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Samsung unveils 2TB 850-series SSDs

by Parm Mann on 6 July 2015, 15:00

Tags: Samsung (005935.KS)

Quick Link: HEXUS.net/qacspw

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Now in 2TB flavours: Samsung 850 Evo (left) and Samsung 850 Pro (right)

Samsung is keeping itself at the forefront of consumer SSD development with the announcement of 2TB additions to its popular 2.5in 850 Evo and 850 Pro product lines.

The South Korean tech giant has established itself as a key player in the SSD marketplace and, with reports suggesting that prices are in free fall, the race is on to increase capacity and close the gap on traditional hard disks. Indeed, with SanDisk said to be preparing 16TB SSDs for 2016, it shouldn't be long before the limitations of mechanical storage spark a widespread transition to solid-state drives.

But it hasn't always been smooth sailing for flash-based media. The initial crop of drives offered limited storage space, and while subsequent die shrinks were an obvious means of increasing capacity, the switch to smaller nodes were often accompanied by a decline in endurance and performance on regular 'flat' planar NAND.

Samsung's solution, and a key contributor to today's 2TB models, is 3D V-NAND. Essentially a means of stacking cells in vertical layers, this clever technology allowed Samsung to revert to an easier-to-manage 40nm process node, while simultaneously increasing capacity, boosting performance and extending endurance.

3D V-NAND made its debut in 2014 as part of the company's 850 Evo and 850 Pro, and Samsung feels the time is right to augment both models with a new range-topping 2TB capacity. Here's how the new additions take shape:

Samsung SSD 850 Evo Series

Model Name
MZ-75E120
MZ-75E250
MZ-75E500
MZ-75E1T0
MZ-75E2T0
Capacity
120GB
250GB
500GB
1TB (1,000GB)
2TB (2,000GB)
Controller
Samsung MGX
Samsung MEX
Samsung MHX
NAND
Samsung 3D V-NAND 3bit MLC
Onboard DRAM Cache
256MB DDR2
512MB DDR2
512MB DDR2
1GB DDR2
2GB DDR3
Interface
SATA 6Gb/s, compatible with SATA 3Gb/s and 1.5Gb/s
Sequential Read Speed
540 MB/s
540 MB/s
540 MB/s
540 MB/s
540 MB/s
Sequential Write Speed
520 MB/s
520 MB/s
520 MB/s
520 MB/s
520 MB/s
4KB Random Read (QD32)
94,000 IOPs
97,000 IOPs
98,000 IOPs
98,000 IOPs
98,000 IOPs
4KB Random Write (QD32)
88,000 IOPs
88,000 IOPs
90,000 IOPs
90,000 IOPs
90,000 IOPs
Form Factor
2.5in
Dimensions (LxWxH)
100 x 69.85 x 6.8 (mm)
Weight
Max. 66g
Supporting Features
TRIM (requires OS support), Garbage Collection, S.M.A.R.T
Data Security
AES 256-bit Full Disk Encryption (FDE)
TCG/Opal V2.0, Encrypted Drive (IEEE1667)
Reliability
MTBF (Mean Time Between Failures): 1.5 million hours
Endurance (Terabytes Written)
75 TBW
75 TBW
150 TBW
150 TBW
150 TBW
Power Consumption
Active Read/Write (Average): Max. 3.7W (2TB) / Max. 4.7W (2TB)
Idle: Max. 60mW (2TB)
Device Sleep: Max. 5mW (2TB)
Temperature
Operating: 0ºC to 70ºC
Non-Operating: -40ºC to 85ºC
Humidity
5% to 95%, Non-Condensing
Vibration
Non-Operating: 20~2,000Hz, 20G
Shock
Non-Operating: 1,500G, duration 0.5m sec, 3 axis
Warranty
5 Years or 150 TBW
MSRP (inc. VAT)
£59.49
£95.99
£160.59
£321.29
£636.99

Keeping to the familiar 2.5in form factor, the new 2TB 850 Evo SSD is priced at £637 and is able to tout the same performance characteristics as its 1TB brethren courtesy of an upgraded MHX controller and a 2GB cache of DDR3 memory.

