I have GD 900 on my GPU atm, repasted it a few months ago with it. 'also changed thermal pads'
My bro bought it sometime ago cause it was cheap and heard good things about it.
I think I've seen Bryan talking about it on TechYesCity and he liked/suggested it as a cheap alternative to MX 4.
So far the temps are all good, longevity is what I'm not sure about but it can't be worse than how the original factory paste looked like after 3 years.
We do have MX 4 around and been using it for years on our CPUs with no issues but I did not want to 'waste' it on my GPU in case I mess it up. 'I don't usually repaste GPUs, first time actually'
Yeah it's good stuff, possibly even underrated. I'm still using the first 30g tube I got in late-2019. My GTX1060 has been running it for about a year and it's still doing great.
One of my biggest complaints about common thermal pastes is that the small tubes are always running empty. That really sucks if you're doing CPU benchmarks and need to apply thermal paste many times. Bulk thermal paste is almost non-existent at retailers and on Ebay the definition of "bulk" is to buy a 20x or 50x lot of 1g tubes. It's so utterly dumb. A big 30g tube makes life so much better that I would pay good money to get one. And the fact that GD900 is so cheap and is so effective, for me personally it's a no-brainer.