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| quote: | Originally posted by whiskers
btw, does anyone have a link that explains to me WHY exactly cpus get hot when you overclock them to like 8 ghz? |
WEEELLLL... *makes cup of tea*
hehe 
it is actually rather simple: The problem is caused by capacitance in the junctions.
Since the chips are digital there are only two legitimate values: 0 and 1. Of course in your chip this would translate to 0V or 1.8V (or whatever your core voltage is). Each time any value in your chip changes from a 0 to a 1 or vice versa, you need to 'instantly' drive the voltage from 0 to 1.8V or the other way around.
If you junction was a logic 0, 0V, and needs to be a logic 1 now, you need to provide enough charge to 'fill' the capacitor.
When you need to move charge, you create a current. As you remember from your physics class P (power dissipated) = I^2 * R (square of current times resistance). If you dissipate power, you generate heat, just like your electric stove would.
As you increase the chip speed, you decrease the time, which is alloted for the charge to fill or discharge the capacitance. Therefore, you need higher currents at higher speeds. Which translates into a higher power consumption and power dissipation.
hope that helps, if it is NOT clear, I will try to find you an article in english.. the last one I had was in hardcopy and in german 
Greg
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I see your 4 Crushs and raise you 3 As The Rush Comes. - Yan from PvD's first summerstage event in '03
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