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*** NVIDIA 8800GT OVERCLOCK ***

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Originally posted by: Shaq
Have you tried ATItool? It is a little more sensitive than 3DMark06. If it won't pass that for a few minutes it won't be stable in games. Great OC you got. Can you not push the memory any higher? The 3Dmarks went down after that last run?
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I used to use it with my GTS and ya I agree the artifact tester is a lot more intensive than most other tests, and even games. I just try to avoid using too many bloat/tools so I've stuck with RT once they released a working version for G80.

I haven't pushed the memory since it never yielded as much gain on my GTS but since the GT's bandwidth is lower with the 256-bit bus it might be worth pushing the memory more. I'll try pushing the memory a little higher and seeing how it works out. And yeah, the last few runs have yielded lower scores than the high at 730MHz. 3DMark will have some fluctuation, but usually within +/- 400 marks or so.
 
Looking forward to your final clocks. There was one thread with a SC on water that got up to 792/1944/2000. I may sell my XFX and get a SC. LOL Plus I would be eligible for step-up to the new G92. ATItool is really good for testing the shader clock. I haven't had a crash from it being too high, but ATItool will show that it is artifacting, so it could be too high and you wouldn't know it.
 
756MHz did end up giving me Delta errors with ATItool, so I dropped it back down to 729MHz and going on 7 minutes now with no errors. Core temps up to 75C @ 50% fan speed. Gonna try playing with the shader/memory clocks for a bit and stick with 729MHz core. What are you running your fan at and what are your temps?
 
Originally posted by: chizow
756MHz did end up giving me Delta errors with ATItool, so I dropped it back down to 729MHz and going on 7 minutes now with no errors. Core temps up to 75C @ 50% fan speed. Gonna try playing with the shader/memory clocks for a bit and stick with 729MHz core. What are you running your fan at and what are your temps?
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Does it feel any faster than your GTS ?

 
I am a bit confused with ATI TOOL. Do you try scan for artifacts and if the clock restarts that means that it found errors?
 
I have a loud PC so I run it at 70%. I have cracked 70C a couple of times, but mostly at about 68C. I need to swap out my ultra panaflo for a high version for the q6600. I'm wondering if that's why your 3DMark score went down? Artifacting might slow it down somehow.

Yes the clock will restart and it will play a sound and display an error message. You can see the artifacts on the screen as well.
 
720/1750/2050 for 13mins on ATItool EVGA SC stock 650/1900 on stock air. Had to unlink my shaders at 1750 to get core higher. Running 169.02's, overclocking with Riva 2.06b.

Also, can anyone set a minimum value on their fans and still have auto fan control or just a fixed fan speed in rivatuner?
 
You can set separate 2d/3d clocks. The 8800GT doesn't have separate clocks co I'm wondering if that will work. That's what I did with my 7800 but it had separate clocks. Check the Rivatuner FAQ and see if it can be done. Either that or flash the BIOS.

There is a review on the SSC versus the GTX or Ultra(can't remember) at Motherboards.org.
 
Originally posted by: Shaq
I have a loud PC so I run it at 70%. I have cracked 70C a couple of times, but mostly at about 68C. I need to swap out my ultra panaflo for a high version for the q6600. I'm wondering if that's why your 3DMark score went down? Artifacting might slow it down somehow.

Yes the clock will restart and it will play a sound and display an error message. You can see the artifacts on the screen as well.
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! Damn you can stand 70%?

I found the 8800GT fan to be louder at the minimum settings than the 7800GT (it stands out in my case) but the sound doesn't get much louder from 29 to 45%, which is pretty good, whereas the XFX 7800GT fan you could hear at 40% at a pretty significant level.

On other news, I only managed 8400 3DMark06 score with my 4400+ with the MSI OC 8800GT, LOL. My CPU is quite sad apparently. So I managed about 150 more pts than the 8800GTS 320MB Fata1lty. As they say, "I am CPU limited."
 
I guess I can block part of the noise out. It is a few feet away though. The distracting part is the whine at about 85% so I set it lower. It looks like Thermalright has a new HR-03 for the 8800GT. You might want to try that if it is too noisy.

