Best 8800 GT overclocks

[papasmurf211]

Alright basically the point of this thread is for you to post your 8800 GT overclocked clock speeds Core/Shader/Mem and any modifications u may have done to achieve this. Im still currently working on mine.

 

[bildo123]

Currently I have it @ 720/1020 I ran 3Dmark06 stable, crash's during the battlescene on 1040 mem. I have a nice AC Accelero S2 with turbo modules so I'm gonna see how far my core can go. I saw a sig with someones at 720/1080 so I just tried to mirror that. But I believe I can push my core to maybe 740, which some people claim they have done.The most I've seen with my new cooling was 50C with the OC. So I believe I have some nice headroom to the point where the pure output would cause artifacting before heat would.

 

[nxcmp]

I have the 8800GT 512Mb Superclocked eVGA version. Its stock specs are GPU: 650, Shader: 1625, Memory: 950.
I was able to add 50mHz to GPU and 125mHz to sharer clocks. I did not need to adjust the Memory frequency. Although at the time the fan speed was to low to keep up (before the BIOS update by eVGA for better fan speed management) so I used RivaTuner 2.06 with 169.12 Display Driver (BETA at the time) to manage the fan speed and overclock. I moved the fan speed from constant 25% to 75% and there was a slight noise increase (within an enclosed system). As for performance increase with Crysis, I received twice the amount of frames I got before (40+ Game Settings: Global Settings: High, DX10, 2xAA, 1024,768, benchmark_GPU text). As from a 3DMark06 score had increased by 377 points, 12283 -> 12660. After 700mHz GPU it became unstable, I didn't want to up the memory frequency do to reports that near and above 1000mHz causes failure within a 1 weeks time in some cases. Idle and Max Temps, Before OC, 61C - 90C, After OC 52C - 71C

CPU: http://img403.imageshack.us/img403/3808/cpu1ig9.jpg
GPU: http://img140.imageshack.us/img140/5050/gpu1sy8.jpg (Display Drive has changed since)

Note: These score are never constant for every redo test.
SM 2.0 Score 5578 Marks - > 5862 Marks
SM 3.0 Score 5286 Marks - > 5452 Marks
CPU Score 3189 Marks - > 3176 Marks

Note: Specs of the computer used for this test.
Vista Home Premium 32bit (Score: 5.7 - Hard Disk)
Motherboard: ASUS P5B Deluxe
CPU: Core 2 Duo E6850 3.0gHz -> OC'd 3.6gHz AIR
RAM: A-DATA 2x1Gb DDR2 800 PC2-6400, Patriot 2x512Mb DDR2 800 PC2-6400 (All 3Gig registers)
Video Card: eVGA 8800 GT SC 512Mb (OC see above)
Hard Disk: Seagate 400Gb SATA2 3.0 7400RPM ST3400620AS
Power Supply: Antec 650W Rail System

 

[bildo123]

Okay I found my max without any artifacts using AtiTool, seems as though the most I can go without artifacts is about 710/1040. But the difference from 700/975 is minor. Only scored me roughly 200 more 3DMark06 points. During the testing the core seemed to cap at about 57C after about 15 minutes of scanning artifacts. I'll probbobly stick with the 700/975 since I believe it will lower heat/stress a bit. And from 710/1040 there probbobly in reality is 1/2FPS difference. I thought I would have recieved a lot more from the 65Mhz memory OC on top of the OC. From 900 to 975 brought in nice performance gains. But it seems to fade off after that.

 

[nxcmp]

Oh never mind its BFG 8800 GT OC, forgot to check your rig stats.

Hey "bildo123" I thought you would include this information in your next post, but you didn't so I will request it. Could you please tell us who is the Manufacturer, and what version of their 8800 GTs that you have in your machine for achieving these number with?

Thanks

 

[bildo123]

That would be the BFG 8800GT OC. So technically I'm supposed to be at 620/900. But before I even messed around, RivaTuner saw it as 600/900 default stock settings. And I'm sorry but I didnt mention my cooling which plays a massive role in my temps. I have an ArcticCooling Accelero S2 w/turbo module. My stock cooler would artifact bad/crash if I tried to get anything remote to a OC. Only real reason I went for Aftermarket is because the price was to good to pass up, the had it with instant $5 off bringing it down to $17+ ship, turbo module was $5 off $8 +ship. So I said the hell with it, plus I love doin this kind of stuff. I just wish there was a job that paid good that lets me do this.

