*** Official 8800GTS 512MB (G92) O/C Thread ***

[shabby]

Funny thing i noticed with my 8800gt was that my pc would crash if the overclock was too high, but with the 8800gts it simply beeps in the artifact scanner or shows some delta errors, but no crashes. Any idea why the 8800gt simply crash?
So far my evga gts is stable at 750/1850/1050 for 5 minutes in ati tool, running the fan at 65% and 65c during load. I plan to add a duct to the stock fan that will mate directly with my 120mm intake fan, that should bring the temps down a bit more.

 

[ArchAngel777]

Does anyone know if you can get Rivatuner working with Vista X64? I don't want to have to reboot hit F8 and then disable unsigned driver requirement, which is the only way I know how to get it working... I have read that it supports Vista X64 bit with a signed driver, but it didn't work for me last night. If anyone has any tips, that would be great.

 

[manimal]

add the line G92 = 600h in the rivatuner cfg in the rivatuner folder, that worked for me.

 

[ArchAngel777]

Originally posted by: manimal
add the line G92 = 600h in the rivatuner cfg in the rivatuner folder, that worked for me.

I did that, but as far as I know that only affects detection. The problem is the same one I have had on any graphics card, even ones natively supported by Riva Tuner. Are you running Vista X64? I may give it another shot tonight.

 

[shabby]

I managed to get my gts running at 775/1900/2200 for 30min with no artifacts, loaded crysis and it crashed within 5 minutes. Should i lower the gpu/shader or memory?

 

[manimal]

Originally posted by: shabby
I managed to get my gts running at 775/1900/2200 for 30min with no artifacts, loaded crysis and it crashed within 5 minutes. Should i lower the gpu/shader or memory?

First thing you should do is crank up the fan to 75-80 percent, then test out what MAX oc you can get with ATI tool--


I like to test for 1-5 mins with ATI tool, if im stable for that setting then I keep raising mem, clock and shader independently, first establish max clock then shader then mem etc...


After I establish the max then I dial back down a tier or two on all-especially mem-since I like to have my hardware last a few years and the only thing I have ever blown up was a graphics card-volt mod lol-


For the above speeds you have listed I would back down shader and find your max clock then find the others, my card doesnt like shaders over 1900 at all.


Disable UAC in vista 64 then install rivatuner, I had it working fully on vista 64 partition.

 

[Hauk]

Originally posted by: shabby
Funny thing i noticed with my 8800gt was that my pc would crash if the overclock was too high, but with the 8800gts it simply beeps in the artifact scanner or shows some delta errors, but no crashes. Any idea why the 8800gt simply crash?
So far my evga gts is stable at 750/1850/1050 for 5 minutes in ati tool, running the fan at 65% and 65c during load. I plan to add a duct to the stock fan that will mate directly with my 120mm intake fan, that should bring the temps down a bit more.

Three phase power on GTS and two phase on GT? Just guessing.

Regarding your 775/1900/2200 Crysis crash, prolly try lowering memory first, then shader. People are oc'ing shader past 1850, but that's pretty ambitious imo..

 

[shabby]

manimal: fan is already running at 70%, temps were 65c after 30minutes of artifact scanning.
Using the artifact scanner those were the max clocks i could get, if i went 25mhz more on the gpu/shader or memory i'd get random artifacts.

SteelSix: i just wanted round 800/2000/2400 numbers, im not ambitious

 

[Hauk]

Originally posted by: shabby
manimal: fan is already running at 70%, temps were 65c after 30minutes of artifact scanning.
Using the artifact scanner those were the max clocks i could get, if i went 25mhz more on the gpu/shader or memory i'd get random artifacts.

SteelSix: i just wanted round 800/2000/2400 numbers, im not ambitious

 

[nib95]

Wow, some of you are getting crazy clocks. Question is, how much is it actually improving gaming performance?

