Well, I ran into a problem with two of my Chili's.  I installed ARCTIC Accelero Twin Turbo II units on all the boards but two of them dropped down to 22Gh/s at 67C.

One of the two was in service for weeks before the problem and the other ran fine for two days before it happened.

I used "Fujipoly Ultra Extreme System Builder Thermal Pad - Full Sheet - 200 x 150 x 0.5 - Thermal Conductivity 17.0 W/mK" and the Arctic back plate to prevent flexing.

Should I try using the Arctic paste on these two instead?

-BrimStone