Thermal Grizzly Presents PhaseSheet PTM Thermal Pad

[sephiroth117]

I will repaste my GPU in few months with an emphasis on stability, so definitely interested, the price is nice too.

 

[A Computer Guy]

I've been using couple of 970 EVO+ in an x570 for 3(4?) years now at 60-70c load temps with no issues. Have more writes on one of them than the drive you mentioned in that thread. It's almost certainly not due to temps, but every SSD is different so who knows?

There's two temps reported on the SSD, the higher one is for controller IIRC so that's the one I'm quoting.

The drives are fine and working without issues. After securing the chipset heatsink the drives are all working fine again too. I suspect the lack of mounting pressure on the chipset heatsink caused poor contact and allowed the chip to overheat to failure causing the NVMe drives to disconnect.

 

[R0H1T]

Sounds odd because I probably could have the highest ambient temps going around, but yeah you do run the 5950x as against 5800x on mine currently.

 

[Philaphlous]

Definitely much more reliable of a supplier than some 2nd market ebay crap or amazon reseller... I trust this way more to be genuine...

 

[dalekdukesboy]

Definitely cheaper than PTM7950, that's for sure. Hope it works just as well

Yes!

 

[Pepamami]

PTM hype has now officially reached le gamur. I cant wait for all the GPUs repasted into oblivion

PTM is bad for business, because u dont have to repaste PTM "every month due pump out effect".

 

[Ferrum Master]

PTM is bad for business, because u dont have to repaste PTM "every month due pump out effect".

With business like Intel does, it is covered, no stress, you have to RMA or change your CPU more often

 

[A Computer Guy]

With business like Intel does, it is covered, no stress, you have to RMA or change your CPU more often

A perfect opportunity to reintroduce the slot based cpu.

 

[TheDeeGee]

Definitely cheaper than PTM7950, that's for sure. Hope it works just as well

LTT is certainly out of business for PTM in the EU now ^^

honestly just use the kryosheet - much better.

Applied a Kryosheet to my 4070 Ti this week, dropped temps by 10-12C.

I never have to repaste it again ^^

 

[phanbuey]

LTT is certainly out of business for PTM in the EU now ^^


Applied a Kryosheet to my 4070 Ti this week, dropped temps by 10-12C.

I never have to repaste it again ^^

I had to replace the PTM7950 on my 4090 after 8 months TWICE - first time I thought maybe factory sheet wasn't put on right, but soon it started hotspotting at 104C and sounding like a jet in the process -- did kryosheet, havent touched it since, temps as good as day1. Have it on my CPU as well - it's the best feeling not to have to think about repaste.

 

[pattesatan]

It's fairly low thermal conductivity.
Thermal Conductivity（W / m-k)：8.5 W/mk
There are thermal pastes with a higher rating.
I'd expect a thermal pad/ sheet to be around 50W/mK or higher

I've contacted Thermal Grizzly and requested info on their PTM's thermal rating as their downloaded Data sheet is useless and contains nothing that isn't stated already on their website.

You wont see any improvements until its "burned in", but it is way better than any thermal paste.

 

[sLowEnd]

"Outstanding thermal conductivity"
So what rating is it? (W/mK)

Thermal conductivity is not a useful number to compare products between manufacturers (or even within the same manufacturer, if methods are not consistent), because of how it is derived and how it can be manipulated

 

[eidairaman1]

One more thing, is that it is very easy to apply, as it has 2 very different "sides" or what I should call it, the plastic shit on both sides, so its easy to not do wrong.

So they made it idiot proof

 

[Caring1]

that 8.5W/mK is an average value in the market, but PTM is not about pure thermal conductivity, it is about zero pump-out effect, longetivity and low thermal resistance (if the pressure condition is met). Basically it is for bare silicon chip cooling (notebooks, GPU's and delidded CPU's). Lenovo uses for notebooks, Nvidia used for 4090, automotive industry for amps/chips, aviation for ... etc. (it is the best non conductive solution for direct die cooling, no question) I used PTM7950 several times and the only negative thing about this material is the application procedure (difficult to apply, freezer and razor involved) - so I ordered PTM7958SP (paste version - but this needs drying process)

I know what it is and what it does, thanks.

