02-08-2013, 11:07 PM
I was used HD7970 it was calculating fine 131K c/s till i used catalyst GPU overclock, my stock speed was 925Mhz, i tried to overclock to 1050Mhz, it was calculating on 149K c/s, i was run around 2 min, after that i putted my settings for default and he start run on 94 000 c/s. Games and other things works fine, but GPU doesn't calculating on 131K c/s anymore, even if i do overclock to 1125Mhz, max speed is 111K c/s. Do i must to send card back for warranty?