFX employee, and even said not to take it too far. Something that running over 1000MHz might degrade the RAM chip or whatever...

Since bandwidth does not matter to me I leave it down at 945, highest I have tried was 1018, but have not tried higher.

Quote:

---

Originally Posted by Renegade5399

What I did was take the eVGA 8800GT SSC BIOS, changed the voltage to 1.1v, and flashed it to my Palit. Since the card is more than stable at 700/1750/1000, the SSC BIOS is fine. But without changing the RAM timings 1000 is it for the RAM. I then took the same BIOS, changed the timings to the ones from the first post and now the RAM will go to 1044 no issues. Not much, but it helps.

---

Yes but did u get any fps increase?

So, what do you think the chances are that the new 8800GTS (G92) is using A2 of the GPU, and we can flash that bios onto the GT to make it a GTS

Modded my BFG OC bios to some conservative speeds and relaxed my timings to those on the first post with the 1.1 v mod. I'll test it later to see if my overclock has improved or not. Funny thing is...if I overclocked with rivatuner previous to the flash to the same speeds with the factory tighter timings, I scored less in 3DMark06. With the relaxed timings, the bios set overclock and the extra volts, my 3DMark06 actually increased by nearly 500 points. Go figure. :)

PS - Original clocks were 625/1566/900

Here is a new BIOS that increases fanspeeds for the EVGA 8800GT SC ;)

http://www.evga.com/forums/tm.asp?m=176929

Quote:

---

Originally Posted by r4st4m4n

Jonnyguru said on another forum that something bad will happen if you go over 950 for 24/7 use. But he didn't give much explanation on that, just that it was the reason why many facturers don't OC the mem higher than that.

Well, now that we have more OC results, we can see that on many boards, the RAM doesn't clock well. Many users here doesn't seem to be able to reach 1000, the average being more in the 950. And the one reaching 1000 can go much higher.

So now I wonder if the manufacturers doesn't clock the mem higher simply because the mem chips are :banana::banana::banana::banana: :rolleyes:

---

Beacause the mem of this card is not sth special,running over 2Ghz effective,might give you permanent artifacts within time...
no need to push it to limits for 24/7 usage..

I have EVGA vanilla stock GT clocks of 600/900/1500

Did the 1.1V Bios Mod

Running stable 24/7

http://img106.imageshack.us/img106/5405/8800gtkv8.jpg

My memory doesen't clock so well but who cares.

13,333 3DMark06 w/ this also 24/7 stable

http://valid.x86-secret.com/show_oc.php?id=275691

Quote:

---

Originally Posted by giorgos th.

Beacause the mem of this card is not sth special,running over 2Ghz effective,might give you permanent artifacts within time...
no need to push it to limits for 24/7 usage..

---

To be on the safe side I use now 2 OC profiles:
- 24/7 OC is 700/1675/950 which allow me to play any game maxed out at 1280x1024 except crysis (i have only a 19'' monitor :( )
- A crysis OC profile at 712/1728/1000 that i activates thanks to a key stroke shortcut set in rivatuner :)

My memory seems quite good since I only start to get artifacts around 1020 MHz so by running at 1000 MHz I still have a small safety margin. ;)

I tried the BIOS voltmod, 1.2v. I measure the 2d volt to 1.108 and the 3D volt 1.145. Someone said that 1.1 was max trough bios. Is my multimeter inacurate?

I've got a Zotac card which comes stock with 1.1v on the core and 2.0v on the ram, as measured with a multimeter.

Just flashed it with a modded bios (Set to 1.2v and with RAM timings loosened to Qimonda spec) and i'm now seeing 1.15v on the core. Clocks are now 100% stable @

771/1836/2000

Card is watercooled and doesn't top 45c load.

@johnnyt1000
Could you please upload your bios?

Quote:

---

Originally Posted by hifiking

I tried the BIOS voltmod, 1.2v. I measure the 2d volt to 1.108 and the 3D volt 1.145. Someone said that 1.1 was max trough bios. Is my multimeter inacurate?

