So I have a couple 1070 FTW's in SLI and I'm going to be putting in the thermal pads there offering for the VRM's when they arrive. I figured while I have it off I might as well replace the TIM as well. So am I correct in assuming that these heat sinks look aluminum because there actually nickle plated copper? The features section on the cards say it has a copper contact area, also copper pipes. You can't use this stuff on aluminum but apparently nickle is fine.
 
I also have some MX4 laying around so I'll probably stick with that to be safe if I don't get an official response, or a very strong consensus maybe...would be an expensive mistake to make.
 
This stuff worked wonders when I delided my 3570k. I'd love to see what it can do for these cards.

Nickle plated copper? Yep.

I've read through some TIM reviews and the Grizzly Kryonaut is one of the best non-conductive formulas. I personally use ICdiamond because I like it's durability and near 0 breakdown and it's ratings show it's only 2*C hotter under high pressure air and liquid cooling compared to the Liquid Ultra. I have some Liquid Ultra unused I considered trying but I am too concerned about making a mistake and it shorting something out. If you're comfortable with applying it, you'll get the best cooling from the Ultra, but for me I'd rather have slightly higher temps than risk frying something because all of my systems components aren't cheap...and I also have my air condition unit vented into my case which drops the temps to about 20*C idle and 45*C under load so it really doesn't matter for me.
here's a link for the TIM comparisons:
http://www.tomshardware.c...igh-Pressure,3364.html
 
 
 
 
 

I've had Liquid Ultra dry out in less than a year on two different rigs and two different video cards.
 
I'd highly recommend going with a different TIM, such as ICDiamond or Kryonaut.

Use thermal grizzly kryonaut. Safer and lower temps!