The MX-4 compound comes in a typically silver-themed and form-fitted plastic package. It contains specs, test results, and features.
We will be testing on the Arctic Cooling Freezer XTREME on a Phenom X4 9600 Black Edition.
For idle testing, we booted up the system, allowed the CPU to stabilized at below 2% usage, and then tested for 10 minutes, and we used PCWizard and CPU-Z to record the CPU temperatures.
For our load tests, we used Prime95 to stress the CPU to 100%, and let it run that way for one hour, and then use PCWizard and CPU-Z to record the temperatures.
The MX-4 paste made considerable imporvements in the idle temperatures, with idle temps 4.5°C lower than when MX-2 was used! This is quite a large margin of improvement.
MX-4 also performed favorably under load, being a full 1.5°C lower than the MX-2 paste. This doesn't seem like a lot in pure magnitude, but as a percentage, it's quite large, and would definitely help when it comes to squeezing stability out of a hot overclocked CPU, and can ultimately make all the difference on how high you can push your clock. Being as well-received as the MX-2 thermal paste is, the MX-4 paste should then be highly recommended as a thermal paste option!