PTM7950 and GPUs

[quickhakker]

so my initial plan for this year was to save up and get a pc during black friday, things didnt work out as planned so im falling on a temporary back up, using the PTM7950 to keep my current system cool and i was wondering if anyone has used it to cool VRMs and if so how sucsesful was it, just for info i got an rtx2060 in the normal position so theoretically no leakages would happen if thats a worry

[Average Nerd]

VRMs are usually better off with a regular thermal pad, as they usually require a far thicker pad than what PTM7950 is.

 

On the die itself, PTM7950 will work in any orientation to my understanding.

[leclod]

PTM7950 is not suitable for VRMs.

PTM is 0.25 mm thick. To my knowledge the minimum pad thickness is 0.5mm.

(The minimum pad thickness in my 3070 is 2mm)

Also why bother about leakage ? this isn't liquid metal.

(I do recommend PTM7950 for the die though, although your 2060 should be already very fine with paste)

Edited December 5, 2025 by leclod

[Stagg]

7 minutes ago, leclod said:

PTM7950 is not suitable for VRMs.

PTM is 0.25 mm thick. To my knowledge the minimum pad thickness is 0.5mm.

(The minimum pad thickness in my 3070 is 2mm)

Also why bother about leakage ? this isn't liquid metal.

(I do recommend PTM7950 for the die though, although your 2060 should be already very fine with paste)

https://www.tomshardware.com/pc-components/gpus/gigabyte-leaky-gpu-problem-continues-heres-the-thermal-putty-creep-in-action

[leclod]

2 minutes ago, Stagg said:

https://www.tomshardware.com/pc-components/gpus/gigabyte-leaky-gpu-problem-continues-heres-the-thermal-putty-creep-in-action

How is thermal putty related to PTM7950 ? (I could have missed something though, I didn't read the whole thing)

Edited December 5, 2025 by leclod

[Stagg]

Just now, leclod said:

How is thermal putty related to PTM7950 ? (I could have missed something though)

Read the OP.

 

2 hours ago, quickhakker said:

so my initial plan for this year was to save up and get a pc during black friday, things didnt work out as planned so im falling on a temporary back up, using the PTM7950 to keep my current system cool and i was wondering if anyone has used it to cool VRMs and if so how sucsesful was it, just for info i got an rtx2060 in the normal position so theoretically no leakages would happen if thats a worry

That is where the worry comes from.

[leclod]

8 minutes ago, Stagg said:

Read the OP

I did a few times,

Could you point in the direction ?

Edited December 5, 2025 by leclod

[Poinkachu]

1 hour ago, Stagg said:

https://www.tomshardware.com/pc-components/gpus/gigabyte-leaky-gpu-problem-continues-heres-the-thermal-putty-creep-in-action

That gigabyte card model is using what they call thermal gel.

Which I assume is a more liquidy thermal putty.

 

If you read the whole fiasco, gigabyte claimed that earlier batch of the cards was using an incorrect amount of the so called gel.

 

PTM7950 is pretty much a thermal paste.

But since it's a phase change material, it hardens when cooled, and softens when heated.

 

Will PTM leak? maybe.

I mean, if you put a spoonful or two of thermal paste on your GPU then slap on heatsink, pretty sure sooner or later those leftover paste will go somewhere else.

Especially if the paste is very liquidy.

 

Though if you do put a spoonful or two worth of PTM on a GPU die, that's a total waste of money for a very detrimental effect on temp.