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pHaestus · 10-06-2003, 11:43 PM

I will say it again (what is this 4 times now)

I DO NOT BELIEVE THAT THE P4 IHS EVENLY SPREADS THE HEAT THROUGHOUT THE TOP OF THE HEATSPREADER.

DO think about this. How thick is the IHS? If you built a waterblock baseplate of that thickness, would you spread the heat out to a 40mmx40mm region? NO YOU WOULD NOT. Now let's think about this again. Now let's blue sky. Say you DID manage somehow to spread the heat out pretty evenly over the entire surface of the chip. This I assume you are predicting would result in lower CPU temperatures. WHY THEN DO TEMPS GO MARKEDLY DOWN WHEN YOU REMOVE THE IHS?

I am capitalizing for emphasis not to be rude. A TEC is a very different animal from a 10x10mm heat source with a thin cap on it.

And testing with CPUs is not going to get you where you want to go if your goal is serious waterblock performance numbers and ranking. FWIW, my "yesterday's" AMD CPU testing is far more accurate than anything end users can do on Athlon 64s or P4s. Too many pins to deal with the soldering I am afraid and all mobos with integrated diode readers. Intel doesn't even give you access to the hot areas with their diode.

10-06-2003, 11:43 PM	#32
pHaestus Big Player Making Big Money Join Date: Aug 2001 Location: irc.lostgeek.com #procooling.com Posts: 4,782	I will say it again (what is this 4 times now) I DO NOT BELIEVE THAT THE P4 IHS EVENLY SPREADS THE HEAT THROUGHOUT THE TOP OF THE HEATSPREADER. DO think about this. How thick is the IHS? If you built a waterblock baseplate of that thickness, would you spread the heat out to a 40mmx40mm region? NO YOU WOULD NOT. Now let's think about this again. Now let's blue sky. Say you DID manage somehow to spread the heat out pretty evenly over the entire surface of the chip. This I assume you are predicting would result in lower CPU temperatures. WHY THEN DO TEMPS GO MARKEDLY DOWN WHEN YOU REMOVE THE IHS? I am capitalizing for emphasis not to be rude. A TEC is a very different animal from a 10x10mm heat source with a thin cap on it. And testing with CPUs is not going to get you where you want to go if your goal is serious waterblock performance numbers and ranking. FWIW, my "yesterday's" AMD CPU testing is far more accurate than anything end users can do on Athlon 64s or P4s. Too many pins to deal with the soldering I am afraid and all mobos with integrated diode readers. Intel doesn't even give you access to the hot areas with their diode.