Honeywell PTM7958 SP Super Highly Thermally Conductive PCM Paste

Honeywell PTM7958 Phase Change Thermal Paste is the best-performing thermal material in the world, based on our in-house testing. It works perfectly for CPUs and GPUs. Using PTM7958 along with Honeywell TGP8000PT Thermal Putty offers an unmatchable result!

PTM7958 is designed especially for high-performance chips requiring exceptional thermal performance, durability, and reliability. Nvidia and Lenovo have already been using PTM7958 for their top-of-the-line flagship GPUs and gaming laptops.

Honeywell PTM7958-SP Super Highly Thermally Conductive Phase Change Material (PCM) Paste Thermal Interface Materials

Honeywell PTM7958-SP is an optimized version of Honeywell PTM7950-SP with even better performance.

Honeywell’s PTM7958 series, a super highly thermally conductive Phase Change Material (PCM) in both pad and paste formats, is designed to minimize thermal resistance at interfaces, maintain excellent performance through reliability testing, and provide scalable application at a competitive cost.

Based on a novel polymer PCM system, this material exhibits excellent interface wettability during typical operating temperature ranges, resulting in extremely low surface contact resistance.

A proprietary material provides superior reliability (pass 150˚C baking 1000 hours, T/C-B 1000 cycles) and maintains low thermal impedance (<0.035˚Ccm2/W @ no shim), making the PTM7950 series desirable for high performance integrated circuit devices.

Types

• Honeywell PTM7958-SP (Paste)
• Honeywell PTM7950-SP (Paste)
• Honeywell PTM7950 (Pad)

Features & Benefits

• High performance filler and polymer technology.
• Phase change at 45°C.
• Highly conductive filler loading to optimize performance.
• Superior handling and reworkability.
• Superior reliable thermal performance.
• Available in both pad and paste formats.

General Properties

• Syringes: 2G
• Color: Grey
• Thermal Resistance (cm2-K/W):  0.035 °C·cm²/W
• Thermal Conductivity (W/m °K): 8.5 W/mK
• Specific Gravity: 2.8
• Volume Resistivity: 2.1x1014 Ohms-cm

Reports

• PTM7900 Series Datasheets & Reports

Related Tools and Accessories

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Installation Demo

• How to apply Honeywell PTM7950?

Online Reviews

• jo_ko_0: I couldn't believe how good the results were. Hot spot dropped around 20°C and the fan speed doesn't go above 50%! This thing is quiet compared to before! I've been running BG3 for the past couple hours and the temps are rock solid at 78°C, 90°C hot spot. Out of curiosity, I set the fan speed to 70% while running BG3. I was getting 58°C and 70° hot spot! I guess it helps when the heat can actually leave the die lol. Since this is PTM7950, I only expect the temps to keep getting better with more heat cycles. Anything that's bare die is getting PTM from now on! Thanks for reading! 0.25mm from MODDIY.
  
  
• ZephyrusG14: 50mm x 31mm of Honeywell’s PTM7950 (obtained from MODDIY). For total system performance I used 3DMark TimeSpy and it showed an increase of 5.1% in 3DMark score with 19.6% and 3.0% for both the CPU Score and Graphics Score, respectively. Which is a win in my opinion.
  
  
• Avntusu: Finally here, from MODDIY - presenting PTM7950 pad... On ultra settings at 2K resolution, I’m getting 67 degrees celsius on the CPU and 65 degrees celsius on the GPU while getting a stable 105-115 FPS. This is online, I get about 20-30 extra fps on story mode.
  
  
• SacaLaBolsita_: I ordered the Honeywell PTM7950 thermal pad off MODDIY. It came in today, got it put in and Holy shit what a difference! When playing games like fortnite now my temps are easily 10 to 12°C cooler (I use a laptop stand to let the fans breathe).
  
  
• I-Skycake-I: I went with MODDIY, bought the 50x31 mm that would allow me to paste it twice in case I would mess up badly.. Results : You can see for yourself in the pictures… Improvements across the board during a 3D Mark Port Royal stress test. Of course they are all linked to the lower GPU temp which allows to increase the GPU clock and reduce the fan speed. By the way, this is the very first run. Which would be the worst case for PTM as the burn-in is not complete yet.
  
  
• EveningDay5261: I went from around 89c down to 77c when benching with XTU. All I did was change the thermal pads.
  
  
• DotBetaSDK: After installing the thermal pad and running the game again same settings same place for 10 minutes temps went down to 75-77c. The temps are 7-10c cooler running cyberpunk 2077 as well. The most important thing for me is the fan is quieter since the temps are lower which is a big plus. I'm happy with how it turned out.
  
  
• gpin305: Before (w/ Liquid Metal): Temps GPU High 96c / CPU 88c / Junction 101c. After (w/ PTM7950 and K5 PRO): Temps GPU High 78c / CPU 72c / Junction 80c.
  
  
• Kelzs: Temps went down from avg 82c (Max Fan Mode - Synapse Custom)all the way down to 72c in the same mode.I can now do Synapse Custom High mode without max fans and it stays much quieter and still averaged 76c.Idle temps went from 68-75c to 55-60c. I can regularly get 23k and average 22.8k or so on GPU Score with average temps of between 57-60c. I used PTM 7950 from MODDIY.
  
