AGP 7900GS overclock

[fobose]

I haven't overclocked a graphics card since my GF4 Ti4400, so not sure if I am doing this right. Anyway I've had my 7900GS a few months now and thought I would try overclocking it using coolbits.

Stock settings are 450 / 660 and max temp is 62c

I increased the mhz of the GPU by 10mhz at a time (and pressing the test changes button) till I got to 575mhz then I ran 3dmark 05 to make sure it was fine. I increased the memory the same as the GPU till I got to 785 and the "test changes" said my overclock was to much so I put it down to 775 and ran 3dmark 05 ok.

3d mark05 Scores:

Stock: 6497 (450/600 - 62c)
GPU OC: 6791 (575/600 - 68c)
GPU+MEM OC: 6858 (575/775 - 68c)

I didn't actually keep going on the GPU till it said my overclock was to high but is a 125mhz increase on the GPU pretty good? should I keep going more? Also is the extra 3d mark points really worth it?

<edit> something else I forgot to mention, in the "2D" options, the memory is set to my overclocked speed of 775, even when I hit "restore defaults" then go back on the 3D bit and raise it again and apply, it saves it in the 2D bit to - is this normal?

 

[Cyber-Mav]

125mhz is below average. most people get to 650mhz on the core
mine did 650 on the core but then the card died the standard 79 series death.

how long have you had your card?

 

[fobose]

Hi, thanks for the reply. I have had my card 3 months on the 27th this month. I might try mine on 600 then and see how it is on that - perhaps yours died because you overclocked it to much?

<edit> how old was yours before it died?

 

[Cyber-Mav]

died in under 1 day of use. died with the same symptons as all other 79 series failures show. deffo one card series to avoid.

 

[fobose]

Oh :O If a 79 series card is going to die, will it die instantly? - surely not all of them can be duds?

<edit> Just tried my GPU on 585 and it reported that my overclock was to high ahwell, 125mhz is better than nothing ;D

 

[fobose]

Sorry to revive this thread but WTF. I thought I would attempt increasing the clock speeds again as they was apparently low for my card, before I couldnt go above 575/775 but now I have them at 595/795 - is the "test changes" thing in coolbits random or something? (played CNC for a few hours and it seems stable at these clocks too).