Thermal Grizzly - PhaseSheet PTM (50x40mm)- High Performance Thermal pad with Phase Change Material | Durable, not electrically Conductive | for CPU, GPU & Electronics Cooling

If you're reading through reviews on this stuff, chances are you're looking to find out how it differs from standard thermal paste, and whether it's worth your time. Hopefully I can help you with that.Thermal Grizzly's Phase Change pads have many advantages over paste. Since I like to start reviews with the good, let's look at a few.Thermal paste dries out, and when it dries it loses its ability to conduct heat. It's a good practice to repaste every couple of years because of this. If you're the type of computer user who upgrades often, this probably won't apply to you since you're either getting rid of your old system before that paste dries, or you're constantly re-applying it anyway as you change cooling solutions or upgrade CPUs. On the other hand, if you like to run your systems as long as possible, these pads are for you--they DON'T dry out. Pretty nice stuff if you're going to be using them in a server or a system that won't see much in the way of regular maintenance.These pads also don't suffer from "pump out." Since your CPU and heat sink are usually made of different materials, they expand and contract at different rates. Over time, more and more paste gets pushed out until you've got areas with poor coverage. Phase change pads are solid at room temperature, and they turn into a sort of paste under high heat: your pads are expanding and contracting right along with your heatsink and CPU rather than being pushed out.I've repaired enough computers in my time to know that most of you don't apply thermal paste properly to begin with. Most folks fall into the "more is better" mindset and make a proper mess, like they're making a peanut butter sandwich. Others use far too little and have a lot of area uncovered. These pads take all the guesswork out of that by completely covering the die with a uniform layer.Also, if you're careful while removing your heat sink, you might be able to reuse the pad. It's solid at room temperature, remember, and it never dries out.If all that sounds good to you, here's how you use it.First, store the pad in the refrigerator until you're ready for it. It's solid enough at room temperature, but it'll rip less easily if it's cold. While the pad is chilling, remove your heatsink and clean off all that old paste. (Told you you use too much of it.) 99% rubbing alcohol works great for this. Take your pad out of the fridge, and line it up to your CPU surface. Use a Sharpie marker to mark off the length and width, then cut the pad to size.Now for the fun part: peel one side of plastic off the pad. Lay the exposed pad on your CPU, then press it down. Use your fingers to roll any air bubbles out of it. Then CAREFULLY... SLOWLY... peel the top plastic off. The pad is going to want to stick to the plastic more than it's going to want to stick to your CPU, so be patient with this. Once done, carefully install your heatsink (try not to slide it around, which might wrinkle the pad).Time to test temps, right? Well, no... not exactly. The pad needs a few hot/cold cycles in order to work its way into all the microscopic nooks and crannies. The general recommendation is to run a stress test for ten minutes, then power down the system to let things completely cool. Ten cycles like this is what most people recommend, but I've found four or five is enough. This is where Youtube reviewers tend to mess up, by the way: they'll slap on a pad, immediately run a stress test, then conclude the pads aren't as good as paste. Nothing could be further from the truth. Once cycled, you very likely will be getting lower temps than you would have gotten with tried-and-true paste.And you'll never have to apply it to that system again. That's my way of addressing the main disadvantage of the pads, which is that you could buy a tube of paste for what you're paying here. On the other hand, you're going to be applying that paste over and over again--and probably using too much of it anyway. (Don't worry, that's the last time I'll berate you for this.)The other downside is how meticulous you have to be about applying it. Just slow down and take your time. If the pad does rip, do your best to fix it and you should be fine.Highly recommended!

I bought this stuff to re-paste a couple of GPUs. You get enough to cover two GPU dies (though maybe only one for the newest high end stuff). It's a little tricky to work with the stuff. I cooled it down in the freezer for a few minutes before application, which involved marking the size I wanted, cutting with a sharp pair of scissors, removing one side of the protective film, placing on the GPU die, and very carefully removing the other side of the protective film. The stuff sticks better to the film than it does the die so you have to be fairly careful when removing it. I used a pair of electronics tweezers which worked pretty well. The performance is top-notch. I saw a huge drop in temperatures, though obviously the cards were running hot and needed re-pasting. I have noticed no change in thermal performance over several months, so there appears to be no issue with pump-out or longevity.

1) Works better than Grizzly Kryonut thermal paste in terms of thermals2) Easy to apply. You can follow the instructions and put it in the fridge. Or you can apply it to the CPU, take a can of air, turn it upside down, aim the straw at the CPU and squeeze for 2 seconds. It should freeze the compound. Then take off the plastic with tweezers.3) It's reusable since it turns from solid into a liquid every time. If you're switching to a different cooling solution. 80% of the compound is squeezed out around the sides of the CPU. Just collect those leftovers, place them on top of the CPU in bonfire method (Pea method) apply the cooler. Once you turn On the PC, It'll turn to liquid and 80% of the compound will squeeze around the CPU. Then tighten the cooler again.

I bought 2 of these sheets to apply for a CPU upgrade on a dual Xeon workstation. The recommendation that you place the sleet into your refrigerator is valid; the sheets are thin and can be fragile. This size sheet was trimmed with scissors to fit the CPU's. With my first application to new CPU, there was a slight amount of the material sticking to the plastic backing. By taking it slow and easing my way around the other side, I was able to apply it with a slight tear, which I applied to the CPU. With the second application, I applied the sheet directly to the cooler heatsink instead of the CPU and it was quicker; again a slight tear that was applied with equal pressure. Both CPU's run at approximately 60-65° C when at running CPU intensive applications at 100% usage continuously; a decrease from 70-75° C previously. I recommend these PTM sheets.

Welp Roman, I've had no problems with using Genuine PTM 7950 sheets and getting those to separate from their plastic film, but I was unable to fully separate the Phasesheet from the plastic film. Yes I tried the freezing method. In the end I tore the Phasesheet. Luckily, I had more PTM 7950 on standby and I was able to use it.I did try testing with the torn Phasesheet vs a full PTM 7950 application and there was a -5c difference in favor of the PTM7950 sheet. The device I was using this on is a Powercolor Red Devil RX 7900 XTX.Cleaning up this Phase Change Material takes some work and separating the Silicon chip from the heatsink takes a bit of rocking to slowly separate the die from heatsink. Several passes with some Rubbing Alcohol will do the trick.

Is this expensive? Yes. Does it work? Yes. Can't speak to it being better than your typical thermal paste, but I like the idea of never having to mess with it again. Used this instead of re-pasting my decades old PS3 and it no longer freezes and I will never have to tear it apart again.

This worked wonders for me. My RX7900 GRE that is under a year old started overheating and shutting down my system. My temps were only around 60c but I had a hot spot temp of 100-110c under load.I decided to repast my GPU with this and now my system sits at 60c with a hotspot of 79c after an hour stress test.I found it was easy to apply following the instructions and it fixed my problem.