Uneven CPU thermals!

I’ve been reading back on previous comments and I was wondering if I should buy a new heatsink or not. The picture of the heatsink on the marketplace looks different on the bottom than what I have. It has a silver vapor chamber and has a smooth finish on the shim. I’m just not sure if it’d be worth buying it or if the picture is just an old version of it. Also would it be worth modifying the one I already have?

Just speculation but I guess that heatsink is a new version meant for use without liquid metal. But really it wasn’t that difficult to retrofit the old one so it depends if you want to spend the money or not

Did anyone use the left over PTM on the gpu? I am thinking about doing it but not sure if it’s worth doing it or just keep the ptm for a future use

I swapped the GPU with thermal grizzly phase sheet. I now get insane amounts of coil whine under load :sweat_smile:

I believe the picture on the marketplace has always looked like that. I think it is a pre-production heatsink, not something new.

I can’t say whether or not they’ve changed the heatsink design lately, but that picture isn’t a new version.

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The GPU doesn’t seem to have the same problems, temps stay below 80 even under high load. You can keep the PTM for when you start seeing performance degradation from pump-out or similar, but you won’t see performance/temperature gains like in the case of the CPU.

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maybe I will skip it then :slight_smile:

Absolutely not. The Pictures of the Heatsink on the Marketplace are from before Batch 1 and we suspect its the more expensive Heatsink used on the review Units prerelease.
We discussed that Topic in September. And i ordered my heatsink in october and received the same already installed.

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So there will be a newly designed heatsink that will come with the “fix kit”?

We are almost heading into April and still no signs of the “fix kit” that was to be released in early 2025… still patiently waiting until warranty runs out.

Anything is possible, but nothing from Framework so far has even hinted that the heatsink itself will be changed.

Some have speculated that it’s possible, and maybe that’s the reason for the delay. But it’s pure speculation so far.

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I saw an earlier post about the soldier spilling a little out the edge under the shim of a new heatsink. Is that new heatsink a fix for the bad solder under the shim or did it have to be reshimmed too. I was wondering if it’d be worth me checking it my heatsink has the solder all the way to the edge of the shim. My last replacement mainboard was in October.

I soldered a new shim to my Vaporchamber most probably you saw my pictures.

It is unclear what the extent of the official fix FM will do is.
The shots you saw of the solder were I think, the experiment pserria ran on one of his heatsinks where he tried soldering down a replacement shim as some of the factory shims had very poor solder contact.

Just be aware, if you check the solder condition, you’re basically removing the old spreader and committing to the ptm sandwich or resoldering the shim back. You can’t place the shim back after removing it without one or the other

I decided to takeoff my cooler again and turns out that all the liquid metal pooled off the side :sob:. I’m just gonna use regular thermal paste (Noctua NT-H1) until they ship the PTM7958. I cleaned off the CPU as best as possible but I guess it’s got a stain or something. Not sure if I’ll go through the trouble of removing the shim either.




That doesn’t look good. Is the Liquid Metal suppose to clump up like that? That looks like a terrible way to evenly distribute heat for efficient dispersion.

No liquid metal is supposed to be an even smooth layer when it’s applied but when you remove the heatsink it’ll get messed up a little, but here the liquid metal pooled up on the sides over time.

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That makes me wonder if the Liquid Metal was not the right material for a portable device which is not sitting flat for 99% of the time. Laptop’s are carried, put in bags, placed sideways etc…

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It’s how I killed an 11th gen machine lol. It got out from under the heatsink somehow and got on the RAM and other spots on the board. Decided right there that the performance benefits of liquid metal couldn’t possibly be worth the risk for most applications. Switched to PTM7950 as soon as I found out about it.

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Heatsink pressure can ensure LM works in a laptop. That or a tight tolerance on the containment barrier could ensure theres always enough spread around the contact that tilting doesn’t effect pumpout.

The issue isn’t necessarily using LM, but more likely a poor heatsink design, not helped by having to do several revisions right before production due to issues by the manufacturer.
The dimpled heatspreader is a really weird design choice, and the bad soldering makes it worse.
I repasted mine initially with more LM and thermals were ok for a while but the mounting just isn’t tight enough to keep it from pumpout over time unfortunately.
PTM is much better in laptops simply because pumpout almost never occurs.

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