It's been a while since I read about TIM differences but at that time noctua NH-1 was pretty good so I bought a few tubes and that's what I have used in both cpus and gpus. I've seen huge gains but that is likely primarily due to sloppy stock TIM application.
I guess I like Noctua coolers and love their fans so considering that their TIM was amongst the better ones I bought it.
Yeah, forgot I used that one with my X99. Good temps.
Seems to be a good alternative but I doubt it covers the VRAM or VRM very well. You'd probably need to toss some small low profile sinks on those w/sticky thermal pads.
Any suggestion? Or should I go for some full size block from EKWB or something like that?