Viper's Lair has posted a comparison review between the Thermalright SK-6+ against the SK-7

Here the SK7 takes a decent lead, of about 2ºC over the next closest rival, the Zalaman CNPS 3100 heatsink, which has a larger surface area due to its 'flower' design. The SK7 at medium speed also beats the SK6+ with the high speed Thermaltake fan, which is a interesting point, as this 'apples to apples' comparison shows the SK7 is a better performer when most other things are equal.

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