[H]ard|OCP compares the cooling prowess of 4 heatsinks that will cost you less than $40.  Some, like the SCYTHE Shuriken Rev.B just are not up to the task of cooling a Core i7 while others like the Arctic Cooling Freezer 7 Pro Rev. 2 emulated the performance of the stock cooler.  The Cooler Master N520performed very well and still costs less than $40, but the old standby of the Thermalright CoGage Ture Spirit still remains the best value.

“Lots of CPU cooling to do? Not a lot of money? We take a look at three sub-$40 CPU air coolers and see what we get. If you are looking for a speedy build on a budget, maybe one of our somewhat under-the-radar coolers will help you out.”

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