PTM is bad for business, because u dont have to repaste PTM "every month due pump out effect".

"Pump out affect"
When people put on too much thermal paste and don't know how it works.
It is NOT meant to retain a thick layer between the die and cooler, it is meant to fill the minor irregularities only.

 

[Lewzke]

The pumpout is related to the material bond structure, PTM structural bond is a lot higher than a regular paste, that is why even at high pressure the thin layer remains in the contact surface, contrary to a regular paste which slowly drifts out to the sides.

 

[ARF]

It's fairly low thermal conductivity.
Thermal Conductivity（W / m-k)：8.5 W/mk
There are thermal pastes with a higher rating.
I'd expect a thermal pad/ sheet to be around 50W/mK or higher

I've contacted Thermal Grizzly and requested info on their PTM's thermal rating as their downloaded Data sheet is useless and contains nothing that isn't stated already on their website.

that 8.5W/mK is an average value in the market, but PTM is not about pure thermal conductivity, it is about zero pump-out effect, longetivity and low thermal resistance (if the pressure condition is met). Basically it is for bare silicon chip cooling (notebooks, GPU's and delidded CPU's). Lenovo uses for notebooks, Nvidia used for 4090, automotive industry for amps/chips, aviation for ... etc. (it is the best non conductive solution for direct die cooling, no question) I used PTM7950 several times and the only negative thing about this material is the application procedure (difficult to apply, freezer and razor involved) - so I ordered PTM7958SP (paste version - but this needs drying process)

8.5 W/m.K is very low and poor performance. The Kryonaut is rated at 12.5 W/m.K.

 

[Lewzke]

8.5 W/m.K is very low and poor performance. The Kryonaut is rated at 12.5 W/m.K.

Yet the Kryonaut will fall short in performance - when used in direct die scenario. Just try it.

 

[ARF]

Yet the Kryonaut will fall short in performance - when used in direct die scenario. Just try it.

People use liquid metal. 70-80 W/m.K.

 

[Lewzke]

People use liquid metal. 70-80 W/m.K.

I work on my laptop, I cannot afford the risk of shorting the motherboard so I am searching for the best non-conductive solutions. Also the longetivity is questionable - it will corrode (copper heatsink). Maybe if I run a desktop PC delidded.

 

[stimpy88]

So is it a thing that a Kryosheet is better than thermal paste? I know it's a use once solution, but is it actually better than a near top-of-the-line thermal paste now?

 

[R-T-B]

So is it a thing that a Kryosheet is better than thermal paste? I know it's a use once solution, but is it actually better than a near top-of-the-line thermal paste now?

I used it and it improved my temps over an older application of Arctic Cooling MX-4. Take that for whatever its worth.

 

[Shrek]

Seems they see "pump-out" as a thing.

 

[R-T-B]

8.5 W/m.K is very low and poor performance. The Kryonaut is rated at 12.5 W/m.K.

W/m.K is not the only metric in thermal performance and is highly misleading on its own.

 

[TheDeeGee]

I had to replace the PTM7950 on my 4090 after 8 months TWICE - first time I thought maybe factory sheet wasn't put on right, but soon it started hotspotting at 104C and sounding like a jet in the process -- did kryosheet, havent touched it since, temps as good as day1. Have it on my CPU as well - it's the best feeling not to have to think about repaste.

Good to know, because initially i was gonna try and get TPM. But since i'm from the EU getting the legit one was tough.

So i got the 50x50 Kryosheet for €22 incl shipping at a online store in my country, and now i have enough left for another 3 GPU's.

 

[ARF]

W/m.K is not the only metric in thermal performance and is highly misleading on its own.

Care to bring more details?