Sorry if this has been asked before, but I have multiple handhelds and laptops with nvme drives with no/very limited space for heatsinks.
My frustration is that while they are fast at first they all thermal throttle very quickly and slow to 80/90MBs (one in my legion go REALLY cooks and drops to 60MBs) on large transfers. Yes this is only a problem on large bulk moves but it means that imaging a drive or just moving files around on initial setup takes FOREVER. Like slower than my hdds over usb 3.
Hense I was absolutely shocked when I just transfered 500g (old sata 2.5" in external dock for game storage) in one continuous chuck at 300MBs non stop WAY WAY faster than 200GB from my origional NVME drive, starts at like 2.5GBs but drops off. (rog ally 512GB nvme In a external usb3.2, to the new 2TB internal).
I would also like to limit transfer speeds to my sd cards (just use them for bulk storage) and since they are so physically small I dont care if they take a long time to transfer (load files into main drive, let it go while I game).