Thermal Grizzly Duronaut - 6 Gram - Enhanced Durability & High Performance Thermal Paste - for Maximum Thermal Conductivity While Overclocking CPU/GPU/PS4/PS5/Xbox

The product is great. It's extremely thick and was more difficult to apply than cheaper brands, but I used the included applicators to spread it on and it is working great. I have a great connection between my cooler and the CPU and it is keeping my ryzen 9 5950x nice and cool. I highly recommend this product for high end processors.

I have bought thermal grizzly's PTM7950 (PhaseSheet I think they call it) in the past for repasting GPUs. While I did like the product, I decided to give Duronaut a go mainly because it was a fair bit cheaper considering the amount of coverage you get. That and my tube of MX4 from gods knows how long ago was starting to separate and I needed a standby thermal paste. The Duronaut is far thicker than standard thermal paste that most people are used to. Really quite thick; I would estimate kind of peanut butter thickness (though I hardly know since I don't like peanuts). There's a bit of a learning curve to spreading the thermal compound over a die. Thermal grizzly have a video on youtube on how to spread it that had some good advice in that regard. If you try to spread it too fast it tends to detach from the die or create patchy coverage. You kind of have to apply what looks like a lot more thermal paste than necessary to spread it out. I found the special spatula they give you helps a lot in controlling the spreading, and you have to go pretty slow. I used this thermal paste to repaste my GPU--which had concerning hotspot temperatures--and a friend's laptop which sorely needed repasting. I've been running the repaste on my GPU for a couple of weeks now and it's holding up great with no signs of rapid deterioration or temps increasing.

Thermal Grizzly Duronaut was easy to apply on my Ryzen 9 9900X using the included spatula. I spread a thin, even layer—not transparent, but controlled—and it behaved exactly as expected. During installation I had a moment where the AIO block made contact and lifted straight off due to a mounting alignment issue, but the paste held up perfectly and didn’t affect performance at all. Across all of my testing, including sustained AVX workloads, the CPU stayed cool and stable and 9900X held around 62 °C. In real‑world workloads like batch video encodes and large software builds, I typically see temperatures in the mid to high 70s, which is completely normal for the 9900X and still well within comfortable thermal limits. Duronaut clearly provides excellent thermal transfer and consistency under both synthetic and real‑world workloads.

One of the best thermal paste, used it on my Nerdminer Octaxe and both the fans are now running on low RPM compared to before. moreover the factory paste was so bad that couple of my ASICs were shutting down after running for like 15 mins due to overheating and that problem is solved now. Thanks Thermal Grizzly!

I’ve used several thermal pastes over the years, and the Thermal Grizzly Duronaut definitely performs at the top of the pack. After applying it to my i9-based gaming PC, I noticed CPU temps dropped by about 2–3 °C under heavy load compared to my previous paste (MX-6). It’s non-conductive, spreads cleanly once it warms up, and seems to hold temps steady even after long gaming or rendering sessions. The 6-gram tube gives you plenty of paste for multiple builds, which makes it a good long-term buy. My only complaint is that it’s a little thicker than expected — not the easiest to spread evenly unless you warm it slightly or use a spreader. Also, while the performance is excellent, the difference might be small if you’re not pushing your system hard. Overall, this is a great choice for enthusiasts or anyone who wants high-end, reliable thermal performance. It’s a bit pricey, but you really do get the quality and consistency Thermal Grizzly is known for.

I did some maintenance on my build and replaced the old Corsair thermal compound with this stuff. My 5950x can pull up to 205w. I don't go to far past 80c on my older Corsair aio. It's a 240 aio. I don't remember the exact model. Even though it's not designed for direct die cooling it did work in my zephyrus g14 2023 model on the CPU and gpu. The paste lasted a month before breaking down and becoming watery over the die and mostly pumped out around the die. Lasted long enough until I can get some PTM7950. I would recommend this stuff for whatever has a integrated heat spreader. I would not buy this specifically to use in laptops or air cooled gpus unless you already have some of this stuff around and you need it in a pinch. It's thick but a little easier to apply then the old kryonaut extreme.

This is top notch thermal paste. I have used it for every PC I’ve built the last few years, and every repaste of every GPU and console I’ve ever done. The downside to it is how difficult it is to spread, even with the supplied spreaders. Fully recommend in anything not requiring Liquid Metal.

Warm it up to apply to components- it's a little dense at rom temp and doesn't spread very well. Otherwise excellent product- performs spectacularly.