Hello, my question is: is there big difderwnce in making m.2 nvme disk with storage of 250gb instead of 1TB or more? Maybe it is stupid question. Is there physical difference?
Why make 4 cylinder engines when you can get 12 cylinder engines instead?
(cost, hardware requirements or restrictions, use case…)
More nand flash chips means more cost. Those chips are the highest cost in the BOM, so if a customer only needs 250GB, having a product for them means a sale instead of not a sale.
A drive with one of these:
https://www.arrow.com/en/products/sm662gxe-bds/silicon-motion-technology
Would have $14.48 of nand chips.
A drive with four of them would have $57.92 of nand chips.
Using this image as a visual, each of the black squares is a NAND flash memory chip. If you want more storage on the device, it needs more chips on the board.
Density can vary between manufacturers, some 256 might only use one NAND chip, others may need two or more, but going up to 1TB there will generally need at least 4.
There’s plenty of garbage M.2 ssds out there with only 1 nand chip for 1TB. Pretty much any time you sort by price low to high you’ll see some of the most dire SSDs you’ve ever seen in your life. They suck too, quad chip ones are almost guaranteed to be lightyears faster.
For commercial stuff, 256 and 512 are enough. Anything more, users will fill that shit up to the brim and now you got a deal with a TB of user crap rather than 256. At least in my experience.
Yes. NAND is also quite expensive and is the main difference between the two. Also for a 2230 size it’s significantly more compact than a 2280, so you’ll find bigger price differences on small form factor drives than large form factor.
