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Rofa1234
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Yes I have, it was a lot worse than the PTM7950 phase change pad or TC-5888. Note that there are some rebrand of TC-5888 in the market, I believe Kold-01 is a TC-5888 rebrand and possibly Aerocool Fuzion too. I posted some results here I think. My favourite pastes are TC-5888/Kold-01/Fuzion/Shin-Etsu X-23-8117/Thermal Hero Quantum. Haven't tested TC-5550 and TC-5960 yet, they don't sell directly to end consumers, they are hard to buy.
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Dowsil TC-5550 looks good here: https://youtu.be/htp7e1w_BdY?t=330 They also released a new paste called TC-5960 recently which from the specs is the best paste from Dowsil. They don't mention it is for PCM replacement unlike TC-5550, not sure if it's better than TC-5550 for a laptop CPU though. TC-5888 was great and in fact the best paste I have, if one of them is better this might be the best bare die paste in the market at the moment. TC-5960 maybe also for desktop CPUs because the bondline thickness has been reduced compared to TC-5888 down from 0.02mm to 0.016mm despite the higher viscosity.
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I tried Heatphase Ultra and it's very similar to PTM7950, maybe the same. In my first try it was a bit behind PTM7950 but this might be a simple measurement inaccuracy, I would have to do a second run and a back to back comparison with PTM7950. They are great, that's for sure. Only the very very best thermal pastes can reach PTM7950 or Heatphase Ultra. I also tried KryoSheet but this failed on my laptop CPU, it didn't work. It can't fill up the uneven heatsink or it's not flexible enough.
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Thermal Hero Quantum is a good choice on my laptop, maybe 0.5°C behind the best (Kold-01, Aerocool Fuzion). Maybe it's worth a try for someone who wants to try out something new. By the way I believe Kold-01 is a reband of DOWSIL TC-5888 because the specs are identical, it's exactly the same. Also to me Kold-01 and Fuzion are identical, same paste to me. Dowsil has released a new paste in 2023 called TC-5550. They say it's designed especially for bare die chips and can be used instead of PCM. Specs are almost same to TC-5888, biggest difference is that the viscosity is quite a bit higher at High Strain on TC-5550 which can be a good thing for bare die chips with subpar heatsink contact. Also the thixotropy seems higher. I wonder if this can be better than TC-5888, unfortunately this paste is hard to get.
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Initial 30 minutes OCCT temperature test. 1 day makes no difference. Ok maybe some can improve by 0.5 degrees after 1 day of curing or something like that but who cares, every application with the same paste can differ that much. I tried Gelid GC-4 the other day and there is no magic improvement. Curing is not a thing anymore. Gelid and many other even avdertize their pastes with Non-Curing. 1 week and more is longevity. I cannot test longevity, impossible to do on such a big number of pastes I tested in the last two years and how to test it equally for all in exactly the same way. However a paste that is 5+ degrees worse from the beginning is not a great deal in my books even if it has good longevity. I guess PTM7950 should be the best choice for longevity and also seems to have great temps from the beginning.
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Gelid GC-4 3.5g only 7€ on Amazon.de, I made a first test with this and it's not looking good. It's not competing with the best. The Gelid stuff isn't working for me sadly. I have ordered PTM7950 and Alpenföhn Blitzeis. The specs from Blitzeis and Halnziye HY-P15 are pretty much identical. Maybe the same paste, I don't know.
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Alpenföhn Permafrost 2 worked quite good for me on my notebook, they released a new paste called Blitzeis recently. There are some tests with a desktop CPU. http://glob3trotters.com/portfolio/alpenfohn-blitzeis-extreme-thermal-paste/ https://www.gamezoom.net/artikel/Alpenf_hn_Blitzeis_Test_Review-51756-2 https://youtu.be/L7SAXk8jPYA
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Linus Tech Tips tested Honeywell PTM7950 phase change thermal pad a few weeks ago: No doubt this would work really good on my notebook. I haven't tried it yet because it's not available in my country, maybe I will buy it from a chinese seller next year because I'm curious. In this test the traditional paste (Noctua NT-H2), Thermal Grizzly Conductonaut Liquid Metal and PTM7950 performed similar on a RTX3070 after 15 minutes. The PTM7950 pad needs a bit more heading time to work best. But why is the Liquid Metal not better than the traditional paste there? This week I will try out Thermalright TFX against Kooling Monster KOLD-01 and Aerocool FUZION. TFX was always the best in my initial temperature test and based on my last test KOLD-01 and Fuzion may have a change to match or beat TFX in the initial temp test. TFX degrades quite fast in my notebook, I wouldn't use it anyways. And there is not so much interesting traditional paste left after testing around 70 pastes in the last 2 years....maybe Kingpin Cooling KPx, Thermagic ZF-EX, Zezzio ZT-GXS have a chance to beat TFX in the initial temp test. The thing is even if they could both ZF-EX and ZT-GXS seems to be similar dryish as TFX and therefore I'm sceptical about the longevity.