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Unread 02-09-2002, 09:16 PM   #31
immudium
Cooling Neophyte
 
Join Date: Jan 2002
Location: Salt Lake City, Utah
Posts: 13
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Hello again. It's been while since I've posted here and since I've been able to work on my water cooler. But also I've been waiting on a digital thermal probe I ordered from Frozencpu which finally came.

I might be better off starting a new thread on this one, but I had been wondering how well my Danger Den super cube radiator was performing and so now with this new thermal probe of mine, I'm attempting to find out.

Anyway, I moved the pump after the radiator so I wouldn't be adding heat to it. I then taped the probe to the silicone tubing just before the radiator intake and then again just after the radiator exhaust. My system had been running for an hour and the cpu was at idle. I left the probe on for 5-10 minutes before moving it:

Pre-Radiator - 41.5 C
Post-Radiator - 40.5 C
Post-Pump - 43.5 C
Ambient - 22.0 C

Ambient was measured both with the thermal probe and a traditional mercury based thermometer and they were within 1 degree of each other. Anyway, this doesn't seem right at all. I've read that water blocks favor high flow rate and radiators favor low flow rates unless you increase the volume of the radiator which is where I thought the Super Cuber would come into play for me. Therefore, I am a little stumped as to why I don't see more of a dramatic drop in temp from the radiator. Also I find it very odd that the "hose" temp, if you will, leaving the pump is actually higher than the hose temp entering the radiator. Once the water leaves the water block it travels about 16" to the radiator so maybe a lot of heat is disapated during that time.

Anyway, I've been known to do some dumb things in my time, but I'm pretty sure I at least got the flow direction right. It is an Eheim 1250, water comes in the side opposite the power cord and leaves out the top, pretty straight forward. I also need to mention that I don't know what I was smoking when I posted earlier, but I am not using two 7200 rpm 120mm fans, they are 2700 rpm 120mm fans I ripped out of an old 4X Pentium Pro server, so I apologize for my overstatement. But two of these, one on the front and one on the back should be providing adequate airflow.

Anway, any ideas on what I should target to get my water temps closer to ambient? I've tried finding reviews and real world data on the super cube, but for some reason they are either amazingly hard to find or non-existent. Would I have better luck switching to a heater core? Or how about adding another (albeit expensive solution) Super cube in series or parallel?

As always, thanks for an advice or input!
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