 

[ArchAngel777]

Originally posted by: nib95
Wow, some of you are getting crazy clocks. Question is, how much is it actually improving gaming performance?

It increases performance quite a bit. I was able to increase performance about 15% in shader intensive type games and about 10% with games with high AA and AF due to running my memory clock higher.

BTW - I was able to get Riva Tuner installed and working... The reason it did not work is because I ran it from the zipped folder and it didn't pickup the driver file. So I never had the option to update it. I uninstalled it, rebooted, copied the setup folder outside of the zip and ran the setup. Worked great after that. I setup some profiles, but they seem to be buggy... They worked for a while, but then they stopped working.

I set the fan for 50% below 60C, and then 70% for 65C and then 100% for 70C. It worked for a while, but then it stopped working and kept the fan at 70% despite it being 48C. Kinda strange since it was working properly...

 

[SLU Aequitas]

eVGA GTS; max stable I got was 765/1825/2000 @ 55% w/65c max temp under 8 hour Crysis session (I was just breaking in the card, honest ); I actually keep it running at 741/1851/2000 for longevity, however, fan @ 50% w/65c max temp again.

Also, the eVGA fan is *really* loud when spooled up past 60% in Rivatuner; I'm coming from a 7800GT...

Also, same testbed, from eVGA 7800GT (stock) --> eVGA 8800GTS 512 741/1851/2000, in 3DMark06 I went from 4390 to 12616; that in and of itself means nothing, but I can play Crysis at 16x10 at "Very High" (DX9 optimized) in Vista x64 at a playable fps (I haven't actually measured), and Oblivion eats the dust, finally.

 

[shabby]

Alright i settled at 750/1850/2200 with my gts, fan at 70% and 62c under load. Im suprised how well the stock fan cools

ArchAngel777: where can you set so it changes the fan speeds depending on gpu temps?

 

[Zambien]

Originally posted by: manimal

Originally posted by: Zambien
I'm unable to O/C anything but the memory. Even with fan at 100%. This is an MSI OC edition that runs at 730 stock.

I'm at

730/1839/1050

I can see light shining through in between the GPU and HSF combo so I'm thinking that this card will need to be RMA'd. Or maybe I'll just pop the HSF off and fix it myself.

Also, after about 4-5 minutes I'm getting minor artifacts in ATITool with the stock O/C.

That sux man, I hate getting new hardware and having it poop straight out the box, reminds me of the day I got the 9700pro, I was all excited to unlock all the goodness and I bricked it at flashing lol


M

ClubIT has sent me out a new one today. I had to pay for it again, but they are covering all the shipping and will refund my original once I send it back. I thought I should send it back because it's winter now and generally about 10 F cooler in my computer room, but what really decided it was when Crysis locked up on me last night at the stock o/c.

One thing I've noticed about MSI is that they are ONLY offering O/C cards for the new 8800s (GT and GTS 512), so I'm betting that they aren't binning good chips for O/C.

Hopefully the next card will be better...

while I was writing this ATI artifact scanner errored out like 15 times at stock o/c of 730/1825/972. :frown:

Edit: the temp when it's failing is a paltry 65C so I'm sure it's defective.

 

[nib95]

I'm at 775/1825/2120 at the moment. Fully stable after hours of Crysis. Gainward Bliss model, 60% fans.

I'm sure I could push it further. Point is, do I really even need to?

 

[Hauk]

Originally posted by: shabby
Alright i settled at 750/1850/2200 with my gts, fan at 70% and 62c under load. Im suprised how well the stock fan cools

You're at the card's sweet spot. Not too shabby. :thumbsup:

ArchAngel777: where can you set so it changes the fan speeds depending on gpu temps?

Hope you don't mind OP... It's a multi-step process, creating a fan profile. Here's a nice guide.

 

[Hauk]

Originally posted by: nib95
I'm at 775/1825/2120 at the moment. Fully stable after hours of Crysis. Gainward Bliss model, 60% fans.

