Am 29.07.2014 13:12, schrieb Le_Forgeron:
> On 29/07/2014 12:58, scott wrote:
>> The other interesting I just found out is that my GPU uses about 3x the
>> power as my CPU, yet the CPU heatsink and fan is bigger? How does that
>> work?
>
> CPU usually throttle down once in the 80°C range. GPU are able to go to
> 105+°C (and might throttle down too once there).
> The air flow on the cpu heatsink is rather loose, whereas the air flow
> on the gpu heatsing is a tunnel.
> Once you put these two facts together, you have on one side a
> dissipation of 120W, and and the other side one of 250W.
> (From air at 30°C, delta Temperature is 40 vs 65, more than 50%
> effective alone)

Plus, the CPU fan also needs to provide airflow for various mainboard 
components, such as memory and voltage dividers.

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