Hi what temp does your GPU get to? What motherboard have you used? Can you run speedfan on it? Could you check it? Speedfan can throttle your case fans up and down depending on your gfx and cpu temps. This is what I am trying to achieve. I am looking for an MB that speedfan works on, that I can fit a passively cooled gfx card to and is MATX for my antec nsk2400, as per
this thread. Those temps sound fine to me by the way. My old P4 socket 478 (I think) used to run up to 70 degrees under load, and is still going. I know this is comparing apples with oranges, but 51 degrees is not that hot for a CPU.