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REPORT SUMMARY AND FINAL THOUGHTS
We don’t think that anyone would expect a performance difference between the Samsung EVO/Pro 1TB SSD and the 2TB SSD, but that’s the effect of most of us seeing flash technology increase at such a fast pace.
I could be wrong but I believe that, up until this review, we were the only ones to actually review a 2TB 2.5″ SSD and that was the Solidata K8 1920 2TB SSD in March 2013.
As you can see here, that SSD required 32 chips of NAND flash memory and 4 SandForce SF-1200 controllers just to reach SATA 2 speeds.
The issue is not so much being able to find the space for the memory as it is powering all of that memory in order to facilitate the storage, hence four controllers. Each of these memory chips was only 64GB (the max at the time) in capacity. Each of the memory modules in this 2TB Samsung 850 Pro is 256GB.
The beauty of 3D V-NAND is that much less space is required when you stack memory vertically, allowing for more capacity per memory chip and much less power to get the engine up and running.
Remember, this is not even a full size PCB!
Kudo’s to Samsung for their marketing of the 2TB capacity SSD; it has been a long time coming for so many. This 2TB capacity is as deserving, if not more so, than our original review of the 850 that garnished our Editor’s Choice Award!
Check For Samsung 850 Pro/EVO 2TB Availability at Amazon
To be frank, V-NAND was not needed for 2tb ssd.
Manufactureres can easily stuff 16 packages each having 128GB space using plain ol’ 2d nand.
Yes but…the problem then becomes one of performance versus the ability to provide the necessary power to the chips don’t you think? And how about DEVSlp?
If sandisk managed to make 4TB ssd with ordinary 2d flash, i’m sure sammy could aswell.
But in just happens that there was no demand, when 19nm was still a thing with samsung.
And i dont think 3d is all that more power efficient compared to 2d to be an excuse…
What about devsleep ? Care to elaborate ?
To compare apples to apples, the SanDisk 4TB was originally shipped as a 15mm ‘z’-height form factor, as opposed to 7mm ‘z’-height for the Sammies. I do believe that SanDisk now fits 4TB into a 9mm ‘z’-height form factor. Those “taller” ‘z’-heights won’t be fitting into too many laptops or other portable devices.
The 4 TB SSD was a dual PCB design and could never fit into a notyebook case. Further, it was noit a consumer SSD. I don’t think with the powering needs of an SSD with so many chips can DEVSLP be an option; I could be wrong.
Well, with 3D there are still the same amout of chips or dies compared to 2D.
Remember, 3D NAND has the same die size as 2D — 128Gbit.
So for 2TB, they need the same number of dies, be that 3d nand or 19nm 2D.
And fitting physically so much space was never a problem of chip density. We can do 256GB per package for quite some time now (840evo msata anyone ?).
If we put aside controller and heat limitations, we could put 4TB of flash on a standard 2.5″ formfactor , if there was demand for such drive.
Actually, according to a comment by Paul Alcorn from Tweaktown, the SanDisk 4 TB SSD has 3 PCBs: https://www.networkcomputing.com/storage/ssd-prices-in-a-freefall/a/d-id/1320958
nice review les, Might these drives push the 1/2 tb models finaly closer to the $200 price point? Im still running on my Mushkin Cronos Deluxe 120 … but I think its getting long in the tooth & while I think a move to a 256 gig SSD would probly be financialy better for me … I notice the 1/2 tb’s are getting around the $300 mark. Also my other issue is im again if you remember running a AM3+ FX cpu, so im not 100% committed to replacing the board with Zen just over a year away. Sugestions?/thought?
Thanks.
I don’t really think so. As much as we enjoy seeing the lower per GB point, these drives do not compete as they are still niche and in their own space IMO.
I do not understand how ordinary consumers feel content with new computers coming off the shelf as sluggish as it were 5 years old. In actuality I HAVE put them in 5 year old machines and it’s much much faster than those new budget machines.
Not to hijack the discussion – but any M.2 SATA 850 Pro or EVO with higher capacity, or are we stuck forever at 500GB? The technology appears to me similar, yet Samsung M.2 reached 500GB some time ago and stopped.
No newer FW-version than the one which bricked a lot of users’ 850 Pros (luckily my update went well) huh?
“Samsung has set a new bar in SSD pricing”
Are you kidding? The best bar that the Samsung 2 TB SSDs set is $0.40/GB. The competition’s 960 GB/1 TB SSDs regularly hit $350-$380, the Crucial M500 960 GB was $295-$305 until recently. This is the 840 Series all over again, where reviewers gave Samsung and their 840 Series TLC SSDs all the credit for the SSD price drops that the Crucial M500 series started.
so…. where can i buy 1 of these Beast_
Why are the PCB photos of EVO rotated the other way of the PRO? It makes it difficult to compare the chips of EVO and PRO, or was that the point?
Can I partition this SSD as a logical drive? I have a 500GB 850 EVO