I'm running my setup with a 423 P4 1.7Ghz and I have the Thermaltake Indigo Orb as my HSF. At idle the system is right around 43C and under load it goes up to 53C. That seems just a little too hot to me, I'm wondering if theres anything I can do to cool the chip down? I have a 120mm fan on the top of my comp, and one fan in the front of the case. It's a smaller ATX case so there isn't much room for fans. Any suggestions?