Same ones at lower prices. I honestly think even the cheap 850 EVO's / MX300's SATA's are good enough for 95% of typical general usage / gaming rigs, but it's clear the economics of "replacing" +1TB HDD's have hit a brick wall with 2017 prices in many regions for 1TB 3D-TLC drives higher this year than some 1TB MLC's (eg, MX200) were 2 years ago.
They need to start increasing manufacturing scale (if the problem is a demand crunch caused by OEM laptops, etc, going mainstream) then working on upping those 3D layers or use that "string stacking" (ie, 3x 48-layer = 144 layers, 4x 48-layers = 192 layers, etc) if that's still a possible real "thing" beyond marketing vaporware.
Completely agree. I upgraded from a 250GB 850 EVO to a 512 GB 960 EVO NVMe. I can notice the difference in certain things, but overall I found the "upgrade" disappointing other than the increase in size.
I do think there is a place for large but relatively low performance SSD's. Today a lot of people are in the position where an SSD big enough to be their only storage (i.e. 1 TB and up) is just too expensive. So they end up with a decent SSD as a boot drive and and old fashioned spinning disk for big storage. The sort of SSD I'm thinking of could be pretty poor performance compared to a good boot drive, but still be light years faster than a spinning disk. You would still have a fast drive and a slow drive...but the slow drive would be way faster than it is now.
Another place I can see using a relatively cheap and low performance SSD is in a lot of the big OEM systems. I see a lot of systems with a decent CPU and RAM where I'm wondering why its so cheap...until I notice that its got a 1 TB HDD. I find myself thinking that this could be an OK system if I spend another $100 or so on an 850 EVO to put in it. but that $100 is for a 250 GB and that's a little tight for me. For a lot of people this would be a good place for my theoretical 1 or 2 TB slowish SSD. It might not cost much more for an OEM buying 10's of thousands of them while still giving the user some pretty OK performance compared to the HDD
So that's my take. Performance is currently good enough so now I want large but cheap SSD storage for places where zi'm willing to sacrifice some performance in the name of volume.
Edit: Here is an example. Recently I had a use case where I needed 2 TB. I found a 2 TB 7200 RPM Toshiba HDD for
$63 on Amazon. The Cheapest 2 TB SSD on Amazon is a Crucial MX300 for
$549.00. The
cheapest 1 TB SSD is $260. So if you need a lot of space, getting it on an SSD is horrendous.