Originally Posted by StAndrew
That's an option but heat transfer is directly and inversely related to the distance between both surfaces. Doubling the thickness of the graphene is halving your potential. I don't know how to lap a GPU block... Laping a CPU/CPU block would be a very good idea for these.
They don't conform with uneven surfaces nearly as well as thermal paste, unfortunately. They are also much thicker than the inevitable layer of thermal paste which is why they don't really compete. Even with a perfectly lapped pair of surfaces, I doubt these would do better than your average thermal paste.
I'm honestly not sure what niche these products fill. I've never been at want for thermal paste to the point that I've desired a "reusable" thermal solution.
And here we have another "expert" who hasn't tried them saying they won't work well when, in fact, individuals and reviewers who have used them say that they do work. Most report they do not cool quite as well as the better liquid and paste TIMs but that's by only around 2 degrees Centigrade, which is not even close to being enough to negate their advantages, such as not needing to be replaced every so often, being reusable, far easier to correctly apply, etc. Graphite is fairly soft so it can deform to accommodate all but the worst microscopic surface irregularities.
The first video linked did not show any actual tests. It had mostly hype by a manufacturer of a similar product.
The second video was about using conventional thermal pads, not actual graphite pads.
The third video had the hairy dude from the first video saying he was going to test graphite pads someday but also said he had preconceived notions about them.
The fourth video was an actual test of the Carbonaught graphite pads, which had roughly the same results other testers have gotten from IC's version.
Another actual test. this time on an IC pad:
Linus got roughly the same results as the Carbonaut test above.
If one is a gamer that plays on the bleeding edge of technology, then 2 degrees warmer will not be acceptable but, for most people, 2 degrees warmer is no big deal, especially those who prefer to use their computers over tinkering with them, especially if they tend to keep the same build for many years.