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Originally posted by bigben2k
Within the max 0.231, and the min 0.225, assuming an 80 Watt source, the temps could differ by 1/2 degree.
Bill has also refined his application method: your results will vary 
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He uses a 70watt source.
A little more info for the ones that are alergic to links.
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The MCW5000 was then mounted under carefully controlled conditions 10 times and it’s “C/W” determined under ‘standard conditions’ (defined as 70W applied heat load, 3.8lpm coolant flow rate at 25.0°C, and 10kgf applied compressive load across the TIM joint). The following results were obtained:
“C/W” mean = 0.229
“C/W” range = 0.006
“C/W” standard deviation = 2.06E-03
The data is consistent with a normal distribution: P= 0.89 where the normal distribution has a mean = 0.2286 and standard deviation = 2.25348E-03. The "C/W" distribution is shown below. 'Standard Error' bars are indicated to enable an estimate of the measurement uncertainty.
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Quote:
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The “C/W” was then determined with an applied heat load of 70W (about 100W per Radiate) under a range of flow rates from 1lpm to almost 13lpm.
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