I recently bought a 7000MB/s NVMe drive from Crucial along with an enclosure, but I've been experiencing some strange issues. It seems to freeze at a certain speed for about a minute, then speeds up or slows down again, but the progress remains at 0% the entire time. For an 80GB file, it's giving me an estimated transfer time of over a day! Interestingly, it can transfer small files just fine, but it really struggles with larger files, even those around 10MB.
4 Answers
Keep in mind that connection types impact transfer speeds too. Thunderbolt can manage about 3,750 MB/s, and USB 3.2 Gen 2x2 around 2,000 MB/s. Make sure your computer's ports are up to speed as well; some older USB connections might be really slow.
Different enclosures can have vastly different performance levels. It might be worth checking if your enclosure is rated well for speeds, as some just can't keep up with those high numbers.
It sounds like you might have a faulty drive or enclosure. A good test would be to try connecting the drive directly to an internal M.2 slot on your motherboard to see if it improves performance.
Moving smaller files is generally easier because they fill up the cache on the drive, allowing for quicker transfers. Bigger files can max out that cache. If your NVMe lacks a sufficient cache — which cheaper models sometimes do — it can lead to drastically reduced speeds, similar to copying to a regular HDD.
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