As I said, the last set of temperatures were using Arctic Cooling's ARCTIC MX1 thermal compound.  In order to do a more comparative test, however, I removed the heatsink, cleaned it off, and applied AS5.  Let's see if this makes any difference.  I'm hoping we see some improvements, because the Mine-Cooler returned system load temperatures of 43 degrees after 7 days in my system while running prime95.

With AS5, the idle start temps are the same as they were with the MX1 thermal compound.

Starting up Prime95, the CPU heats to 46 degrees.  This is a few degrees cooler (AS5 is known to give temperatures 2-3 degrees lower than most stock thermal greases) than the MX1.

After 24 hours of number crunching, let's look at the temp.  It's dropped a degree!

45 Degrees is an improvement, but still not as good as the Mine-Cooler tested earlier.

Here's a recap.  I created this spreadsheet to keep track of all the heatsinks tested on this system.  As we test more coolers, I'll add to the chart.

Overall the size and weight of the Freezer 7 Pro make it a good choice since it is not over 600g.  The heatsink is also guaranteed for 6 years, which is longer than most system lifetimes!  The fan is very quiet and does have a PWM signal line so that the motherboard can control the fan speed and further reduce noise.  I do wish that the heat pipes had been capped or at least finished with something other than a crimp and solder, especially since they did a nice job of making the rest of the cooler quite attractive.  While this model is only for Socket 775, there is a similar model available for AMD processors.

Thanks to Arctic Cooling for sending over this sample!