I got the Corsair Cooling Hydro Series H50 to overclock my CPU. The guide I went to got me up to 4ghz (EVGA X58 Overclocking Guide). I start the computer and the idle temp is 60. Everything shows that it is 4gz. I run prime 95 and once it goes to 100% load the temp flies to 90-100 then back down to 60 so I thought it was ok but when I look closely instead at running at 4ghz it is running at the 2.6 default. I checked coretemp and cpuid and both say it is running at 2.6 I stop and exit prime 95 and coretemp/cpuid jumps back up to showing 4210ghz. I run Grand theft auto 4 and everything is running great at 60 fps. I looked at the temps and they were around 85-90. I drive around some and it hits back to 40fps. I look at the temps and it says 60 but the core is back down to 2.6. I exit the game and wait a few minutes and the ghz go back up to 4. What is going on? Did I install the fan wrong? I went through it step by step. My first OC it shows this before any tests or running games : http://i20.photobucket.com/albums/b212/xinside/4ghz.jpg it shows this after running a game or prime95 : http://i20.photobucket.com/albums/b212/xinside/2ghz.jpg I have a 750 watt power supply if that helps any.