[Honeywell PTM7950 Phase Change Thermal Pads/Sheets] Application, Tips, and Results

@Usernames I’ve read on the internet from a few people saying that it should last a few years and isn’t prone to pump out issue. As opposed to that being a major issue with Kryonaut on bare dies, causing thermal performance to degrade and needing to reapply it. I’m not sure how true this is though – but yeah, I’ll try to update with longevity reports!

All Prime95 testing was done with Small FFTs, not Smallest, since it says it uses max power/heat/CPU and was used originally in the other 60W thread: Small FFTs (tests L1/L2/L3 caches, maximum power/heat/CPU stress).

Here’s an MSI Afterburner hardware monitor screenshot of Small FFTs:

And here’s after pausing the graph, waiting a while, unpausing the graph, and then finally rerunning with Smallest FFTs:

Note: I don’t know what the ambient temp is as I’m running this at the airport and on/near my lap, but it does seem fairly cool. Idle temps are around what I was seeing from my previous tests – perhaps a few degrees higher.

Curious that you’re getting similar scores with the i5-1135G7, though that’s probably a good thing – my assumption is that there’s more than enough thermal headroom to keep the laptop running at 28W without thermal throttling/affecting performance. I was thinking that it may be possible to increase the power limits to say 45W and have the laptop running under 100F. Seems totally possible with PTM7950, though I’m not sure how to go about that. I think those limits are either set somewhere in Windows, Linux/thermald, or the firmware. If someone knows how to increase those limits please let me know!

In comparison to your graph, my thermal performance is about 9 degrees lower with the i7-1165G7 – though the Smallest FFTs run was done shortly after the Small FFTs run, so those temps may be a bit higher than running from cold.

@Jason_Dagless and @Jacob_Eva – the above two paragraphs may answer your questions, and I’m slightly embarrassed that I had to Google translate 谢谢你 but 谢谢你 for the 谢谢你 :sweat_smile:

Thanks for the info on better aligned thermal pads and bending brackets labeled 1-3. I didn’t really check the thermal pads, but I did ever so slightly bend those brackets as well. I’m not sure if it was enough to make a difference as I’m scared of damaging them haha.

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