Re:The fanless spinning heatsink: more efficient, and immune...
by ChuckMcM on Tuesday July 12, 2011 @02:29PM
(#2755846)
Great analysis. A couple of questions through.
So lets say their device can handle 60W when it is 38.7cm^2 (or a bit more than 1.5W per square cm. Now you want to cool a 150W processor. That means 100cm^2 of cooling surface. If I did the math right 100cm^2 is sqrt(100/pi) * 2 diameter circle. Or 12cm diameter circle. So lets call it a 4 3/4" diameter circle with one of these gizmos on it.
That isn't a huge stretch to imagine. I'm thinking a copper slug which sits on the processor and makes this 4.75" diameter 'landing pad' for their cooler. Doesn't work well if the processor isn't oriented horizontally though.
In data centers this might up reliability and density if the net solution was 'shorter' than the current passive sinks.
Re:The fanless spinning heatsink: more efficient, and immune...
by ZoFreX on Tuesday July 12, 2011 @04:08PM
(#2756302)
It's common in high-end CPU HSFs to mount the heatsink above the copper slug on the CPU, connected with heatpipes - a setup that would work well for a cooler of those dimensions.
So lets say their device can handle 60W when it is 38.7cm^2 (or a bit more than 1.5W per square cm. Now you want to cool a 150W processor. That means 100cm^2 of cooling surface. If I did the math right 100cm^2 is sqrt(100/pi) * 2 diameter circle. Or 12cm diameter circle. So lets call it a 4 3/4" diameter circle with one of these gizmos on it.
That isn't a huge stretch to imagine. I'm thinking a copper slug which sits on the processor and makes this 4.75" diameter 'landing pad' for their cooler. Doesn't work well if the processor isn't oriented horizontally though.
In data centers this might up reliability and density if the net solution was 'shorter' than the current passive sinks.