There are external drives but they aren’t bare NVMe. Some may be NVMe in an external USB housing, but others have a different design.Thanks. I did think this would be the advice. Could I ask another question before I buy? I'm leaning towards buying a 2TB Fanxiang S500 Pro PCIe 3.0 (amazing xmas offer of £80 and with TB3 I doubt I'll benefit much from a faster PCIe 4.0).
One thing is concerning me a bit: I see some of these NVMe drives labelled as internal or external. Some also have an OS specified (usually Windows). Should these things be a consideration? I thought the whole concept of NVMe is it was originally designed for internal and now people are DIY'ing for external. Also, I hadn't thought of the OS. I'd just assumed I would format it for Mac and there wouldn't be a problem.
Really glad I read this thread. I went for an Orico enclosure and based on the comments here, I've chosen one with a fan. Thanks!
Generally the ones where they specify the OS are external drives which are preformatted for that OS. However, you are correct that OS doesn’t matter because you can simply reformat it to whatever OS you wish to use. However, the internal NVMe drives are generally not preformatted.
There are also NVMe drives with or without heatsinks. You want one without the heatsink.