I recently recieved a 300-Watt PSU with a 120mm fan on the back of it (opposite of the grill and the outlet). At first was like, what the f**k, but after I installed it and booted into windows, I realized that it lowered my overclocked p3-600 to 841 CPU temp 10 degrees Celcius. Just thought I recommend it. I ended up not even having to mod my case.
