Finding An Affordable Heatsink For A High Wattage CPU In A 4U Chassis

The Intel Core i7 temperature on Linux with results for idling and various workloads:

As you can see from the result, the open air performance between the Arctic Freezer i11 and Scythe Mugen Max was practically the same. When moving the system with the Freezer i11 into the 4U chassis with lid on, the temperature (with only 120mm intake fan) was just nominally warmer. It's been running this way for a few days now and haven't run into any thermal problems with the Core i7 5960X being so close to the HSF's limit.

You can see more of the temperature data and system information via this OpenBenchmarking.org result file. Besides cooling well, the Freezer i11 also ran very quiet.

If you're interested in the Arctic Freezer i11 for cooling any relatively modern Intel system, you can find it for just over $20 USD at Amazon.com. Overall, I'm quite happy with the heatsink given its price and able to cool effectively while just squeezing into a 4U chassis.