CPU gets hotter while on Screensaver

[aggiec05]

So I am not quite understanding why, but whenever my computer sits idle for awhile and goes to the screensaver its temp rises to ~70C, When I am gaming or anything else on it generally sits around 50-55 at the highest 60. I know this is still hot, but at the current place I am living my computer sits in a cubby where all the heat sits. I am working a better solution.

Specs:
CPU: 2.4C overclocked to 2.89
CPU Fan: XP-120 w/ Nexus Fan
in a Lian-Li 60 Case - 2X80 Vantec Stealths up front, 1 7v modded Vantec Stealth in the rear

I am probably going to un mod the fan in the rear while it is in this setup that is not prime for cooling, but are there any other ideas?

 

[the@ntipop]

Some screensaves use the CPU to draw them. For example, a lot of those crazy windows default ones that bounce polygons all over your screen will use the CPU in order to calculate and draw them.