---

No, the card overvolt slightly from the value in the bios and particularly it overvolts during load.

So does only changing the "Extra" voltage in NiBiTor cause the change to 1.10V? My Palit reference card has VIDs 1.10, 1.05, 1.00 and 0.95 but the Extra voltage selection is blank. The card clocks to 756/2124/1836 for 3D06 so far on stock air with stock BIOS.

TIA.

Quote:

---

Originally Posted by antari

The card clocks to 756/2124/1836 for 3D06 so far on stock air with stock BIOS.

---

Just be happy if it really is stable, that's well above average result and would put a smile on my face if I had reached on stock cooler and volts. :D

Unfortunately that is not 100% stable with the stock cooler, it is OK in ATItool until the temperature reaches about 58 to 60 degrees then it occasionally artifacts. I have not tried Crysis as I only have that in Vista, my XP hard disk that I do overclocking with ONLY has XP and the necessary overclocking/benchmarking tools.

So far 720/1728/2050 (approx) is completely game stable but for day-to-day gaming I run at bone stock 600/1500/1800 as that is fast enough for what I play generally. I am sure I could go a bit further than that stable but I'd much rather get the benchmarking results then go back and play games than find the max 100% stable speed that I will never use.

Quote:

---

Originally Posted by antari

So does only changing the "Extra" voltage in NiBiTor cause the change to 1.10V? My Palit reference card has VIDs 1.10, 1.05, 1.00 and 0.95 but the Extra voltage selection is blank. The card clocks to 756/2124/1836 for 3D06 so far on stock air with stock BIOS.

TIA.

---

lots of cards have that field blank, as does mine. It's cause it actually has a different value at that address, which doesn't correlate to the known value in nibitor... at least that is what i think. I posted what i found in this thread a few pages ago.

Yours most likely is set to a higher value, even though it doesn't really set it to that value. whether it defaults down to the highest working value (1.1V) hasn't been verified.

click hex view in nibitor, then click the Extra voltage that is blank. it will jump to that address/value in the hex view and show you the value in hex. Now toggle through the values you can select and watch that hex value change... i bet yours was set to a higher hex.

Mine in that address had hex 0x00 :shrug:

Quote:

---

Originally Posted by antari

Mine in that address had hex 0x00 :shrug:

---

weird, mine has a 0x82... which is 130 in decimal.. or 1.3V.. which obviously didn't really set it to that, since the max you can set is 1.1V.

Just bit the bullet and tried the mod.

Steps:
1. Dump BIOS from card to NiBiTor
2. Change "Exact" "Extra" voltage in NiBiTor to 1.1V (was blank)
3. Save BIOS to bootable disk.
4. Reboot to DOS bootable disk, flash using command "nvflash -4 BIOSNAME.rom"
5. Reboot. That's it.

It seems to have worked, happily ATItool testing core @ 756/1836 (which has locked up once or twice for me before in 3D06.

edit: spoke too soon maybe? Perhaps it's the cooler temperatures. 771MHz core artifacted in ATItool right away, no crash or anything though.

edit2: 771MHz core is going fine with shaderclock bumped down to 1782... temp 55°C with stock cooler, fan @ 100%
edit3: 771MHz went fine in ATItool for 30minutes so I've stopped it, bumped core to 777mhz and retried. So far good for 10 minutes.

no need to upper the core and lower the shaders...
you`ll have the same performance like with link clocks.
i`m for now using mine at 771/1890/1900 with water with no problems at all.

Hmm I think cooling may be some of my problem... what maximum load temperature do you get with water?

Quote:

---

Originally Posted by antari

Just bit the bullet and tried the mod.

Steps:
1. Dump BIOS from card to NiBiTor
2. Change "Exact" "Extra" voltage in NiBiTor to 1.1V (was blank)
3. Save BIOS to bootable disk.
4. Reboot to DOS bootable disk, flash using command "nvflash -4 BIOSNAME.rom"
5. Reboot. That's it.

