Due to what Samsung is citing as a surge in demand for larger capacity SSDs, they have now launched two new models offering up to two terabytes of storage each. In order to drive the extra capacity, they have also launched a new SSD controller in the MHX controller. Our resident SSD expert Kristian expects the MHX to be similar in design to the MEX controller, but with additional DRAM to track the extra blocks.

The 2TB 850 EVO leverages the same 32-layer 128 Gbit TLC V-NAND that we have already seen in the smaller capacity 850 EVO products, but the 850 PRO will use a new 128 Gbit 2-bit MLC die, but still at 32-layers. It should be a nice addition to the 850 PRO series, especially with the rise of 4K video and the extra storage it requires.

Samsung 2TB SSD Specifications
Model 850 PRO 850 EVO
Controller Samsung MHX
NAND Samsung 128Gbit 40nm MLC V-NAND 32-layers Samsung 128Gbit 40nm TLC V-NAND 32-layers
Sequential Read 550MB/s 540MB/s
Sequential Write 520MB/s 520MB/s
4KB Random Read 100K IOPS 98K IOPS
4KB Random Write 90K IOPS 90K IOPS
Power 5mW (DevSLP) / 3.3W (read) / 3.4W (write) 5mW (DevSLP) / 3.7W (read) / 4.7W (write)
Encryption AES-256, TCG Opal 2.0 & IEEE-1667 (eDrive supported)
Endurance 300TB 150TB
Warranty 10 years 5 years
Price $1000 $800

Samsung will still package these drives in the same 7mm 2.5” SSD enclosure which means they will be SATA based for now, but Samsung has said they will be moving their 3D NAND to mSATA and M.2 form factors as well. Endurance ratings for the drives are 10 years or 300 TBW (Terabytes Written) for the PRO, and 5 years or 150 TBW for the EVO model.

The 850 Pro retails for $1000, and the 850 EVO retails for $800. Although not inexpensive by any means, and still much more than the $75 of a spinning disk, the prices are right around double the 1TB models in the lineup so there is not any extra premium to get the larger models at this time.

Kristian should have a full review of the new models soon.


Source: Samsung

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  • mapesdhs - Wednesday, July 8, 2015 - link

    Try SAS instead, I get 750MB/sec with four old 15Ks, while these days just a single Toshiba 2.5" 15K can do 170MB/sec to 230MB/sec (avg 204).
  • DukeN - Thursday, July 9, 2015 - link

    the magic here depends a lot on the RAID hardware used - those 15K SAS drives are pretty awesome. Some of the newer RAID cards let you put a few of those in RAID and put an SSD in front of the array as well.
  • WinterCharm - Tuesday, July 7, 2015 - link

    You'd have to be insane to try and edit 4K video on a hard drive. Slow as fuck, especially when you start working with multiple large clips, and 4-8 lanes of video at once for some of the more complex effects.

    Storage speed is a *must* when working with 4K.

    6 of these drives in Raid = 4K editing bliss.
  • crimsonson - Tuesday, July 7, 2015 - link

    You likely run out of GPU and/or CPU power once you reach that many 4K streams, especially if you are handling compressed video formats like XAVC, RED and various H.264 flavors.
  • AndrewJacksonZA - Wednesday, July 8, 2015 - link

    @WinterCharm: I think you might want six of these, they're 6TB, not 2TB. :-)

  • letmepicyou - Tuesday, July 7, 2015 - link

    4k video? To heck with 4k video, having a 2TB SSD will help me get more chicks! Me: "Hey, ladies, guess who has a 2 TB SSD?" Hot ladies: "Ooooh!" *swoon*
    *Tents fingertips*..."Excellent!"
  • WinterCharm - Tuesday, July 7, 2015 - link

    You mean more pr0n on your hard drive?
  • kissiel - Tuesday, July 7, 2015 - link

    150TB/2TB = 75 cycles.
    Which is <100h of constant write @ full speed.
    That's "OMG" bad.
  • GTRagnarok - Tuesday, July 7, 2015 - link

    Calling it endurance in the chart is a little misleading. 150TB is only what Samsung will cover under warranty so 5 years or 150TB of writes, whichever comes first. Doesn't seem like a lot, but that's 50GB of writes everyday for 8 years. Very, very few people, if anyone, will surpass 150TB within 5 years.

    The actual endurance is more like 2,000 cycles as covered in another article here:

    For the 2TB 850 EVO, that's 4000TB of writes so go nuts.
  • kissiel - Tuesday, July 7, 2015 - link

    Or 150TB before it will start shrinking usable capacity...
    And you're right, this shouldn't be a problem. Yet, when I think how often I do rearrangements of data on my different machines, and how often I find myself filling ssds to the brim and then emptying it, I start to worry. Maybe too much. Time will tell :-)

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