MSI R7870 Hawk Overclocking issue

[Microwilli]

Hi there,

I have bought my 7870 hawk like 2 months ago and i now wanted to oc it because of crysis 3 ;) but the strange thing that i noticed was i couldnt get any stable clocks above the standart clockspeeds. For example: if i overclock my card from 1100 to 1200 mhz (voltage and power target turned right up) and its stable for an hour or two of gaming but then im just getting a bluescreen. The temps are 58 degrees without oc and 65 with oc so the temps are good. The powersupply also cant be the issue because i had 2 7870 for a day once so it has to be the card because the other one (just a referecnce his one) i could overclock to 1350mhz wich is really good without overvolting. So if hope someone can help me that would be great ^^

P.s. i hope that i didnt just lost at the sillicon lottery :/

Greets Willi Tiefel

[Dave :)]

Have you tried overclocking in increments? Slowly building up, so only increasing your clock speed by .5 /time until it's stable through increasing the voltage? What program are you using aswell?

[Microwilli]

im using msi afterburner and ive tried with other programms to and i ocd in 10 mhz steps.

oh and btw linus has the exact same issue and he doesnt know what to do either. :/

[Bramm17]

Try it in steps, different OC programme's, try it without volts and see how high it goes...

[Microwilli]

without overvolting its getting unstable at 1110 mhz O.o with power target on 20 % like 1150