It seems to have worked, happily ATItool testing core @ 756/1836 (which has locked up once or twice for me before in 3D06.

edit: spoke too soon maybe? Perhaps it's the cooler temperatures. 771MHz core artifacted in ATItool right away, no crash or anything though.

edit2: 771MHz core is going fine with shaderclock bumped down to 1782... temp 55°C with stock cooler, fan @ 100%
edit3: 771MHz went fine in ATItool for 30minutes so I've stopped it, bumped core to 777mhz and retried. So far good for 10 minutes.

---

and, this modification resolve the 30% fan speed problem?

hello all,
me i've flash my XFX GT with the bios post in first. I change the manufacturer and the subsystem ID.
For précision i'm at (max) : 740/2106/1836 (orig 640/1900/1600)... and i've made 14025 on 3DMark06 with my E6850...
With the bios mod at 1.1 i can't pass this limit !

when i more easy with nibitor i've tryied to put the voltage at 1,15v but impossible, i've tryied tis to :

Voltage 1 : VID0 1v
Voltage 2 : VID1 1,05v
Voltage 3 : VID2 1,1v (= put VID3 for have 1,15v)
Voltage 4 : VID3 1,15v

The same system of bios orig but i replace the VID3 1,1v by 1,15v
All the VID are the same of original 0/1/2/3 but the modif of VID2/3 by hex

2nd test
Voltage 1 : VID0 0,95v
Voltage 2 : VID1 1v
Voltage 3 : VID4 1,15v
Voltage 4 : VID4 1,15v

I put a new VID the 4 and i put 1,15v...

The flash it's ok, but the oc it's the same or bugg of card :(

I sur that possible to put the voltage more of 1.1v

Quote:

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Originally Posted by antari

Hmm I think cooling may be some of my problem... what maximum load temperature do you get with water?

---

with the heater on in the room,i max load at 42C.
Without it at 34-35C.
i also have the quad and the X38 in the loop.

Quote:

---

Originally Posted by Khapz

and, this modification resolve the 30% fan speed problem?

---

Nope it does not. For benching I use 100% fan speed, and I have set up fan speed profiles in RivaTuner for standard use/gaming.

Quote:

---

Originally Posted by giorgos th.

with the heater on in the room,i max load at 42C.
Without it at 34-35C.
i also have the quad and the X38 in the loop.

---

Thanks very much :up: Looks like water will be the way to go for me.

Quote:

---

Originally Posted by Jip

hello all,
me i've flash my XFX GT with the bios post in first. I change the manufacturer and the subsystem ID.
For précision i'm at (max) : 740/2106/1836 (orig 640/1900/1600)... and i've made 14025 on 3DMark06 with my E6850...
With the bios mod at 1.1 i can't pass this limit !

when i more easy with nibitor i've tryied to put the voltage at 1,15v but impossible, i've tryied tis to :

Voltage 1 : VID0 1v
Voltage 2 : VID1 1,05v
Voltage 3 : VID2 1,1v (= put VID3 for have 1,15v)
Voltage 4 : VID3 1,15v

The same system of bios orig but i replace the VID3 1,1v by 1,15v
All the VID are the same of original 0/1/2/3 but the modif of VID2/3 by hex

2nd test
Voltage 1 : VID0 0,95v
Voltage 2 : VID1 1v
Voltage 3 : VID4 1,15v
Voltage 4 : VID4 1,15v

I put a new VID the 4 and i put 1,15v...

