I am now entering a stage where I feel confident enough to over clock my pc( after much research). I currently have a HP A6090.uk Intel core duo E6700 running at 2.66Ghz with 3gig of ram. I have a changed the power supply to 700 watt and dumped a XFX geforce 8800gt xxx apha dog to play with. I haven't changed any of the fans as the cpu never get above 50 under load and the gpu never goes above 70. The system is very stable but what I would like to know is what speed would people recommand ( I have seen them running at 3.5 and above) with the current cooling system or should I upgrade the cooling system? then over clock? Any thoughts?