Ok, sounds alright then. Thanks. It's jumped a couple of degrees with the ti4200 I just bought plugged in. I don't know if this is an air circulation issue or my PSU not being strong enough. It's a 350 and the estimated requirements for the system are about 280, but the PSU isn't branded so it may not supplying that many watts. The voltages are slightly lower for each line - 3.15 instead of 3.3 etc, but the 12v line is higher than normal, but then it's like this without the GFX card plugged in. My system is reasonably stable but should I increase the voltages (if my PSU is capable)? Will this bring down my CPU temps a little?