Quote from: bspurloc on June 11, 2013, 12:00:01 AM

Quote from: CWO on June 10, 2013, 09:41:24 PM

Quote from: bspurloc on June 10, 2013, 09:17:32 PM

Is there any tricks to cut down the Video Driver from crashing. Besides lower GPU Mhz.
I am asking because I have 3 machines identical in all ways brand new win7 installs 64bit, Sapphire 7870xt cards.
I can run 2 no issues at 1200Mhz GPU mining 525 mh/s while the 3rd one the video driver seems to crash above 1145Mhz after several hours.
The 2 at 1200 run at 71C and 76C while the driver crashing one runs at 75C.

Did you look around for the version 12.8 drivers? Those seem to be the best to mine with. In any case, go to device manager, uninstall the driver, make sure when you click Uninstall, you check "Delete driver software for this device". Once uninstalled, try reinstalling (Preferably version 12.8 ).

I am using 13.1 drivers I tried 13.2 but they cards mine like 10% slower so I am not going to install anything newer than 13.1... does 12.8 even have drivers for a 7870?

When I tried the installer for 12.8 for my 7790, it said there was no compatible hardware found but going through the device manager and pointing to the folder where the installer extracted, it installed successfully and has been running stable since. When I had the latest driver installed, I had about 275 mh/s for bitcoin and 33 kh/s for litecoin. After going to 12.8, I get 308 mh/s and 220 kh/s.

CWO

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