Post your 8800GT Overclocks

H

HybReD1234

Limp Gawd
Joined
Aug 20, 2006
Messages
177
I haven't messed with mine too much yet (only 700/1000) but I was just wondering what most people managed to pull off.
 
You guys should also post if those are at stock BIOSes. With an OC BIOS or rivatuner the fans won't let the card get as hot so it should overclock bettter.
 
ATI Tool, no errors, no artifacts: 725/1760/1000.

I can push it up to 745/1760/1000 but I do get artifacts in ATI Tool.

For 24/7 I run my card at 700/1728/950.

My card is the eVGA 8800GT 512 regular clock (600/1500/900) w/ the Accelero S1.
 
BFG 8800GT OC2 512MB stock everything
740 core
1850 shader
1060 memory

regular bios, haven't upped voltage
 
Evga Super Clocked 8800GT (with old style cooler)

702 core
1800 shader
1002 memory.

@ 100% fan speed, but still getting super high fluctuating temps.
 
Stock 640 / 950 memory (forgot stock shader speed)

Overclocked 738 / 1782 / 990 (stable 24/7) stock cooler fan at 60% under load, replaced stock paste and pads with ceramique.

I really wanted my memory to reach a nice even 1000, but I will settle for the 100 MHz core overclock.
 
BFG OC 512MB
760 / 1890 / 920
Accelero S1 fed with cool air by a fan on the rear PCI blanking slots.
Idle currently 31C, load 39C, ambient 18C

Sadly It looks like something has indeed damaged on the memory side of things as it used to clock way over 1000MHz.
This was reported as a potential issue on [H] Forums if the memory controller is pushed near or over 1000MHz.
After observing the results of the memory clock on a few overclocking sites, it doesnt do much anyway so I'm happy :)
 
nenu do you get hardlocks with red artifacts when messing with the memory or just a clean frozen image ?
 
Fortunately it turned out not to be true :)
The problem is that with the S1 cooler, the warmer air from the heatsink affects the ram clock when you pump the speed of the core/shaders high.
Its like a trade off, if I go with lower GPU clocks, I can clock the ram higher and vice versa.

With the GPU running at say 720, I can get the ram to 1020 no problem.
Whew.
 
SoFGR said:
nenu do you get hardlocks with red artifacts when messing with the memory or just a clean frozen image ?
Click to expand...

for anybody else but I'm sure you all know this:

lock with artifacts = memory
lock with clean image = core / shader
 
These are my 24/7 clocks:

clipboard01nf3.jpg


8800GT is BIOS volt modded. 3dmark06 score is: 15752 with a Q6600 @ 3.6ghz -- all on air.
 
Awesome! My card is getting a shit load of those red artifacts lines right now. And I backed it down to 685/1600/1000 too.
 
eVGA 8800GT, stock bios, oldschool cooling, using Rivatuner

729 core
1849 shader
987 memory

I don't know what the max for the memory is as I've heard all sorts of rumours about memory dying when clocked at ~1000 or over. Figured I'd play it safe.

EDIT: Okay, after searching a bit, how the ef do I do a bios volt mod.
 
700 core / 1750 shader / 2000 memory, up from stock 600 / 1500 / 900.

I haven t tried to push it further than that, don t think I will either.
 
burnin8r said:
700 core / 1750 shader / 2000 memory, up from stock 600 / 1500 / 900.

I haven t tried to push it further than that, don t think I will either.
Click to expand...

You didnt change your ram speed from 900 to 2000, you either changed from 900 to 1000 or 1800 to 2000, depending whether you are talking bus speed or DDR speed.
 
chaloux said:
EDIT: Okay, after searching a bit, how the ef do I do a bios volt mod.
Click to expand...

This is from a guy on this forum, cant find his post though but this is a copy and paste that someone did from another forum which is what he wrote:

First of all I'd like to give full credit to Staypuft from [H]ardForum for his post regarding the instructions below, which took less than 10mins to apply to my 8800GT.

I have just volt mod my card and my temps have not even risen by a degree (I am using a S1 Arctic Cooler with turbo fans).

I plan to nail over 800 core and push the shader past 1900.

