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New Thermal Grizzly Duronaut looks pretty impressive in this review.

xentr_thread_starter
I pasted my cpu with the Thermal Grizzly Duronaut I got and I would say for me it made a 2 degree difference over the Noctua Nt-H2 paste that released 1 or 2 years ago.

I didn't really find it all that hard to spread around myself,I think they should have made the spreader I circled in red so that the handle is on a 45 degree rather then it laying flat.

I found that the handle would run into my video card or the heatsink's on my mobo,if this stuff last's I think I will keep using Thermal Grizzly.

Just to let everyone know a 2 gram tube right now is 14.99 and it was 19.99 which is what I paid.

https://www.amazon.ca/Thermal-Grizz...efix=Thermal+Grizzly+du,electronics,92&sr=1-4

Screenshot 2025-05-16 041541.webp
 
wade7575 said:
I pasted my cpu with the Thermal Grizzly Duronaut I got and I would say for me it made a 2 degree difference over the Noctua Nt-H2 paste that released 1 or 2 years ago.

I didn't really find it all that hard to spread around myself,I think they should have made the spreader I circled in red so that the handle is on a 45 degree rather then it laying flat.

I found that the handle would run into my video card or the heatsink's on my mobo,if this stuff last's I think I will keep using Thermal Grizzly.

Just to let everyone know a 2 gram tube right now is 14.99 and it was 19.99 which is what I paid.

https://www.amazon.ca/Thermal-Grizzly-Duronaut-Conductivity-Overclocking/dp/B0DSTWDYD2/ref=sr_1_4?crid=3HI0DJ444ADZI&dib=eyJ2IjoiMSJ9.ubW5GdC-7jz05kZTt99ClXXRLCXGZFYL8BIUE8zxEIg_4F5l7X89yxmeMY2OMfjktqML0za-HaUByGrN4gK6Y2TMGyr5vghn-rKTi8Um6aQGud07Uv-WuXQ3nqosp8-l6JBRTvqNXaaBPKD_UdJap-NoQM8nBYFfHIzhGtyVMyTimjKy7O3Sc2GDRI4eWz-ARZgqASBYSZ5yBiVsTV6nJ_gg0duOl5HrVrgtM5DmEL1ISPvWNc2arF0mYOL6HpGp9hW7Zyyek6sgVz97_h700dv-SmV0m4PUvDDt0qxtW2Q.dc5KkPUhBup75Tgd1Rkx98TgwyI-Th2o0RrBVAmFUgI&dib_tag=se&keywords=thermal+grizzly+duronaut&qid=1747383224&s=electronics&sprefix=Thermal+Grizzly+du,electronics,92&sr=1-4

View attachment 43882
Click to expand...
Good to know. I have been on a tube of mx4 (maybe 6?), and the included paste with Thermalright coolers for the last while. I would love to give this a shot as well.

For anyone needing more, the 6g tube is also on sale ($32 on for $25).

 
Honestly a lot of modern pastes including NT-H1/NT-H2 lost out to classic AS5 anytime I tested it myself. The only reason I even dropped AS5 in favor of NT-H# was the electrical conductivity or lack of anyways is lower risk. Always wanted to find something new that I was happy with. Ordered that 6g tube see how that works out.
 
Last edited:
xentr_thread_starter
I wanted to update this thread as I got higher temps when using Duronaut and not sure why.

When I first applied Duronaut I was getting 1 to 2 degrees lower temps and then my weather changed and my temps went up a good bit and when running Handbrake I was getting 58 to 59C temps most times running my 9900X CPU,then my temps went to 62 and then 64C when running Handbrake.

I got the opportunity to buy a brand new never used 9950X from a friend who had it for 8 days then something happened where he needed the cash and right away,he bought the cpu first was going to get the mobo and ram later as his PSU and GPU were still fine and I ended up getting what he paid for $839 for $636

Well so I go and throw the 9950X into my rig and I thought I'm going to see what happens if I go back to my trusted Noctua NT-H2 paste and ran the 9950X using Handbrake on bone stock settings and 4800mhz ram speed and then changed over to 6000mhz EXPO1 and both times it ran around 67 to 68C max with my Noctua NH-15D G2 and nothing else touched in the bios.

Also to be clear I ran my 9900X and did 2 encodes with Handbrake and watched the temps and m temps were 64C and then I swapped out my 9900X for the 9950X and got to testing and there was no change in the temps in my house or the humidity.

I honestly think either the Duronaut dries up fast or I got bad batch because my 9900X had the PPT lower from 162 to PPT135 I also lowered the TDC and EDC and forget those numbers.

The paste must be bad or something because for a throttled back cpu to run 64C which is 3 degrees cooler then what the 9950X was running with no throttling back at all and just EXPO1,I also didn't give the Noctua a chance to settle in or nothing as soon as I could get Handbrake fired up I ran it.

When I took my Noctua cooler off most of the paste was stuck to the coolers cold plate and seemed a bit dry and wiped up almost 100% right off the cpu IHS and cold plate with no rubbing alcohol,I had to remove a tiny bit with alcohol but not a lot,I have never had thermal paste wipe almost 100% off with just paper towel.
 
Last edited:
xentr_thread_starter
I forgot to mention that I have now made the following changes to my 9950X as I planned to and I ran the 9950X stock with EXPO at first just to see how hard Handbrake would push it and how much my thermals would be.

PPT 162
TDC 120
EDC 180

Curve Optimizer so is set at a Negative All Core Offset of-20,I'm going try and get it to -25 or more if I can seeing as it is running stable right now and not crashing and running at 62 to 63C for the whole encode and jumps to 64C for 1 to 2 seconds and drops back down to the 62 to 63C.

rom what a lot of the video's I have watched the guys say that almost all the 9000 Series can handle a -20 and it's rare that you would have to run run your cpu at -15 to keep it running stable,they also say you have a really good cpu if it can handle -25 and a great cpu that can handle -30 and still run stable with that little of voltage.
 
Interesting results with the increasing temps on the 9900X.

That said I wouldn’t consided the temps on the new 9950X a valid comparison to the 9900X…you would need to now run the 9950X with duronaut to see how it compares to the noctua paste. I would be really curious to know.
 
xentr_thread_starter
I'm not 100% certain on the Duronaut and it just seemed funny to me at first when my temps did rise a bit,and then when I switch cpu's I know from others that have a 9950X that they tested and their systems running stock setting's with Handbrake for me so I'd have an idea of what to expect and they were getting 69 to 71C

I honestly can't see it being anything but the Duronaut but it could have been something else,I'm going to repaste my 9950X to find out either as I just got done doing it.
 
I just completed the 9900X build for my niece and used the Thermalright Phantom Spirit 120 Evo and the paste that came with it. Ran Cinebench multi-core and the hottest core was 74 C, with the others between 65-73 C. That is with EXPO enabled to run the RAM at 6000 but no other changes from stock.

Just for comparison to what you are trying. I was pleased with that max temp and workload.
 
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