  
• 3p1cG4m3r123: I decided to get some PTM 7950 from MODDIY (40mm by 40mm). Idle temps dropped at least 20 degrees. Temps in Valorant came to be around 60 degrees with little to no fluctuations. Could barely hear the laptop fans, and glad that I now have more thermal headroom.
  
  
• Snowcross2020: I do use IETS GT500 to keep the temperature down especially during these hot European summers, but after the re-paste and new pads, it has never reached higher than 76-77 °C (gaming with Youtube music and tons of Firefox tabs open). It is now also is stable at 34-36°C while browsing + Youtube/Netflix and doing paperwork.
  
  
• ZephyrusG14: So I ordered the PTM7590 (the original stuff from MODDIY). My idle temps in Quiet mode are stable at 37°C, battery life is a whopping 10+ hours and even the performance improved! I've been playing Delta Force and could only run it on Medium Settings as the High Settings would only yield choppy 16-20 FPS. Jumped into the game, set it to High and got a great stable Performance with FPS easily over 30 (can't know for sure as there is no FPS overlay) with temps never going above 85°C. I loved the Laptop before but now it's a whole different beast! I've been thinking of getting a Macbook just to have some more battery life etc, but now? Forget it! I'm just so thrilled right now and really want to share, it feels like a brand new laptop - the PTM7590 is doing an awesome job!
  
  
• devious222: Each of my devices temps have improved, Win Max 2 1080P high settings temps would go up to 80-90 now they stay around mid 70. Win Mini mostly stays under 70 when gaming at 20 TDP. My G1 doesn’t sound like a jet engine when gaming. Over all really happy with the results, curious if I will get better results once the PTM7950 bakes in. I order my PTM7950 from MODDIY.com.
  
  
• Raventlov: I decided to take the plunge and order myself a slice of this thermal interface material from MODDIY. With the Honeywell 7950 TP in place, my GPU temperature saw a drop from 72°C to 69°C, but that's not all; the hotspot temperature went down from a toasty 97°C to a much more comfortable 90°C. What's even more impressive is that I achieved these lower temperatures with the fan running a whole 10% slower than before. In conclusion, I must say that my investment in the Honeywell 7950 TP thermal paste was well worth it. While its application requires a bit more attention, the performance gains and temperature reductions I achieved speak for themselves. If you're on the fence about trying out a new thermal paste, I'd definitely recommend giving this one a shot. It might just be the upgrade your rig needs to keep those temperatures in check and your gaming sessions running smoothly. Cheers to better thermals!
  
  
• ZephyrusG15: I ordered it last week from MODDIY (80mm 40mm) and it arrived today. When gaming on turbo the fans were quieter overall and I’d even hear them slow down! CPU maxed at 83 and the GPU maxed at 78. This was playing GTA V at 4K on my TV as well! I highly recommend this thermal pad! And I think I have enough leftover for my desktop GPU as well. I applied some to my desktop CPU (AMD 7900X) and gained about 10C when gaming.
  
  
• Top-Caregiver4310: Holy sh*t guys, i have to say i cant believe what this think can do. I got a Late Model LCD, people Said that this Revision has good thermal Paste, But i just installed it and dropped from 83degrees on the CPU to a Max of 72 in Zelda totk. Just wanted to give you guys a heads up that its totally worth it. Also dont buy fakes, get it from MODDIY.
  
  

• MrAlex68: I had to try by myself by re-pasting the machine using PTM7950 (from MODDIY) after 2 weeks of this post. And the result is so good. When in normal use, the CPU temp now rarely goes above 65c degree (ideal is 60c), GPU temp is just around 50c degree. When in game (Eg. eFootball), the CPU temp rarely over 85c degree (GPU at 61c max), while before re-pasting CPU went up 100c frequently. I use laptop cooling pad IIano v12, temps are even go lower by around 10c degree in both cases. The score for Cinebench R23 goes up from 26k (before re-pasting) to 31.5k (after) without undervolt (I use WSL Linux, so cannot undervolt). That makes me feel happy. Until now, my machine still keeps its temperature and great performance.
  
  
• TrickRelation4281: Instead of going back with new thermal paste I installed Honeywell PTM7950 SP phase change pads from MODDIY and they seem to have lowered my core temps quite a bit compared to my records from 2018.
  
  

• Albi-M: from the moment i turned it on i saw immediately why that little Honeywell thermal pad is so well known. I never saw my laptop temps so low, ever, not even when it was brand new 5.5 years ago. It didnt even get close to thermal throttling on my CPU, gaining a full 10 degrees, so i dont really go over 86c even with the fans set to auto on their lower setting. But the best part was noticing that the massive core delta basically disappeared. No throttling at all. If you are planning to repaste your laptop, give them a shot!!
  
  

• HungryBrain26: I used PTM7950SP pad measuring in at 50mm x 31mm bought from MODDIY for the CPU and GPU. This was the result of the run. A score of 15400 compared to 11338 before indicates a 35% performance increase!