The flash it's ok, but the oc it's the same or bugg of card :(

I sur that possible to put the voltage more of 1.1v

---

If you read the earlier post in the thread it is already explained why the modification you have done does not work and also that it seems impossible to go higher than 1.1V with a bios mod ;)

yup thank's a lot ...:(

but impossible is not french ^^

But it's sure that's seem impossible to pass 1,1v by bios mod... sic

antari

The largest gain on 8800GT you get from shader OC, then core and then memory. Lowering shader so that you can get higher core clocks will not get you higher overall performance. (see below)

http://resources.vr-zone.com/floppyimage/8800gt/oc.jpg
Link to VR-Zone 8800GT OC

Quote:

---

Originally Posted by Jip

hello all,
me i've flash my XFX GT with the bios post in first. I change the manufacturer and the subsystem ID.
For précision i'm at (max) : 740/2106/1836 (orig 640/1900/1600)... and i've made 14025 on 3DMark06 with my E6850...
With the bios mod at 1.1 i can't pass this limit !

when i more easy with nibitor i've tryied to put the voltage at 1,15v but impossible, i've tryied tis to :

Voltage 1 : VID0 1v
Voltage 2 : VID1 1,05v
Voltage 3 : VID2 1,1v (= put VID3 for have 1,15v)
Voltage 4 : VID3 1,15v

The same system of bios orig but i replace the VID3 1,1v by 1,15v
All the VID are the same of original 0/1/2/3 but the modif of VID2/3 by hex

2nd test
Voltage 1 : VID0 0,95v
Voltage 2 : VID1 1v
Voltage 3 : VID4 1,15v
Voltage 4 : VID4 1,15v

I put a new VID the 4 and i put 1,15v...

The flash it's ok, but the oc it's the same or bugg of card :(

I sur that possible to put the voltage more of 1.1v

---

It doesn't matter what label you put next to VID. nVidia GPU uses VIDs levels and there are only four usable: VID00 - VID03. "0.95"-"1.1" is label only for people to understand which VID is which. GPU doesn't care which label you assign to VID. Thus your OC result stays the same.

Regards

Quote:

---

Originally Posted by F@32

antari

The largest gain on 8800GT you get from shader OC, then core and then memory. Lowering shader so that you can get higher core clocks will not get you higher overall performance. (see below)

http://resources.vr-zone.com/floppyimage/8800gt/oc.jpg
Link to VR-Zone 8800GT OC

---

Thank you. I was just testing maximum stable core. I have not tested maximum shaderclock yet, however I think 1836 may be the maximum without a hardmod.

I have a BFG 8800gt OC, and i can get 732/965/1798 stable on 100% fan speed with the bios changed to vid03 1.1v, i am using the bfg bios not the one on the first post.

I didn't feel like going over 965 on the memory side, but i know it can't go over 1010 since i did try that once.

I was just wondering what aftermarket air coolers people are putting on this card?

Quote:

---

Originally Posted by zbomb5610

I have a BFG 8800gt OC, and i can get 732/965/1798 stable on 100% fan speed with the bios changed to vid03 1.1v, i am using the bfg bios not the one on the first post.

I didn't feel like going over 965 on the memory side, but i know it can't go over 1010 since i did try that once.

I was just wondering what aftermarket air coolers people are putting on this card?

---

Mine is under water, but waterblock is last in the loop after CPU and NB. Thus my 755/1825/2000 clocks and 1.1v get to 50C.

has anyone done the flash with a leadtek ? :D

all the cards are reference design..
If it works into one brand,it`ll work in everyone i guess..

someone have test cooling with HR03-GT ?? For me it's available the newt week...
But i hesite to buy an HR03GT for cooling my XFX at 740/2106/1836 or buy an 8800GTS V2 ... :banana::banana::banana::banana:**g choice ^^ lol

im getting 730 (linked) /2050 with stock voltages through riva tuner.

I have BFG Tech Card w/ stock cooler, the OC is very noticable.

Under load my temps are reaching 85C!

Thinking about putting this card on water. I don't know the limits yet as I have sceen no artifacting in bioshocka nd crysis. But I'm not sure if I am going to keep the card.

I have not flashed a vid card bios since the 9800 pro days but I might give it a shot.

I just installed the Zalman vf900, idles at 38, load is at 53.....nice little cooler.