What is with the window duct? Do you have any pics? I wanted to try that this winter without making the whole room cold. If you did it right it could add 10% to the OC. Poor man's water cooling. LOL My PC is right near the window. I thought of getting some fans and building one out of PVC.
 
Ive done it before and it works very nice for my cpu. Gonna try it tonight and will post some pics. It used to be close to the window so now the longer duct is gonna affect how much cold air gets their unless I use an extremely noisy Delta fan to pull the cold air in.
 
running my eVGA SC at 700/2000 with ntune. Going to dled Rivatuner to mess with the shader clock a bit.
 
I have an eVGA SuperClocked 8800GT. Running at 702/1728/1000 with zero problems. Core temp is somewhat alarming at 76 C under load.

Anyone know what the core danger level is?


Edit: I am now running at 700/1750/1025 at about 70C with a monster fan setting (90%ish). Seems stable.

This is a monster card...
 
Originally posted by: Deleted member 4644
I have an eVGA SuperClocked 8800GT. Running at 702/1728/1000 with zero problems. Core temp is somewhat alarming at 76 C under load.

Anyone know what the core danger level is?


Edit: I am now running at 700/1750/1025 at about 70C with a monster fan setting (90%ish). Seems stable.

This is a monster card...
Click to expand...

I saw jonnyguru, a renowned power supply expert, say that his contacts told him manufacturers had issues with 2000+ ram dying after a few weeks' use, to keep it below that. As far as core, sky's the limit, whatever your cooling can handle... some have made it upward of 760 on stock, and we're already seeing some results of 800+ pop up on water/high-end aircooling.
 
The card definitely runs hot though, it's probably 60F/15C in my room right now, and the card idles at 140F/60C. My old 7800GT OC idled around 114F/46C in my case. Damn this card is gonna make my PC into a stove =P
 
Originally posted by: Astrallite
The card definitely runs hot though, it's probably 60F/15C in my room right now, and the card idles at 140F/60C. My old 7800GT OC idled around 114F/46C in my case. Damn this card is gonna make my PC into a stove =P
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No wonder you bought a 8800GT. You're trying to heat the whole house with it! 60? Turn up the fan speed, open the side of your case and enjoy discounted heating courtesy of Nvidia. 😛 (BTU rating is yet to be determined).
 
Mine idles at 48C but load went to 77C yesterday at 29% so I decided to crank the fan to 75% and right now at 710/1753/975 I am stock at 66ºC load. I think that should be enough to give me a nice OC but if I need to go with a 100% fan...do you think it will kill the fan to early?
I dont understand why Nvidia select such a low fan speed at 29%....trying to avoid complaints about noise maybe? I dont care since my Delta fans will not let me hear any difference from the video card from 29% to 100%! 🙂 Still havent tried the window air duct mod. 🙂
 
Originally posted by: SniperDaws
Originally posted by: chizow
756MHz did end up giving me Delta errors with ATItool, so I dropped it back down to 729MHz and going on 7 minutes now with no errors. Core temps up to 75C @ 50% fan speed. Gonna try playing with the shader/memory clocks for a bit and stick with 729MHz core. What are you running your fan at and what are your temps?
Click to expand...

Does it feel any faster than your GTS ?
Click to expand...
Kinda.....

In areas/situations I never really saw any slowdown anyways, I can definitely see the difference in FPS (only via FPS monitoring), but in laggy/crowded situations the FPS still plummet. I've only really run LOTRO (new update so been very busy raiding etc.) and my FPS in Raid situations is around 20 FPS minimum. With the GTS it could hit as low as 14 FPS at times. This is with Ultra High settings at 1920. Still playable frames in LOTRO, but not for FPS titles. So overall I'd say it feels faster, but nothing earth-shattering like going from a previous generation card to a G80. At this point I'm not even sure a GTX would.

