Yes, that is the solution for hot CPUs. I actually plan to get a 2.8GHz Prescott with 400MHz bus and "hotwire" the PLL to force it to 533MHz, yielding 3.73GHz. Or I might get a Pentium D 805 and turbo it to 4GHz or above.
The TXV can handle up to 250w of heatload, so it is Britney-ready. I'll probably need to replace the compressor and condenser if I were to actually use it with a Britney, though. The one installed is 1/6HP. 1/4HP or greater is recommended for a Britney.
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Originally Posted by A friend of mine who has a Linux kernel named after his girlfriend.
If I was VirtualBox, I could load my virtualization module into Hannah and boot up another kernel in the same address space.
Yes, that is the solution for hot CPUs. I actually plan to get a 2.8GHz Prescott with 400MHz bus and "hotwire" the PLL to force it to 533MHz, yielding 3.73GHz. Or I might get a Pentium D 805 and turbo it to 4GHz or above.
The TXV can handle up to 250w of heatload, so it is Britney-ready. I'll probably need to replace the compressor and condenser if I were to actually use it with a Britney, though. The one installed is 1/6HP. 1/4HP or greater is recommended for a Britney.
you could get the 805 to around 4.5ghz if you really wanted to, unlss your mobo prevented such a huge oc. also if you do, it is good to cool the back side of the mobo. it sounds crazy, but it will reduc temps some...
If I cool the back, I'll have to add some more refrigerant lineset and somehow prevent the motherboard from shorting against the suction line. I think that is too much work. There is just enough space for insulation as-is. If I add the suction line, there will be less room for insulation.
Besides, with the CPU cooled to -30C, I really doubt there's any need to cool the back.
BTW, with CPUs getting hotter and hotter, expect to see this technology in every high-end PC in the future.
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Originally Posted by A friend of mine who has a Linux kernel named after his girlfriend.
If I was VirtualBox, I could load my virtualization module into Hannah and boot up another kernel in the same address space.
I actually think lower voltage parts will take care of the higher speed parts we want.
There was a big reduction in heat going from a 5V to 3.3V.
I'm not sure what is next, but for compact devices (like laptops, UMPCs, PDAs, and phones) you can't have a big cooling system.
There are also high temp parts for hotter environments (like inside cars, trains, planes) that work under extremes.
I think the liquid cooled will stay in the highest end units, industrial units, and self builders like yourselves.
A big problem with low voltage is thermal-electrical (Johnson-Nyquist) noise. By cooling the CPU down, the voltage can be reduced as the noise is also reduced. A phase change cooler is only about $50-$70 if mass produced. It's easy to keep the costs under $400 when building one even if the cost includes tools. Someone once managed to make a $100 CPU outperform a $1000 CPU by adding less than $300 of tools and parts - better performance for less than half the price.
BTW, the fastest Britney CPUs already require refrigerant cooling to work.
Quote:
Is that a heat exchanger! Water or glycol?
It uses tetrafluoroethane.
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Originally Posted by A friend of mine who has a Linux kernel named after his girlfriend.
If I was VirtualBox, I could load my virtualization module into Hannah and boot up another kernel in the same address space.
For CPU's, smaller circuits and speed now are limited by the heat output using current materials and technology. Duel corewas the temp solution till the implementing of the newest technology, nano. Then smaller and faster starts all over again!
B. - Seems to me that you'd have to worry about condensation in that case...
3. - I've heard about this "britney cpu" over and over..... What the hell is it??
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B. - Seems to me that you'd have to worry about condensation in that case...
3. - I've heard about this "britney cpu" over and over..... What the hell is it??
I'll have to insulate the motherboard from condensation. That's easy though.
As for the Britney CPU, it's a specialized CPU designed for servers and very fast workstations. It uses an "ultrascalar" RISC architecture and therefore contains lots of transistors. Because of that, it runs very hot (the fastest one puts out over 200w of heat!) and requires refrigerant cooling to work.
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Originally Posted by A friend of mine who has a Linux kernel named after his girlfriend.
If I was VirtualBox, I could load my virtualization module into Hannah and boot up another kernel in the same address space.
I'll have to insulate the motherboard from condensation. That's easy though.
As for the Britney CPU, it's a specialized CPU designed for servers and very fast workstations. It uses an "ultrascalar" RISC architecture and therefore contains lots of transistors. Because of that, it runs very hot (the fastest one puts out over 200w of heat!) and requires refrigerant cooling to work.
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