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maxSaleen · 11-03-2005, 11:08 AM

I believe that they suggested running two pumps. Thus it would go:

Rad1->Pump1->Block Inlet 1->Block Oulet 1->Reservior1->Rad1

Rad2->Pump2->Block Inlet 2->Block Oulet 2->Reservior2->Rad2

Or something like that. They suggested this simply to deal with the massive amounts of heat being dumped by their HUGE pelts and the CPU.

I can't explain why MOSFETs don't function properly at low temps, as I'm not an electrical engineer, but I do know this from some of the projects over on the VR forums. One case that comes to mind was when someone wanted to LN2 cool an Opteron when they first came out (Grace maybe? Or was it a Japanese guy? Probably the later). They kept running into problems with board supplying the wrong voltage. It turned out that the MOSFETs had to be insulated in order for the board to function properly at such low temps.

I'd love to see a "substantial" overclock on RAM gained by going sub-ambient. 10mhz doesn't cut it (probably only 5% of actual speed). I could see lower temps helping by reducing the electrical resistance through the RAM, essentially increasing the voltage. There are more effective ways of doing this (volatage mods, etc.).

11-03-2005, 11:08 AM	#19
maxSaleen Cooling Savant Join Date: Dec 2004 Location: Orlando, Florida Posts: 383	I believe that they suggested running two pumps. Thus it would go: Rad1->Pump1->Block Inlet 1->Block Oulet 1->Reservior1->Rad1 Rad2->Pump2->Block Inlet 2->Block Oulet 2->Reservior2->Rad2 Or something like that. They suggested this simply to deal with the massive amounts of heat being dumped by their HUGE pelts and the CPU. I can't explain why MOSFETs don't function properly at low temps, as I'm not an electrical engineer, but I do know this from some of the projects over on the VR forums. One case that comes to mind was when someone wanted to LN2 cool an Opteron when they first came out (Grace maybe? Or was it a Japanese guy? Probably the later). They kept running into problems with board supplying the wrong voltage. It turned out that the MOSFETs had to be insulated in order for the board to function properly at such low temps. I'd love to see a "substantial" overclock on RAM gained by going sub-ambient. 10mhz doesn't cut it (probably only 5% of actual speed). I could see lower temps helping by reducing the electrical resistance through the RAM, essentially increasing the voltage. There are more effective ways of doing this (volatage mods, etc.).