Hi there Kevin thanks a lot for good article.
I think you might want to see this. I did peltier/watercooling experiment. Here are some of my temp resaults. When I am testing my peltiers I use 6mm coldplate (pure copper) And I flush my waterblock (pure copper also) with tap water @7-9c.
System:AbitKT7-R Duron 700 300w Aopen PSU. All temps are under full load(one hour), no spot readings.
Temp resaults:
Air Cooling:Coolermaster hsf cpu=46c @1,94v/1000mhz (case open)
Water cooling: Tap water @9c cpu=20c @2,15v/1100mhz
Water cooling: water@24c cpu=33c @2,15v/1100mhz
Single peltier 68w water@9c cooled: cpu=13c @1,7v/800mhz
Single Peltier 68w water@9c cooled:cpu=30c @1,98v/936mhz
Dual Peltiers 2x68w water@9 cooled:cpu=9c @1,7v/800mhz
Dual Peltiers 2x68w water@9 cooled:cpu=23c @1,98v/1050mhz
Dual Peltiers 2x68w water@9 cooled:cpu=32c @2,15v/1100mhz
Peltiers were run at 10-16v side by side,on a separate BIG 35A psu.. 12v gave best 'cooling'.
I think these resaults are in phase with your readings. You might get lower temps by using bigger cooler and higher voltage for your peltiers, but you will not see any dramatic temp droppings with 156w unit.
Even a regular watercooling outperforms my 136w dual peltier setup, the reason is that they do not transfer enough heat. Only at 700mhz and 1.65v did I see any condensing on my coldplate, And at 1100mhz 2.10v my coldplate was a lot hotter than my waterblock. Bigger peltiers are needed for a Duron at this voltage/speed! In my opinion you could possibly get below 0c by using at least two 156w units..Hmm then you need some good psu I guess (26A@12V)
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