would it be possible for you to do a simple comparison for ssds that come with bundled "heatsinks", especially those weird unproven ones with dubious origins and technobable. As in to prove that the bundled heatsink does "something", try running with vs without, or maybe running the bundled heatsink vs one of those cheap metal heatsinks you mentioned. it might help ppl avoid ssds that markup a price just because there is an included heatsink but it does nothing. I mean if it does help then it can be considered for a markup i guess even if it throttles.
this graphene heatsink is also similar to the one on the HP FX900 PRO on my relatives laptop that I helped buy. Not surprising since its the same biwin OEM but I never found out if that heatsink worked since I had to rip it off to fit in the laptop that had a piece of metal stuck to the chassis cover with thermal pads on it to heatsink the SSDs in it.
(Yes i put a power hungry high performance nvme ssd in a laptop, but its used for multimedia work and the fast speeds is necessary at higher resolutions, the FX900 PRO was the cheapest one at that time.)
I've had a variety of SSDs with different cooling solutions so I can give you a rundown of the different solutions.
The thin graphene pads that double as a label do almost nothing. 1c under full load. They are only really useful in laptop solutions where the graphene pad might close a small gap to make contact (even then in most cases you'll still need a thermal pad).
Now some of the larger bundled heatsinks do make a difference like what you get with the kingston fury renegade or Samsung 980 Pro (assuming you purchase the models that include the heatsink). It depends on the design and amount of material but you are talking a reduction in the range of 6c - 18c under full load.
Slightly larger heatsinks you can buy for around $10 on Amazon can drop the temps even more. These are adequate for even the top performing PCIe 4.0 drives. There are more expensive M.2 heatsinks but those are not needed for PCIe 4.0 drives. In the end the more material, the more the temperature will drop usually. My motherboard's built in M.2 heatsink drops temps on my fury renegade by a good 28c and the actively cooled M.2 slot never goes above 40c. That said my last gen board (x570 taichi) did not fair nearly as well.
I've had an FX900 pro and you are going to want something decent to cool it. You are going to want to check your clearance but there are cooper shims for laptops. I remember running Anivl with and without a heatsink on that drive and without it was around 10,300 and with a decent heatsink it was around 21,000. My kingston fury renegade was even worse, only got 1/3rd of it's rated score without a heatsink.