 

[nxcmp]

You know there is a group who does things like that for a living, oh what was their name, ...,.... toms hardware maybe ? but yes I'm a big overclocker myself. One of my beter projects was getting a Pentium D 805 up to 4.1gHz, so Over a full 1.5Gig

 

[papasmurf211]

well i got my EVGA 8800 GT stock oced to 735/1802/990. Im looking for an OC program for vista 64, previous ocing was done in xp.

 

[dragoncyber]

I just ran 3dmark06 stable with an SLI'd 8800GT setup. Oc'd to 730/1040 the score with my quad core q6600 @ 3.2ghz and this SLI configuration was 17,549.

 

[bildo123]

I just ran 3dmark06 stable with an SLI'd 8800GT setup. Oc'd to 730/1040 the score with my quad core q6600 @ 3.2ghz and this SLI configuration was 17,549.

I was curious are you also using the stock cooling with stock fans? I'm just wondering because I thought the extra cooling would be able to push it further, at least a little more on the core. Yes the cooling is DEAD silent but if your using the stocks HSF then that seems as though it was the only benefit I gained. Which is why I bought the cheapest solution available. (Which cools pretty damn well for cheap, If with the ATItool scan It never goes over 60 and idles between 38~40, ambient being 20C) Well I guess it was that and also running at stock settings, even those this IS a BFG OC version, was 600/1800 and it hit 80's during atiscan/gaming. So I dunno, I dont think I was going to get anything remote to a OC without aftermarket cooling, as least safely and long lasting.

 

[papasmurf211]

any of you guys know a good soft volt mod or easy pencil volt mod? I really wanna push more out of this 8800 GT i think my mem even at 990 is unstable. btw Q6600 3.6ghz 2 gb ddr2 1006 5-5-5-12, asus p5k deluxe 8800 gt 735/1802/9900 vista 32 3dmark06 14,454

 

[hughyhunter]

I was able to push my EVGA 8800GT superclocked (stock 650/950) to 730/1000 with stock cooler at 100% during 3dmark06. My score:
SM 2.0 4162
SM 3.0 4850
CPU 2131
Overall 9561

I have a 4600 X2 o'cd to 2.95

I think my scores would be in 5k if I had faster proc!

How do I o'c the shader? I cant do that through nvidia control panel.

 

[GodGunsAndGlory]

nVidia Control Panel does it like Rivatuner can and links the core clock to the shader clock so your good.

 

[dragoncyber]

I was curious are you also using the stock cooling with stock fans? I'm just wondering because I thought the extra cooling would be able to push it further, at least a little more on the core. Yes the cooling is DEAD silent but if your using the stocks HSF then that seems as though it was the only benefit I gained. Which is why I bought the cheapest solution available. (Which cools pretty damn well for cheap, If with the ATItool scan It never goes over 60 and idles between 38~40, ambient being 20C) Well I guess it was that and also running at stock settings, even those this IS a BFG OC version, was 600/1800 and it hit 80's during atiscan/gaming. So I dunno, I dont think I was going to get anything remote to a OC without aftermarket cooling, as least safely and long lasting.

Bildo in response to your questions: I use A Zalman 9700 all coppper heat sink and fan with 6 heat pipes, for my Q6600 @ 3.2 ghz. and I have discovered that this is the highest stable clock speed that I can aquire on air cooling, to keep running on the regular at this speed. The Zalman 9700 is one of the highest rated Air coolers on the market. It keeps my temps (pushing full load) at 51 degress celsius @ 3.2 GHz and on 42 Deg Celsius when Idle.

I USE the stock coolers on the 8800GT's and turn the fan speed up to 100% during benchmarking while I have them clocked at 730/1040 each. As an added safety net I mounted (2) 80mm Antec Red led fans side by side (flush) pushing their combined Air flow into the space between the SLI'd cards, this decreases the temps on both cards by at least 5-7 degrees depending on usage, and looks like a twin after burner at full thrust!! ..it's Nice.

I also use (3) 120mm Antec red led fans to keep good air circulating throughout my case, I use one to specifically cool my three WesternDigital 250 Gb HDDs in my striped array. And the Other 2 are mounted on top of each other Standing, at the bottom front of my case pushing there combined air right across the mother board and graphics cards.