There's a few titles I have that show bigger differences in benchmarks so I'll try and make some comparisons this weekend along with 169.04 GTS comparisons with RT OCs. As of right now though, not really impressed with the GT's performance scaling while OC'd. After looking over some of the other benchmarks (600MHz vs. OC'd GT variants), it seems the GT doesn't scale nearly as well as the GTS/GTX. Not sure if its the fewer ROPs, bandwidth/bus, or texture memory causing the bottleneck but hopefully the upgraded G92 GTS sheds more light on this (with potentially more ROPs, more RAM, more shaders).

Also tried bumping the memory up to 1050MHz and it ran ATITool without problems for 15-16 minutes but caused a lock-up after about 30 minutes of LOTRO. Bumped it back down to 1000MHz and ran for 6 hours without a hitch.
 
Originally posted by: SniperDaws
Originally posted by: chizow
756MHz did end up giving me Delta errors with ATItool, so I dropped it back down to 729MHz and going on 7 minutes now with no errors. Core temps up to 75C @ 50% fan speed. Gonna try playing with the shader/memory clocks for a bit and stick with 729MHz core. What are you running your fan at and what are your temps?
Click to expand...

Does it feel any faster than your GTS ?
Click to expand...
Kinda.....

In areas/situations I never really saw any slowdown anyways, I can definitely see the difference in FPS (only via FPS monitoring), but in laggy/crowded situations the FPS still plummet. I've only really run LOTRO (new update so been very busy raiding etc.) and my FPS in Raid situations is around 20 FPS minimum. With the GTS it could hit as low as 14 FPS at times. This is with Ultra High settings at 1920. Still playable frames in LOTRO, but not for FPS titles. So overall I'd say it feels faster, but nothing earth-shattering like going from a previous generation card to a G80. At this point I'm not even sure a GTX would.

There's a few titles I have that show bigger differences in benchmarks so I'll try and make some comparisons this weekend along with 169.04 GTS comparisons with RT OCs. As of right now though, not really impressed with the GT's performance scaling while OC'd. After looking over some of the other benchmarks (600MHz vs. OC'd GT variants), it seems the GT doesn't scale nearly as well as the GTS/GTX. Not sure if its the fewer ROPs, bandwidth/bus, or texture memory causing the bottleneck but hopefully the upgraded G92 GTS sheds more light on this (with potentially more ROPs, more RAM, more shaders).

Also tried bumping the memory up to 1050MHz and it ran ATITool without problems for 15-16 minutes but caused a lock-up after about 30 minutes of LOTRO. Bumped it back down to 1000MHz and ran for 6 hours without a hitch.
 
Well, mine seems to stop at 725 stable but tried 731 and got errors in 3 mins. Load temp was 67C and shader locked at 1753. I will try some benchies and perhaps use the window cooler but I wanted to have a regular idea of its OC capability at normal room temps before using the cold air from the outside.
I havent installed the PCI slot cooler I got yesterday since its blowing out and not in as I thought...it could help but I didnt feel a lot of strenght in its pulling to be honest.

Do you guys think running the fan at 100% could be bad?

PS from 701 to 725 I increased the avg fps in the Crysis benchmark from 30 to 33 at my very high settings...not bad a 3 fps increase at this levels.
 
Originally posted by: shaolin95
Do you guys think running the fan at 100% could be bad?
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Bad if you want to maintain your sanity! 😀

Seriously....I could never run the fan over 60%....just spoiled I guess from 120mm and the GTS stock fan I guess. But the GT fan at 100% is mind-numbingly loud.
 
I am seriously going to need an aftermarket cooler for this. Anything out yet?
 
Originally posted by: chizow
Originally posted by: shaolin95
Do you guys think running the fan at 100% could be bad?
Click to expand...

Bad if you want to maintain your sanity! 😀

Seriously....I could never run the fan over 60%....just spoiled I guess from 120mm and the GTS stock fan I guess. But the GT fan at 100% is mind-numbingly loud.
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As you can see from my sig, I can run that fan at 300% and not notice it since my ultra freaking loud DELTA fans wont allow me to hear it. lol
I will be more concerned about it when I build my quad core water cooled rig but then, I will probably water cool the GPU as well.
I just thought the fan could be too weak or something since Nvidia runs it at such a slow speed.
 
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