During gameplay, temp gets up to as high as 70C. I don't know about gfx temps, but that doesn't sound unreasonable. Idle, it sits around 36c.
Playing COD4, game froze for a few seconds, displaying a hue of rainbow colors. This happened about 3 times in the past hour. Occasionally, my monitor kinda goes all wonky for a second then back to normal. That's been going on for months and I thought my monitor was going bad since I've had it 6 years now. But maybe not.
I have a 2GB GTX 560 I bought last summer, so it's barely a year old. I keep my drivers up to date, so that can't be an issue if this has been going on for months now. (assuming the monitor issue is related)
I just did a driver update, new one just release this past week it appears. Oddly, the gpu temp jumped up from 40 to 55 during the install. Likely unrelated, but I don't know.