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Nicepants42 · 11-29-2004, 03:35 PM

I've found Cathar's post Here to be very informative - although I'm not 100% up to speed on the math.

I eyeballed this pumps performance curve, used Cathar's math, and came up with the following:

~4.7lpm flow rate, 0.174 C/W at the block, 0.0435 C/W at the radiator. As for heat added to the water, I pulled 5W right out of my ass and crunched the numbers:

17.4C rise from the CPU, 105*0.0435 = ~4.6C rise from the pump, to give a total of 22.0C delta between the CPU die and ambient.

This would mean that this pump is at best slightly better than a Eheim 1250 in this situation (giving 0.1-0.2C for a pulling-out-of-ass factor).

Anyone want to have a more accurate crack at it?

11-29-2004, 03:35 PM	#152
Nicepants42 Cooling Neophyte Join Date: Sep 2004 Location: Beacon, NY Posts: 28	I've found Cathar's post Here to be very informative - although I'm not 100% up to speed on the math. I eyeballed this pumps performance curve, used Cathar's math, and came up with the following: ~4.7lpm flow rate, 0.174 C/W at the block, 0.0435 C/W at the radiator. As for heat added to the water, I pulled 5W right out of my ass and crunched the numbers: 17.4C rise from the CPU, 105*0.0435 = ~4.6C rise from the pump, to give a total of 22.0C delta between the CPU die and ambient. This would mean that this pump is at best slightly better than a Eheim 1250 in this situation (giving 0.1-0.2C for a pulling-out-of-ass factor). Anyone want to have a more accurate crack at it?