The Samsung 850 EVO 4TB SSD Review
by Billy Tallis on July 11, 2016 10:00 AM ESTAnandTech Storage Bench - Heavy
Our Heavy storage benchmark is proportionally more write-heavy than The Destroyer, but much shorter overall. The total writes in the Heavy test aren't enough to fill the drive, so performance never drops down to steady state. This test is far more representative of a power user's day to day usage, and is heavily influenced by the drive's peak performance. The Heavy workload test details can be found here.
The 4TB 850 EVO is slightly faster overall on the Heavy test than the 2TB 850 EVO, so it takes over as the fastest TLC drive. The 1TB and 2TB 850 Pros are only a little faster.
Average service time of the 4TB 850 EVO has regressed somewhat compared to the 1TB and 2TB models, but it still can't be beat by TLC from anybody other than Samsung.
The quantity of latency outliers experienced by the 4TB 850 EVO places it at the bottom of the highest tier of drives and below the 1TB and 2TB models.
The 4TB 850 EVO uses very slightly more power than the 2TB, but both are much more efficient than the 1TB model and score reasonably well given the high capacity.
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nandnandnand - Monday, July 11, 2016 - link
Weren't the first XPoint parts going to be 16-32 GB? I find $0.65/GB hard to believe... I expect $3.00/GB.nathanddrews - Monday, July 11, 2016 - link
Yeah, I'll believe it when I see it.Kevin G - Monday, July 11, 2016 - link
Where are you seeing this and for what format?I strongly suspect that Intel is going to be price competitive in the NVMe space so that's realistic but I'd expect a massive premium for Xpoint in DIMM format when Skylake-E comes around.
shabby - Monday, July 11, 2016 - link
Why would xpoint dimm be premium priced? They said its slower than dimm, so it should be cheaper.Kevin G - Monday, July 11, 2016 - link
Well what competition would the DIMM format have on SkyLake-E?SATA based SSDs are a dime a dozen and M.2 drives using NVMe are just starting to spread. What competition would Intel have with a DIMM format?
Impulses - Monday, July 11, 2016 - link
There's a lot of pie in the sky dreaming about Xpoint IMO... Why would it be priced at a premium? Same reason M.2 NVMe & PCI-E drives are, it's what the market will bear that counts. If it's any faster it'll be more expensive, simple really.ddriver - Monday, July 11, 2016 - link
Don't hold your breath. They made claims of "ram" speed, but demoed 2 GB/s hardware, which is not much faster than nvme SSDs. Ram is 20-30 GB/s...SSDs can still go a long way in terms of bandwidth - just snap more chips on more channels, given an available interface to hook it to, it would be too much trouble for the industry to create something like 8 GB/s SSD. And it only requires a better controller chip, can work with the same old flash memory chips. Currently, M2 can only provide theoretical 4 GB/s bandwidth, running at 32 gbit.
Eden-K121D - Monday, July 11, 2016 - link
a PCIe gen4 device could have potential read speeds of 8GB/sKevin G - Monday, July 11, 2016 - link
The 2 GB/s demo was using a Thunderbolt enclosure and an M.2 prototype.Full size PCIe and DIMM formats are planned so I'd consider that 2 GB demo the starting point.
benedict - Monday, July 11, 2016 - link
Horrible write endurance. If you need a drive that big you certainly have enough data to fill it 75 times.