$105 OBO shipped OEM 5870 1gb--reference cooler, with backplate. Looks pretty nice.... wish I could keep it. But not currently using so it would be better for someone to realize its full potential rather than it sitting around in my basement.
This card was used to mine btc back in summer of 2013 for about 5 months. Didn't use for a good 2 to 3 months due to bitcoin not being profitable.
The issue: In the last two days my system has been randomly shutting down and then rebooting. There are no errors or BSOD's, just straight power off and restart. After this starts happening the time between restarts can be just a few minutes or even during post.
Data:There are no "Windows shut down unexpectedly" messages or other errors. The CPU, GPU temps are normal.
My installation of Windows 8.1 is constantly being extremely sluggish due to constant high disk usage. Doing anything, whether it be saving a file, opening a webpage, or closing programs, is very slow. My disk usage sometimes stays at %100 for quite a while. I have run a chkdsk with the /r option, and no errors were reported, so the disk appears to be in good condition.