Comment my thoughts on liquid metal cooling (Score 1) 494
I had thought of this along with a friend/colleague last year and ended up concerned about specific heat.
I had calculated that a gallium/Indium ratio of 75.5%/24.5% which has a known melting point of 15.7C and density of 6.35 would have a specific Heat of .08 cal/g-C (at 25C) and thermal conductivity of 0.11 cal/s-cm-C. Water has a specific Heat value of 1.00! But it's thermal conductivity is 2 logs lower at 0.015. All in all, I decided that they cancel themselves out. The elctromagnetic motor may be the key to MOVING the heat and giving one that 1/2 log or better difference in cooling.
BTW...It's a little annoying to see people questioning the usefulness of such a device and questioning whether it is "overkill". It is not overkill as the "typical" high-end cpu generates 100W of power in an area the size of your pinky finger's nail. by definition, the more transistors they pack...the higher it will go. Water and fans and aluminum/copper heatsinks just aren't going to cut it during this next log increase in transistor density.
Also, nickel should tolerate the mixture fairly well. At least long enough to for today's throw-away computer society. I don't know about you guys but I swap my setup every 8 months! :(
my first two cents on slashdot.
I had calculated that a gallium/Indium ratio of 75.5%/24.5% which has a known melting point of 15.7C and density of 6.35 would have a specific Heat of
BTW...It's a little annoying to see people questioning the usefulness of such a device and questioning whether it is "overkill". It is not overkill as the "typical" high-end cpu generates 100W of power in an area the size of your pinky finger's nail. by definition, the more transistors they pack...the higher it will go. Water and fans and aluminum/copper heatsinks just aren't going to cut it during this next log increase in transistor density.
Also, nickel should tolerate the mixture fairly well. At least long enough to for today's throw-away computer society. I don't know about you guys but I swap my setup every 8 months!
my first two cents on slashdot.
