I use OCCT because imho it generates the greatest stress for my Q6600 and is the first app to show any system instability. Furthermore I love the logging and plotting of data. Here are the initial results. That is a 10C decrease for loaded CPU with initial testing.
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Q6600@3.15Ghz|CNPS9500|P5WDH|4GbCrucial4-4-4-12|Sapphire 4850|OZC GameXtreme 700|XP64
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