Posted by fabius at 6:29 AM on May 1, 2021īest answer: I know this is going to be painful. But, like you, the prices now would give me pause. I usually spring for a big internal drive because it’s so much simpler to manage, and less to potentially go wrong. Or, if you don’t generally have a lot of documents but you have a massive Music library, or a massive Lightroom photo library, or loads of movies, etc, you could just keep that on the external drive. But maybe keep a separate admin user who has their user folder on the iMac still - I’m not sure if you could move the only user folder to an external drive. You could put your entire user folder on the external drive ( for example, although that’s just a random Google result). I think one thing to bear in mind is how you would organise data across two drives. On the other hand it’s easier to hide an external SSD rather than an entire iMac if you wanted to hide your important data somewhere while you were away for a period of time, for example. Likewise, if your house or office is subject to a burglary, slipping an external SSD disk in their pocket is easily done. Enclosures with 2 TB3 ports include the OWC Express 4M2 and Lacie Bolt 3.
NVMe sticks include the Samsung 970 Pro or 970 Evo Plus (a value proposition of PCIe 3.0 getting you more storage space) and the WD Black SM850 (a PCIe 4.0 device). So pick a good PCIe 3.0 NVMe stick, a solid Thunderbolt 3 enclosure - and make sure it has two ports for daisy-chaining more Thinderbolt devices - and accept that's the best you can add to the M1 Macintoshes. The kind of NVMe drive you'd consider would be PCI-Express in 4-lane configuration, so maximum of 3948 megabytes per second for PCIe 3.0 or 7896 for PCIe 4.0 - while even the fastest PCIe 4.0 drives don't sustain their peak speeds, reaching around 3000 megabytes per second due to a combination of caching and cutting back speed to avoid overheating. Best answer: Thunderbolt 3 is 40 giga bits per second which translates to 4 giga bytes per second due to 8 out of 10 bits being data and 2 in 10 being error correction.
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