VGA Temperatures

I have a ATi Radeon X1900 XT. When playing Battlefield 2142, the game will sometimes minimize on its own. I didn't think much of it because they game has more bugs than the jungle. What got me a little worried is I was playing Wolfenstien Enemy Territory and as you may or may not know it doesn't require a lot to play. Well I was in the middle of a game and it kicked me to my desktop but went back into the game. I noticed that everything was a lot darker and my desktop was a lot brighter. I downloaded SysTool to check my video cards temperatures to see if anything was not normal and this is what I got:

ATI R580-GPU Temperature: 51 C
ATI R580-PCB Temperature: 64.6 C
ATI R580-Voltage Regulator Temperature: 69 C

If these are considered high temperatures, could someone tell me of a good VGA cooler for my video card?

Also, this doesn't have anything to do with my GPU, but I have an E6300 and the temperates read out:

CPU Core #0: 66 C
CPU Core #1: 66 C