1) Created a bootable floppy using this, just run in windows with floppy in drive: Bootable Floppy Maker /ftp://ftp.veracomp.pl/mirror/abit/pub/download/utilities/drdos/drdflash.exe or the main site bootdisk.com http://www.bootdisk.com

2) Download and run this, .nvFlash 5.57 from mvtech http://www.mvktech.net/component/op...func,fileinfo/filecatid,2246/parent,category/ Look for nvFlash 5.57, it unzips to two files. Run the nvFlash.v5.57.exe and it unzips again. Drag files (cwsdpmi.exe, nvflash.exe) from the last unzip directory onto floppy

3) Reboot PC with floppy in drive, set floppy as first boot device in BIOS. The A:\ prompt shows up.
You will type: "nvflash --save orig.rom" (that's a double dash, and the file name orig.rom is your original video bios being saved)

4) Eject the floppy and reboot into windows. Re-insert floppy and copy orig.rom to somewhere you can find it later.

5) Download and install NiBiTor 3.6 from here mvtech http://www.mvktech.net/component/op...func,fileinfo/filecatid,2246/parent,category/ NiBiTor 3.6 page

6) Run NiBiTor, got to menu File>Open BIOS and select your orig.rom. Navigate to the 'Voltages' tab, then 'Exact Mode' tab. In the drop-down for 'Extra' select 1.1V.

7) Got to menu File>Save BIOS and create a new name like voltmod.rom. Exit NiBiTor and copy your voltmod.rom to the floppy.

8) Reboot PC with floppy inserted and you're back to A:\. Type "nvflash voltmod.rom" . It will ask you if you're sure, so make up your mind and type Y if you are sure. When it's done eject the floppy and reboot.

9) Retry overclocking beyond your previous limit.

____________________________________________________________________

You can also edit the Clockrates tab to put your safe overclock permanently into the BIOS so rivatuner isn't always running. Up to you. Good Luck.
Click to expand...
 
I guess I can post mine.

I didn't max the card out. Just tried 700/1000 and it worked great with no artifacts. Not going to try higher. BFG with the new BIOS for the OC version.
 
Milamber said:
This is from a guy on this forum, cant find his post though but this is a copy and paste that someone did from another forum which is what he wrote:
Click to expand...

I did the BIOS voltmod to 1.1V a while back and increased my core from 720 to 760MHz.
Shader clock went up from 1834 to 1890.
 
wonder if its worth bios voltmodding? have an S1 Acellero

btw is there any truth to the dieing mem @ 2ghz?
 
Digital Viper-X- said:
wonder if its worth bios voltmodding? have an S1 Acellero

btw is there any truth to the dieing mem @ 2ghz?
Click to expand...

I have an S1 too and I'd say its worth getting a bit of extra performance for free :).
Some cards are already at 1.1V so if you see no improvement that is why.
This also explains why some have higher temps than others.

The production versions of the 8800GT dont suffer from the memory controller failing at 2GHz+, I have been watching this carefully and havent seen any trend.
It looks like the problem is limited to pre-production releases.
 
Nenu said:
You didnt change your ram speed from 900 to 2000, you either changed from 900 to 1000 or 1800 to 2000, depending whether you are talking bus speed or DDR speed.
Click to expand...

yes, I failed to keep it consistant... for accuracy:

700 core / 1750 shader / 1000 memory, up from stock 600 / 1500 / 900

edit: equipped with 1.0 Qimonda chips
 
currently running 730/1800/1065 stock bios and hs.

3dmark06 = 15689

oh i think you guys should post what memory you have on your 8800gt because theres 2 types.

Qimonda - cant remember if thats the name.
or
Samsung
 
I just put mine in, passed 3DMark06 for 13,700 at 715/1787/1000. Maxed out at 52 degrees, running around 36 degrees idle. Tried one more time, putting my processor up to 4.0 ghz and scored a 13,973. I guess I am done. Going to run 24/7 at 675/975.
 
675 | 1700 | 2000 (core | shader | memory)

Stock hsf with fan adjusted in bios:
fan.png


Idles at 60°, replaced stock paste with ceramique (earlier today), has Qimonda chips.
 
I'm running my eVGA at 721/1802/1003(2006)
No artifacts, and load temps are around 62C with an Accelero S1
 
my pny 8800gt pixel/texture fillrate is 10.7Gpixel/s while others are in the 12G area and the my bandwidth is only at 61.4GB/s while an Evga is 64.6GB/s

Arent all 8800gt should be the same? except for the SC, SSC or OC version
 
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