The Samsung 850 EVO 4TB SSD Review
by Billy Tallis on July 11, 2016 10:00 AM ESTATTO
ATTO's Disk Benchmark is a quick and easy freeware tool to measure drive performance across various transfer sizes.
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The ATTO plot for the 4TB 850 EVO shows no problems and very slightly better read speeds than the 2TB 850 EVO.
AS-SSD
AS-SSD is another quick and free benchmark tool. It uses incompressible data for all of its tests, making it an easy way to keep an eye on which drives are relying on transparent data compression. The short duration of the test makes it a decent indicator of peak drive performance.
As expected, the AS-SSD results are unremarkable. Even if the new V-NAND were slower, the 4TB drive has more than enough parallelism to provide peak performance that saturates the SATA link.
Idle Power Consumption
Since the ATSB tests based on real-world usage cut idle times short to 25ms, their power consumption scores paint an inaccurate picture of the relative suitability of drives for mobile use. During real-world client use, a solid state drive will spend far more time idle than actively processing commands. Our testbed doesn't support the deepest DevSlp power saving mode that SATA drives can implement, but we can measure the power usage in the intermediate slumber state where both the host and device ends of the SATA link enter a low-power state and the drive is free to engage its internal power savings measures.
We also report the drive's idle power consumption while the SATA link is active and not in any power saving state. Drives are required to be able to wake from the slumber state in under 10 milliseconds, but that still leaves plenty of room for them to add latency to a burst of I/O. Because of this, many desktops default to either not using SATA Aggressive Link Power Management (ALPM) at all or to only enable it partially without making use of the device-initiated power management (DIPM) capability. Additionally, SATA Hot-Swap is incompatible with the use of DIPM, so our SSD testbed usually has DIPM turned off during performance testing.
The 4TB EVO has slightly lower idle power consumption than the 2TB EVO, but both still draw twice as much power in the slumber state as the smaller 850 EVOs with the MEX and MGX controllers.
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Adm_SkyWalker - Monday, July 11, 2016 - link
At CES Mushkin said they were planning on releasing a 4TB SSD by the end of the year. They are targeting a $500 price point. Unless they scrapped it, this could be a cheaper option before the end of the year.http://techreport.com/news/29583/mushkin-previews-...
http://techreport.com/news/29583/mushkin-previews-...
Kristian Vättö - Monday, July 11, 2016 - link
It was a misinterpretation. The $500 price point was for the 2TB drive, with the price of the 4TB being unannounced (likely a double at least).http://www.anandtech.com/comments/9986/ces-2016-ro...
Adm_SkyWalker - Tuesday, July 12, 2016 - link
I should of figured it was to good to be true. Still a competing $1000 drive could convince Samsung to lower their price. Assuming the speed is comparable between the two.aggiechase37 - Monday, July 11, 2016 - link
Way WAY WAAAAYYY too expensive. For this price you could get piece together a RAID configuration out of regular HDD and get a decent amount of the same performance AND the added bonus of having redundancy in the case of a drive failure. Can't see who purchases this.Chloiber - Monday, July 11, 2016 - link
Not sure why anyone would want to buy this when you can get a 4TB Samsung P863 Enterprise SSD for 300$ more...Taracta - Monday, July 11, 2016 - link
Isn't the 25% over-provisioning getting a bit much for these larger SSDs? Does a 4TB SSD really need 1TB over-provisioning to max-out relative performance? Would 10% be enough for these large drives?Billy Tallis - Monday, July 11, 2016 - link
That is something I've wondered about and will probably look in to eventually, but it would be pretty time consuming to test and isn't something I can see adding to the routine suite of benchmarks.Impulses - Monday, July 11, 2016 - link
Something to ask Samsung tho?Taracta - Thursday, July 14, 2016 - link
Thanks for your reply. I believe that you should just test this 4TB SSD for now to see the impact and another couple of different ~4TB SSDs when available to compare with these results. Forget about the lesser drives, too many and too late.ACE76 - Monday, July 11, 2016 - link
hopefully we see more manufacturers release 4tb and greater SSDs...these drives will end the need for platter based hard drives for good...price is too high right now but it should come down over the next 6 months to a year.