I'm sure I could push it further. Point is, do I really even need to?

I miss Gainward! I wish that model was available in US.
I say no, that's a great OC and hits the performance/stability mark..

 

[iluv2fly]

I posted this in the *** NVIDIA 8800GT OVERCLOCK *** thread. So I did a copy and past for you guys to.

I never manage to get a hold of a 8800GT (G92) so I bought a 8800GTS (G92) instead.

I had fun playing with it and made some comparisons. The GTS is suppose to be little faster with its 128 shader processors instead of 112. Cording to the reviews that I have read its not much of a difference.

But there are other differences. 3 phase power, better cooling and I think Nvidia has modified the voltage on the card. My overclock results are almost identical to 8800GT cards that has been Volt moded.

I modified my GTS speed to match the Vanilla GT. Here are some comparisons:


Intel E4300 @ 3300mhz

EVGA 8800GTS Max OC @811/1949/2002 = 12133 3dmark06

EVGA 8800GTS Default @670/1674/1944 = 11603 3dmark06

EVGA 8800GT Default @600/1500/1800 = 11052 3dmark06


I also ran the same tests at

E4300 default speed 1800mhz.

EVGA 8800GTS Max OC @811/1949/2002 = 7788 3dmark06

EVGA 8800GTS Default @670/1674/1944 = 7610 3dmark06

EVGA 8800GT Default @600/1500/1800 = 7531 3dmark06



- As you can see there is not much difference from the slowest clocked 8800GT to a maxed out 8800GTS.

- The CPU speed makes a huge difference.

- If you are planning on buying a 8800GT volt mod and swap the fan, then you might be better of buying a 8800GTS card to begin with.

- If you are not going to vmod or swap out the heatsink then the cheapest 8800GT card will do great. Lots of performance small price tag

 

[mlahatte]

You guys using stock fan? or aftermarket? Which aftermarket fan should one get? Arctic Cooling Accelero S1? And whats best 8800gt to get for OC'ing?

 

[iluv2fly]

This thread is for the GTS version. If you are looking for a GT thread try.

*** NVIDIA 8800GT OVERCLOCK ***

http://forums.anandtech.com/me...id=31&threadid=2112109

There are some recomendations for heatsinks to.

 

[mlahatte]

Originally posted by: iluv2fly
This thread is for the GTS version. If you are looking for a GT thread try.

*** NVIDIA 8800GT OVERCLOCK ***

http://forums.anandtech.com/me...id=31&threadid=2112109

There are some recomendations for heatsinks to.

Oops.. thx

 

[johanh13]

I got the eVGA 8800GTS 512 (670/972 stock). Sorry guys, I did not run the benchmark you asked for... However, I was able to run the Crysis GPU_Bench (64bit) in Vista x64. I used all medium settings at 1920x1200 with no AA. On loop 2 I got 44.91FPS and on loop 3 I got 44.96FPS average. The rest of my hardware: DX38BT w/e6750, 2GB of Corsair DHX PC3-10600 RAM, all running stock speeds...

I used NVIDIA control panel to adjust the GPU and memory to 760/1080 and left the fan @ stock speeds (auto). I ran the benchmark four times in a row, non-stop and got 80° Celsius and ZERO artifacts...

 

[BakaTsuchiro]

cant wait for mine to arrive on friday

 

[njdevilsfan87]

792/1900/1950 fan speed 55% load temp 65C.

This is without artifacting in ATi Tool. 800MHz core gives me a yellow dot here and there, as does 1944 on the shader. I haven't seen how far the memory goes yet.

 

[bamacre]

I got an eVGA 8800 GTS and installed ATItool, but I get an error when trying to use it...

"The Kernel Mode Driver does not seem to be running A device driver is required for communication with your video hardware."

Tried the newest, and the previous versions. Nada. Tried "run as admin," and nada. Does it have problems with Vista 64bit?

Any other good apps that I can use to try to OC my card?