Originally Posted by grunion
I've never used 2, only 3 and 4.
Is 2 any thinner than 3 and 4?
MX-2 has about the same consistency as AS5. I haven't tried MX-4, but from what I remember about using MX-3 it was thicker than MX-2, but it has been awhile since I used it. I never saw enough difference in temps to justify the extra cost of MX-3 compared to MX-2.
One of the reasons I recommend MX-2 to AS5 users is it's so similar consistency wise that they don't have a problem applying it like they would with some of the other TIM like IC Diamond. Getting good results is as much about application as it is the actual TIM used. Once you get used to applying one type it can take quite a while to get used to applying one that is significantly different and get the same results they did with the one they are familiar with.