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7970 OC stories...

got clocked at 1300 now under water and 1600 on the memory maxing out at 42 degress playing bf3 after 4 hours looking at getting a second :D
 
dave_beast said:
I leave mine running through Heaven a few times and read the logs from GPUz, afaik, Furmark should be avoided as it unduly stresses the GPU.
Click to expand...

is that not like -not running IntelBurnTest ? no stresstest really unduly stresses a component just is a thereotical worst case.

what sort of temps do these cards get to in Furmark ?
 
mm its the quickest tool I can find to prove my gpu clock is stable - I've never had the gpu pass furmark and it not be stable in the likes of Heaven etc

just as Intelburntest - is not pointless either - I use it to quickly find whether my CPU clock is stable or not

does it stress the cpu more than any known game ? yes - is it still a useful overclock test? yes

if I can run Furmark for 20 minutes on a heavily overclocked GTX480 (pulling >300W) I'm sure any card should pass it if stable
 
Got my Asus 7970 in and so far appears to be stable at 1125/1575 on stock voltage (1.175v), that's with power control untouched at 0%.
 
Up to 1173/1575 now on stock volts (1.175v). :)

Edit; needed a bump to 1.212v to get 1202/1575 stable.
 
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Gone are the days when CCC had the "auto-overclock" where it worked out the overclock settings for you. My brother in law used this with his 57xx model when I was round there yesterday. Thems were the days :rolleyes:
 
mecca said:
VTX3D 7970
stock voltage 1.112

mine does 1200 core at stock volts easily and more.
Click to expand...

Really? That sounds incredibly low. :eek:

Mine needs 1.21v for 1200mhz. Not amazing but not too bad either it would seem.

ASIC is 71%, for what it's worth.
 
My Asic on one is 61.2% (1.174v) :O and I can get that to 1150/1675 at 1.208 core and 1.612 mem and my other one is 84.8% (1.049v) but it can only go 1125/1675 at 1.152 core and 1.608 mem.

From what I've gathered on numerous forums is that the lower asic/higher volt cards seem to overclock better than the higher asic/lower voltage ones, obviously doesn't apply to everyone though!
 
Been doing some more clocking and benching with mine today. So far it seems stable at 1250mhz with 1.25v, but I can't get it stable any higher even if I go to 1.3v. Shame, but 1.25GHz seems pretty good. :)
 
Mine will clock upto 1200 core and 1600 ram at default volts 1.10 something. Not tried any higher and its clocked as per my sig right now.

edit: asic of 73.2
 
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Hi i'm getting my 7950 today and was wondering how you know what voltage to use? i mean what happens if you up the core clock without enough voltage? does it BSOD?
 
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