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overclocking 8800GTS (G80 640mb)

post #1 of 13
Thread Starter 
Hey guys has anyone had any experiance overclocking the 8800GTS (g80) its the XFX XXX if that helps i have got it running at 575 but was looking for 600 but it wont run stable any help would be awsome
The ShagNastic
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The ShagNastic
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post #2 of 13
it should. Mine run @ 660/2000 Just make sure all programs are closed. Also how do you know its unstable. also please make sure your fan speed is set to 100%
post #3 of 13
Thread Starter 
when i oc it the comp blue screens after a little while have you changed any voltages??
also what have you used to overclock it??
The ShagNastic
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The ShagNastic
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post #4 of 13
You should be able to get 600 core easy on a G80. I had mine to 630/2060 at stock voltage. The only way to increase voltage is with a voltage mod. If you get a BSOD at only 600 MHz, it could be that the card just doesn't OC well.

RivaTuner and ATI Tool are the best programs for OCing GPUs imo.
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Brick Sh*thouse
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post #5 of 13
Thread Starter 
ok thanks qjust one question by 2060 do youi mean the mem speed atitool shows ot is that 1030 on ati tool because it wont let me go past 1500 sorry to be a pain its my first time ocing a graphics card
The ShagNastic
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The ShagNastic
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post #6 of 13
That's right, Shag. The memory clock equals 2000 when you set it at 1000 in your settings. Please don't ever try to run ANY card at a 1500 Mem clock. I'm green myself, but I'm pretty sure you'd ruin your card doing so. That would be a 3000 setting (1500x2). The core clock and shader clock numbers are not doubled tho'. My EVGA version of your card is running at 651(core)1000(x2=2000 mem)and 1525(shader) with no voltage boost. I hope you can get more out of it, but what I've read in here is to bump your clocks slowly (core +3 at a time and mem +5 at a time) then use a benchmark program (I use 3DMark06). If it runs without relics (jjagged lines or blocks of color that don't belong) bump again and test again. When relics appear down clock to a stable setting and that is your max speed. Don't run it with relics long (Escape button will abort 3DMark!) or you may do damage to your card.
Good luck and play safe
Aging Gracefully
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Aging Gracefully
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post #7 of 13
the highest i had my card at was 710 core clock and 1100 mem clock. i was able to run ati's artifact test for about 20 minutes before artifacts popped up.i good OC would be at around 650 core and 1050 mem. make sure you have proper cooling or increase the fan speed so it doesnt overheat. it is getting hotter now and my PC is hating it
MIVE
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MIVE
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post #8 of 13
yeah i wass amazed at how high this thing can go. i have msi 8800 gts oc, stock 575. i've oc'd to 720 core and 1800+ mem with no gaming problems
    
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post #9 of 13
Thread Starter 
cool thanks for all the help guys i will try after i get home from work (got to fund the habit some how) ill let you know what i can get
The ShagNastic
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The ShagNastic
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post #10 of 13
My 320MB version runs at 680/1750/2000 C,S,M stable
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Quicky
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