That's VERY good. That's considered the "standard" of gaming last generation, and is still very capable today.
- 32 Bit OS? Half of your RAM literally isn't being used. At all. Get that up to 64-bit, please.
- What is your PSU? Cooler?
I just have standard fans, I really want to upgrade the cooling. I have a.... 650 wt PSU think.
I would have to wipe my 32 and reformat with a 64 bit wouldn't I? I do have the 64 laying around.
Since it has been randomly shutting down mid-game with no BSOD, I wanted to make sure it wasn't overheating. I think its the memory, I haven't tested it yet though.
Your temps are fine, your PSU should be fine.
You wont need to reformat going from 32 to 64; you'd need to completely reinstall Windows, but since your upgrading Windows, your old files will still intact and some register-less programs, but most programs are redownloadable, so everything should be fine. Actually, a reinstallation of Windows may help solve your problem.
Is this problem with any one specific game or several?