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bobo5195 · 09-15-2008, 10:14 AM

Sorry for the general tardiness of posting.

I would disagree with the assertion that CPUS themselves have to designed for it. Heat spreaders already add a nice layer of packaging. Agreed it is risky to an extent but no means impossible.

The central question is if performance is there. With a big pump I believe it is. (As it happens me and my supervisor on my current project are looking at this, he is betting on Lamina flow heat exchangers. Note that he considers turbulence to be wasteful in heat sink designs from all his experience)

Swifttech storm idea is good, will perform crapish though as the storm is laid out for confined jet impingement not what we are talking about and some of the other geometry is not what you would want.

A flat plate with laser or similar holes mounted less than 1mm off the surface and sized so it won’t deflect is perfect. Thinking holes of the order 0.1mm or less.

Cheap to make in small to medium quantise me thinks. Besides has the added bling of having to know what paterns suits your CPU better.

* would add this is all drunken flu medicine inspired ideas. Based on the idea that 4 half diameter jets are better at cooling with lower flow than 1 and optimum stand off is about 5 diameters from the surface is memory serves. The question then becomes how small can we go.

Give it 5 years (probably a bit more) and watercooling will be popular enough to do this as our CPU/GPU chips will be straining against barriers.

09-15-2008, 10:14 AM	#8
bobo5195 Cooling Savant Join Date: Aug 2005 Location: uk Posts: 400	Re: Got a cool design? Sorry for the general tardiness of posting. I would disagree with the assertion that CPUS themselves have to designed for it. Heat spreaders already add a nice layer of packaging. Agreed it is risky to an extent but no means impossible. The central question is if performance is there. With a big pump I believe it is. (As it happens me and my supervisor on my current project are looking at this, he is betting on Lamina flow heat exchangers. Note that he considers turbulence to be wasteful in heat sink designs from all his experience) Swifttech storm idea is good, will perform crapish though as the storm is laid out for confined jet impingement not what we are talking about and some of the other geometry is not what you would want. A flat plate with laser or similar holes mounted less than 1mm off the surface and sized so it won’t deflect is perfect. Thinking holes of the order 0.1mm or less. Cheap to make in small to medium quantise me thinks. Besides has the added bling of having to know what paterns suits your CPU better. * would add this is all drunken flu medicine inspired ideas. Based on the idea that 4 half diameter jets are better at cooling with lower flow than 1 and optimum stand off is about 5 diameters from the surface is memory serves. The question then becomes how small can we go. Give it 5 years (probably a bit more) and watercooling will be popular enough to do this as our CPU/GPU chips will be straining against barriers.