Quote:

---

Originally Posted by Jip

someone have test cooling with HR03-GT ?? For me it's available the newt week...
But i hesite to buy an HR03GT for cooling my XFX at 740/2106/1836 or buy an 8800GTS V2 ... :banana::banana::banana::banana:**g choice ^^ lol

---

Mines coming tomorrow.

Any idea if you can use NiBiTor with the 512 GTS?

I have one coming on the 10th hopefully and I'm keen to do the Bios Mod.

hey hey me it comes next week i think...

If i not cracked for GTS ^^ lol

MY PNY 8800 GT normal version reads 1.15v @ 3D Load. I'm running it on 700-1782-1900

Edit running 725-1782-2000 now so far so good.

Quote:

---

Originally Posted by The Asgard

Any idea if you can use NiBiTor with the 512 GTS?

I have one coming on the 10th hopefully and I'm keen to do the Bios Mod.

---

NiBitor 3.6 will work with the GTS
The GTS has already 1,15V in BIOS what is the max value.

i just flashed my GT to a GTS... works, so far.. not sure if there is any benefit. i doubt there will be though, just would be cool if it did.

my only problem so far is the current drivers don't recognize my card... so it's just a standard vga device. anyone got GTS drivers... so i can test it? lol

I found this picture:

http://www.expreview.com/img/news/20...8800GT512m.jpg

And i saw Asus is not cooling all the vrm's that the stock is cooling trough thermal pads. So if i look at this you only have to cool the two blocks of 3 vrm's when you install a 3d party cooler like the TT Duo orb or the VF900.

I might try this this week. Maybe i should put a temp sensor on the other vrm's or something. Dont wanna kill my card..

Quote:

---

Originally Posted by Diverge

i just flashed my GT to a GTS... works, so far.. not sure if there is any benefit. i doubt there will be though, just would be cool if it did.

my only problem so far is the current drivers don't recognize my card... so it's just a standard vga device. anyone got GTS drivers... so i can test it? lol

---

Forceware 169.06 WHQL : http://www.station-drivers.com/page/...0forceware.htm

Where did you find the bios ? Can you post it here ?

Quote:

---

Originally Posted by Diverge

i just flashed my GT to a GTS... works, so far.. not sure if there is any benefit. i doubt there will be though, just would be cool if it did.

my only problem so far is the current drivers don't recognize my card... so it's just a standard vga device. anyone got GTS drivers... so i can test it? lol

---

How many stream processors is now listed using gpu-z after u flashed from GT to GTS?

Quote:

---

Originally Posted by Diverge

i just flashed my GT to a GTS... works, so far.. not sure if there is any benefit. i doubt there will be though, just would be cool if it did.

my only problem so far is the current drivers don't recognize my card... so it's just a standard vga device. anyone got GTS drivers... so i can test it? lol

---

Seriously? Any improvements in benchmark scores? Does the card match the GTS clocks? It'd be awesome if the extra SP's can be unlocked.. But thats probably too good to be true

I also serioulsy do not think that a bios flash will enable the SP, based on nvidia's past experiences. Also, note that the GTS consumes HUGE amounts of energy more than the GT for the extra SPs to run.

No way in hell that can be accomplished on the GTs unless hardware volt mods are done.

The fun might be that if the SPs are disabled only via firmware, if someone could enable only a some of the 128sps (more than GT, but less than GTS) then it might work.

Quote:

---

Originally Posted by Diverge

i just flashed my GT to a GTS... works, so far.. not sure if there is any benefit. i doubt there will be though, just would be cool if it did.

my only problem so far is the current drivers don't recognize my card... so it's just a standard vga device. anyone got GTS drivers... so i can test it? lol

---

Post your bios plz ^^

8800GT SPs are fused, i.e. hardware disabled. BIOS or nVstrap won't work. (would be nice though eh?)

Idle max VID03 is 1.1. 8800GT overvolts under load by 0.05v.

8800GTS BIOS File