PC Apex has a new review up on some new thermal pastes from AI Tech and Tuniq which are compared to Arctic Silver 5 and some generic thermal grease. Here is a snip from the review:
"I decided to test each product on my main PC, a pretty hot overclocked Core 2 Duo. In the testing, each thermal paste was applied carefully and the CPU and waterblock were thoroughly cleaned between applications. To measure CPU idle temperatures, the machine was cold booted (30 mins between tests) and left another 30 minutes once into Windows to settle. Load temps were recorded after a cold boot (again, 30 mins between tests) and 30 mins of stress testing on both cores, performed using the Folding@Home application set to 100% CPU usage. According to my trusty desk temperature monitor, ambient temperature during the evening of testing remained consistant at 19c, occasionally fluctuating to 18c at times. Using this procedure, I was confident of some accurate results."