 

[hughyhunter]

i'm currently overclocking my cpu to as high as it will go... during 3dmark it crashes about half way through... sometimes during the cpu test and others during the gpu test. I have it clocked at 730/1000. I'm wondering if since you guys are getting it up to 730/1040 if it might not have anything to do with the gpu settings. If I run everything at lower speeds it doesnt crash. I'm just trying to break 10,000 right now... and I really want to accomplish this feat. So i've tried every combination of gpu settings... it passed once at around 9960 with clocks at 729/995 and my cpu running at 2.9-

 

[bildo123]

I guess then for the most part my aftermarket 'cooling solution' is more of a silencing solution then...Considering you are getting 730/1040 as I can only get 710/1040 with no artifacting. BTW do you have your shader unlocked and at a different speed? Ohwell, even if it comes down to just silencing solution it does it damn good, and keeps it quite 'cold'.

 

[bildo123]

Breaking news that isnt that important!

And now for the explanation... I was able to Volt mod my 8800GT with a 1Kohm Pot. I adjusted my idle desktop voltage to 1.26V Under load it went between 1.29~1.3V. This enabled me to increase my core to 770, shader to 1900, and my memory at 999.

This gave me a whopping and I mean WHOPPING 124 points over my previous 700/1000 OC in 3DMark06. THATS IT ALL THAT STRESS, and constant image of my $240 card turning into a brick for a crappy 124 points. This volt mod is total buppkis,crap,waste of time. Not only that even with my Accelero S2 and turbo module when I scanned for artifacts my temp rose over 90C! Absolutely not worth anything, not even the $2 and change I spent on the pot.

In other words, if you are able to achieve 700 core 1000 mem just stick with that, it "ain't" gonna get much better. I'm actually pretty confident I'll just remove the entire mod and go back to what I had before. This was a total bummer.

 

[hughyhunter]

Thanks for experimenting for us... I think i'll keep my 700/1000 o'c

 

[goodie]

BFG OC 625/1566/900 standard
oc to 700/1750/950 with thermalright HR-03GT
never goes over 46 degrees

 

[papasmurf211]

well im not gonna hard volt mod but i cant really achieve stable clocks any higher than 735/1840/985.. Ive got these clocks in the bios and its been stable. ATItool for 20 min no artifacts. Does heat up quite a bit am on stock cooler (75c). i guess i got crappy mem but im pretty happy with my core and shader. With Q6600 at 3.6 i get 14,554 06.

 

[bildo123]

well im not gonna hard volt mod but i cant really achieve stable clocks any higher than 735/1840/985.. Ive got these clocks in the bios and its been stable. ATItool for 20 min no artifacts. Does heat up quite a bit am on stock cooler (75c). i guess i got crappy mem but im pretty happy with my core and shader. With Q6600 at 3.6 i get 14,554 06.

Dont worry about the memory, I believe I'm really lucky for the 1Ghz stable OC. The real world performance gain of 15Mhz more wouldnt be noticable, what is cool is your core and shader are much higher than mine. I believe my shader even crashed at 1800 after awhile of heavy gaming. so I'm at 700/1750/1000 - 24/7

Almost forgot, I did hard volt mod mine and did get impressive OC numbers in RivaTuner but benchmarks (3dmark06/doom3) showed almost no improvement. By impressive, I mean 770/1925/1000. I only scored about 125 point extra in 3dmark06. I ran the doom3 timedemo and again no fps increase. (okay maybe 1fps but it actually scored lower than the orginal OC the first run around, I ran it 3 times and wrote the score each time.) So the volt mod should not be bothered with.

 

[DJ898]

I just have a quick question about my 3dmarks score. My Q6600 is running at 3.6ghz and my 8800GT is at 721/1802/979 (core/shader/memory/) with two caviar se16 raided 0, 4 gb of 800 mhz 4-4-4-12 ram amd an asus maximus formula. However my 3dmarks score is a bit low (I think) 13080 (Sm2 5335, sm3 5212 and cpu 5008). Could this be because of vista 64 or what? any ideas?

 

[Valtiel]

Your score is fine.

 

[goodie]

I just have a quick question about my 3dmarks score. My Q6600 is running at 3.6ghz and my 8800GT is at 721/1802/979 (core/shader/memory/) with two caviar se16 raided 0, 4 gb of 800 mhz 4-4-4-12 ram amd an asus maximus formula. However my 3dmarks score is a bit low (I think) 13080 (Sm2 5335, sm3 5212 and cpu 5008). Could this be because of vista 64 or what? any ideas?

does seem a bit low, i can get 13670 with Q6600 3.24, 8800GT 700/1750/950 2gb ddr2 800 cas4 all on same board "max form" im using vista X86 so maybe it is vista X64?
is your overclock stable? are you putting enough volts through CPU?

 

[DJ898]

Its stable. @ Valtiel the V10 looks awesome!