Those people are reporting sub 10 degrees reduction. That's completely reasonable. First comment said 8C. As I said, anyone claiming 20+ degrees reduction... I do not believe. 8C? Yeah, that's almost exactly what I expect from switching to Kryonaut paste. That's what you'd get on a CPU switching from stock to kryonaut.
https://www.reddit.com/r/Amd/comments/cr2dw9/pasting_my_reference_5700_xt_matches_the_red/ Another guy who did the Gamers Nexus mod today, getting max temps of 75C under load. I must admit, they're all quite consistent results.
Anyone claiming to reduce heat by 20 degrees immediately gives me pause for concern about either the manufactor quality or their experience. Are AMD cards so utterly crap that their thermal solution is so poorly applied they allow for 20 degrees change just by a minor tinker? I doubt this very much. But I guess AMD could be utterly useless in their fabrication, maybe. I'm going to ignore these anecdotal forum posts until there are more, I've read enough youtube comment sections to know to believe literally nothing spoken.
People on the Gamersnexus video are getting fine results, one of the most upvoted comments in the comment section: ' This is no joke. I just did this mod on my XFX RX 5700 XT, and it's like a new card. Using Heaven Benchmark at the extreme preset at 2160p, before the mods I was running at about 78-80 C core and 82-85 C memory on a custom fan curve.... After these mods I was easily able to push the power limit to +50% (using the exact items listed below), and I was getting 64-66 C core and 68-70 C memory on the same fan curve (running ~50% speed now), and the core was now running consistently around 1990mhz' So he got an OC and maxes out at 66C core with stock cooler. A great result, and there's loads others all over the net if you'd care to look. Gamers Nexus themself says it's an easy fix.
Bit Tech has no indication of starting temp, you've just made an assumption. As for OC3d? No one else agrees with this review's temperatures for the reference model. You want to be believed? Back it up with other legit reviews. You've managed to scour the internet and find less reputable sources, that's how the internet works. If you look hard enough, you find what you want. I'm sorry but I have to go on a mini rant here. This is pretty crazy man, just here me out and don't take this too harshly... What is this with hunting down no name youtubers. You say 'Not an Apple Fan' is a 'famous youtuber'. You have to be kidding, right? Here's his channel man. https://www.youtube.com/channel/UColGq9X_Fi9LedYSK6ZfrkQ He's got 13k subscribers. That's youtube famous??????? His 5700xt video has 12k views, his mod you are talking about has 9.6k views. Looking at his video's, he only reviews AMD products, creates videos about how 'Intel is dead' and how 'NVIDIA should be scared'. I feel the only reason you mentioned 'Not an Apple Fan' is because he is claiming his card is running at 76C on FireStrike. I've never heard of this man before today. Have you honestly heard of this man before you bought your 5700 XT?