The write and read speeds for a 2TB T7 are below. This is quite fast enough for editing 4K video with Final Cut Pro, DaVinci Resolve or Premier Pro. Indeed, it's in line with what full-time professional film editors have from their NAS systems.
I happen to use NVMe M.2 SSDs as well as Samsung T7 SSDs. In particular, I use Samsung Gen. 4 2TB 980 Pros. I started what is now a 6-page thread about the Mac Studio and NVMe drives, and just made two posts showing the results of setting up two 980 Pros in RAID 0. The read and write speeds are impressive in the abstract, but confer no benefit for editing 4K video. See posts #84 and #85 on page 6:
Thunderbolt 4 & NVMe M.2 External Storage: Read/Write Speeds?
Purchasing NVMe drives and enclosures for them is significantly more expensive than purchasing T7 drives. They also introduce heat management issues, and can have reliability problems.
My personal view is that there's an argument, up to about 2TB, for paying Apple for internal storage rather than buying an NVMe M.2 enclosure and drive.
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