Rofa1234

That is true at the moment I know. Dowsil TC-5550 and TC-5960 will be available under a different brand in Germany later this year or early next year for TC-5960.

TFX has poor longevity, better avoid it. It is a good example that simply putting in a huge amount of filler won't work. It has great initial performance that's for sure. The devil comes in the longer-term. When I tested this a long time ago I wasn't aware, I noticed it later. https://koolingmonster.com/insights/what-is-thermal-conductivity-and-is-it-always-good-for-thermal-paste Best paste in the market right now is certainly TC-5960 from Dow Chemical. The older ones TC-5550 and TC-5888 are great as well. Others I would recommend are Koolingmonster Kold-01 and Aerocool Fuzion. All of them are hard to buy unortunately.

Honeywell also offers 0.2mm thickness: https://www.caplinq.com/ptm7950-most-thermally-conductive-phase-change-pad-with-very-low-thermal-impedance-that-works-in-vertical-applications-ptm7950.html

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.

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.

I made a mistake, I meant to say Kryosheet didn't work, it hit 100C very fast. On uneven low pressure laptop heatsinks it is more limited than PTM7950 or a medium-high viscous paste.

Kryonaut didn't work on my laptop because of a bad contact. On a laptop it is a risk trying it out. If it works it can be great.

Here is a test with 25 pastes/pads on a GPU: https://youtu.be/RQ0jmVQ3Lvg?t=1455

I did a second test with Heatphase Ultra with identical temperatures to PTM7950. Consistency also identical to me, specs identical as well by the looks of it. It is very likely this is a simple rebrand of PTM7950.

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.

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.

This video could be interesting for some, it's about the "misleading W/mK Marketing" https://youtu.be/_kzGTOyCYrY

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.

Alpenföhn Blitzeis is quite good, although it seems to be slightly below Kooling Monster KOLD-01. I tried two Blitzeis applications and this is the better one. Gelid GC-4 90/93/91/92 Alpenföhn Blitzeis 86/88/86/87 Kooling Monster KOLD-01 83/87/85/86

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.

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

Apex is thick, the big surprise is the bad performance on a notebook. XTM70 is much better.

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.

I finished my new test. It's not comparable to earlier tests. I lowered the fan speed to increase the CPU temperature. Because of the low ambient it was too low. Kooling Monster KOLD-01 and Aerocool FUZION are both great, big recommendation. Both are also quite easy to spread, although I would say Kooling Monster KOLD-01 is a little easier than Aerocool FUZION. Kooling Monster KOLD-01 20.0 80/82/80/79 Ceezon TG-128 19.2 85/90/86/87 Aerocool FUZION 19.8 79/82/80/80 SYY-157 2022 edition 19.5 82/85/83/83 Arctic MX-6 19.6 83/87/84/85 Alphacool Apex 19.6 86/87/86/85 Phobya NanoGrease Extreme 19.6 83/87/85/85 Thermalright TF8 19.6 81/85/82/83 Thermal Grizzly Kryonaut 19.7 81/83/82/82 Corsair XTM70 19.7 81/85/83/83 Thermalright TF9 19.9 80/83/82/81 Deepcool G40 19.8 80/83/82/82 Coolermaster CryoFuze 19.8 80/83/81/80 FUZEIce Plus 19.9 83/86/83/83 Kooling Monster KOLD-01--------80.25 Aerocool FUZION----------------80.45 Coolermaster CryoFuze----------81.20 Thermalright TF9----------------81.60 Deepcool G40-------------------81.95 Thermal Grizzly Kryonaut--------82.30 Thermalright TF8----------------82.90 Corsair XTM70------------------83.30 SYY-157 2022 edition-----------83.75 FUZEIce Plus--------------------83.85 Arctic MX-6----------------------85.15 Phobya NanoGrease Extreme----85.40 Alphacool Apex------------------86.40 Ceezon TG-128------------------87.80

2022 edition of SYY-157 is about 2 degrees worse, I think posted my results in the other thread. SYY-157 2021 edition 24.9 25.6 76/80/79/76 74/81/79/78 SYY-157 2022 edition 25.1 25.6 25.7 75/82/78/78 79/83/81/81 76/83/80/81 Of course these are initial temp results and may not reflect longevity performance. I have seen a degradation on several pastes on my notebook but this is hard to compare. Maybe it's true that some of the pastes with a high thermal conductivity have worse longevity, it might be a tradeoff in the end. edit: https://koolingmonster.com/insights/what-is-thermal-conductivity-and-is-it-always-good-for-thermal-paste?fbclid=IwAR0cViHs2gwALkozLO0KP2EMZSOXQoTKZIHg_d-8TFvFObvL3Rx-LyNEc2U On a desktop there is also a pattern in some roundups that thick pastes do not work as good. Also the spreading is harder on a bigger desktop chip. If I had to test on a desktop chip I would try out Kooling Monster KOLD-01. Because it's easier to spread than all my other top laptop pastes and they say this paste has been used in industrial servers where longevity is most important.

I got my new Kooling Monster KOLD-01 and some other pastes. I don't have time this weekend, so I just made a quick test with Thermalright TF9 and Kooling Monster KOLD-01 seems to be a very good paste. The unique part is the consistency, it's nothing like TF9 or basically all my other top performing pastes. This paste is much less viscous (at least when I spread it), more like a medium viscous paste. Even MX-6 is more viscous (and performs worse than TF9). I was sceptical therefore but to my surprise it performed basically identical to TF9. I have some other pastes to test and need to double check next weekend. Thermalright TF9 20.3 69/75/72/72 Kooling Monster KOLD-01 20.5 71/75/72/72

It's not about the picture, it's about the text from both Kooling Monster and the chinese baking test. That's the only explanation I can think of, even though I doubt SYY-157 degrades so fast for everyone, otherwise the Amazon rating section would have been full of complaints. Beside this the thermal conductivity rating is mainly a marketing rating, some have to learn the hard lesson. He purchased it because of the high thermal conductivity......it's not so simple. And why not try Alphacool Apex 17W/mK then?

Phobya Nanogrease Extreme is less viscous than SYY-157 which tends to be better for a desktop CPU but worse for a notebook, this needs to be said in a notebook forum. The 2022 version of SYY-157 isn't as good as the original version however, in fact it's 2 degrees worse on my notebook. Another lesson why the thermal conductivity number doesn't tell much. This may not explain the poor longevity and this is speculation at this point. Remember what the chinese longevity test said: Kooling Monster is saying this: Speaking about Kooling Monster, they send me a refund and I get a new paste. Seems like the missing paste was just a mistake.

If I use G40 and Akasa T5 ProGrade Plus as reference I would say MX-6 performs something between 15-21 in this test because it's 1-3 degrees behind these two. Deepcool G40 performs similar as FuzeIce Plus and Thermalright TFX on my notebook at the end of the day. No idea about long term performance. MX-6 is much more viscous than MX-4/MX-5 which is probably the main reason why it performs so much better, for a direct die chip it's better.

There are some Deepcool G40/G15 reviews like here and here but they are all tested on a desktop CPU afaik. There is no real big thermal paste test with a notebook I'm aware of (excluding me). Deepcool launched Z10 and EX750 last year, they are quite good as well but couldn't match G40 in my testing. All Deepcool pastes have a low W/m*K and some other companies as well...Akasa, Honeywell, Shin-Etsu. jaybee83, I will try.