If we talk about value, the Nanotherm comes in 2g syringes and the AS2 comes in 3g syringes. At retail prices, that works out to be US$2.48/gram for the Nanotherm and US$2.83/gram. So it seems that the new and improved blue stuff wins this portion of the contest.
Now, if we talk performance, we see a tie. The AS2 compound managed to post a half degree lower temperature at idle, but the Nanotherm took that same half degree right back during the 3dMark2001 run.
Something else to consider is the density of the two compounds. With proper amounts of the each of the respective compounds applied to the surfaces, the Nanotherm product will cover more surface area. Both recommend a .003 inch coating for proper performance, but the blue covers 30.5 square inches of surface area compared to the 18 square inches provided by the AS2. Seems that the blue stuff takes this portion of the test as well.
Bottom lineˇK If youˇ¦re looking for an effective TIM (and who isnˇ¦t), and donˇ¦t want to spend more than necessary, then get yourself some Nanotherm Compound. While it doesnˇ¦t have the pretty silver color, it does manage to be as effective as Arctic Silver II while bringing in a lower cost to the user. And besides, who is going to be looking between the processor and the heatsink anyway?
As effective as Arctic Silver II
Texture could be smoother
Rating ˇV 9/10