The range-topping drive comes equipped with 128 of Samsung's 32-layer 128Gb 3D V-NAND flash chips, presumably still from a 40nm process, and is covered by warranty for five years or 150 terabytes written - whichever expires first.

Samsung SSD 850 Pro Series

Model Name
MZ-7KE128
MZ-7KE256
MZ-7KE512
MZ-7KE1T0
MZ-7KE2T0
Capacity
128GB
256GB
512GB
1TB (1,024GB)
2TB (2,048GB)
Controller
Samsung MEX
Samsung MHX
NAND
Samsung 3D V-NAND 2bit MLC
Onboard DRAM Cache
256MB DDR2
512MB DDR2
512MB DDR2
1GB DDR2
2GB DDR3
Interface
SATA 6Gb/s, compatible with SATA 3Gb/s and 1.5Gb/s
Sequential Read Speed
550 MB/s
550 MB/s
550 MB/s
550 MB/s
550 MB/s
Sequential Write Speed
470 MB/s
520 MB/s
520 MB/s
520 MB/s
520 MB/s
4KB Random Read (QD32)
100,000 IOPs
100,000 IOPs
100,000 IOPs
100,000 IOPs
100,000 IOPs
4KB Random Write (QD32)
90,000 IOPs
90,000 IOPs
90,000 IOPs
90,000 IOPs
90,000 IOPs
Form Factor
2.5in
Dimensions (LxWxH)
100 x 69.85 x 6.8 (mm)
Weight
Max. 66g
Supporting Features
TRIM (requires OS support), Garbage Collection, S.M.A.R.T
Data Security
AES 256-bit Full Disk Encryption (FDE)
TCG/Opal V2.0, Encrypted Drive (IEEE1667)
Reliability
MTBF (Mean Time Between Failures): 2 million hours
Endurance (Terabytes Written)
150 TBW
150 TBW
300 TBW
300 TBW
300 TBW
Power Consumption
Active Read/Write (Average): Max. 3.3W (2TB) / Max. 3.4W (2TB)
Idle: Max. 60mW (2TB)
Device Sleep: Max. 5mW (2TB)
Temperature
Operating: 0ºC to 70ºC
Non-Operating: -40ºC to 85ºC
Humidity
5% to 95%, Non-Condensing
Vibration
Non-Operating: 20~2,000Hz, 20G
Shock
Non-Operating: 1,500G, duration 0.5m sec, 3 axis
Warranty
10 Years or 300 TBW
MSRP (inc. VAT)
£81.59
£125.59
£224.79
£435.99
£749.99

Samsung's Pro variant continues to use less-cost-effective 3D V-NAND carrying two-bits per cell, but the drive's premium positioning brings with it enhanced longevity. Matching the existing 1TB drive in most departments, the £750 2TB 850 Pro is backed by a reassuring warranty that covers the drive for 10 years or 300 terabytes written. That's equivalent to writing just over 80GB of data every single day for an entire decade.

Commenting on the launch, Un-Soo Kim, Samsung's senior vice president of branded product marketing, stated that the company experienced a "surge in demand for 500GB and higher capacity SSDs."

"We will continue to expand our ultra-high performance and large density SSD product portfolio and provide a new computing experience to users around the globe," said Kim, whose team plans to introduce higher-capacity models in mSATA and M.2 form factors in the near future.



HEXUS Forums :: 34 Comments

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oooohh! finally a mechanical drive killer.
Nice size. Just hope the EVO doesn't go slow on me like the 840 EVO did. Firmware hassles aren't a solution.
This is a nice step, now bring on the 4 & 8TB ssds.
HavoCnMe
This is a nice step, now bring on the 4 & 8TB ssds.

…and I won't care if they're in a 3.5" format either.
Yeah, that's one thing I've never understood. Why are there no 3.5" SSD's? I mean just cram a little extra in there and you get a cheap-ish 8GB SSD…