Samsung 850 PRO SSD 256 Gigabyte Review
Category : Storage
Published by Marc Büchel on 15.09.14
The 850 PRO 256 GB is Samsung's flagship consumer-grade SATA SSD. The series features Samsungs latest 3D V-NAND with 24 layers and 128Gbit density. Thanks to this NAND flash memory the drive features a high endurance rating and apart from that also performance should be on a seriously high level.



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Specifications / Delivery


Model 850 PRO 128 GB 850 PRO 256 GB 850 PRO 512 GB 850 PRO 1 TB
Capacity 128 GB 256 GB 512 GB 1024 GB
Form Factor 2.5'' 2.5'' 2.5'' 2.5''
Controller Samsung 3-core MEX  Samsung 3-core MEX Samsung 3-core MEX Samsung 3-core MEX
Memory
  • MLC NAND
  • 3D V-NAND 2bit
  • MLC NAND
  • 3D V-NAND 2bit
  • MLC NAND
  • 3D V-NAND 2bit
  • MLC NAND
  • 3D V-NAND 2bit
Throughput
  • 520 MB/s sequential read
  • 470 MB/s sequential write
  • 100'000 IOPS 4K random read
  • 90'000 IOPS 4K random write
  • 550 MB/s sequential read
  • 520 MB/s sequential write
  • 100'000 IOPS 4K random read
  • 90'000 IOPS 4K random write
  • 550 MB/s sequential read
  • 520 MB/s sequential write
  • 100'000 IOPS 4K random read
  • 90'000 IOPS 4K random write
  • 530 MB/s sequential read
  • 410 MB/s sequential write
  • 87'000 IOPS 4K random read
  • 14 '000 IOPS 4K random write
Power Consumption
  • 3.3 Watt read
  • 3.0 Watt write
  • 0.4 Watt idle
  • 3.3 Watt read
  • 3.0 Watt write
  • 0.4 Watt idle
  • 3.3 Watt read
  • 3.0 Watt write
  • 0.4 Watt idle
  • 3.3 Watt read
  • 3.0 Watt write
  • 0.4 Watt idle
Temperature
  • Operating: 0°C bis 70°C
  • Non-Operating: -40°C bis 85°C
  • Operating: 0°C bis 70°C
  • Non-Operating: -40°C bis 85°C
  • Operating: 0°C bis 70°C
  • Non-Operating: -40°C bis 85°C
  • Operating: 0°C bis 70°C
  • Non-Operating: -40°C bis 85°C
Endurance 150 TBW 150 TBW 150 TBW 150 TBW
Warranty 10 Years 10 Years 10 Years 10 Years
Price





Not long ago Samsung announced three new SSD series. There is the 850 PRO for endusers and the 845DC EVO as well as the 845DC PRO for data centers. In the case of the 850 PRO the most significant upgrade comes with the NAND Flash. Samsung is now bringing 3D V-NAND to the mass market and therefore increasing reliability and endurance. To be a bit more precise the drive boasts 24 layer 3D V-NAND with 40nm structures. Apart from that density is a 128Gbit and over time Samsung wants to increase this value to a whopping 1 TBit.

A closer look at the 850 PRO reveals that the 256 Gigabyte version is capable of delivering high performance already with low capacity. It appears that the new 3D V-NAND can deliver high performance as well as high endurance in combination with Samsungs latest MEX controller. When it comes to endurance Samsung is saying that the 850 PRO should be able to survive 150 TBW. Compared to the datacenter drives, where Samsung communicates 10 drive writes per day, the value of 150 TBW is rather low. We believe the maker is advertising a low value and in real life the drive is capable of withstanding way higher TBW numbers.

If we start looking for the controller, we see there is the Samsung MEX model. This controller clocks 100 MHz higher than the predecessor, which ran by the name MDX. The fact that this version of the controller clocks 100 MHz faster might also be the reason why the 850 PRO is a bit quicker than the datacenter versions, which use the MDX controller but also feature 3D V-NAND.
Last but not least let us have a quick look at the exterior. The Samsung 850 PRO is only available with a 2.5 inch casing measuring 7 millimeter in height. In case of the interface you get SATA 3.1. We're rather curious to see wether Samsung is planning on releasing an M.2 version of this drive or not.
Page 1 - Introduction Page 7 - Random read KByte/s
Page 2 - Impressions Page 8 - Random write IOPS
Page 3 - How do we test? Page 9 - Random read IOPS
Page 4 - Sequential write KByte/s Page 10 - QD1/4/8/16/32 Performance
Page 5 - Sequential read KByte/s Page 11 - Conclusion
Page 6 - Random write KByte/s  
[pagebreak]

Impressions


   

   

   



Page 1 - Introduction Page 7 - Random read KByte/s
Page 2 - Impressions Page 8 - Random write IOPS
Page 3 - How do we test? Page 9 - Random read IOPS
Page 4 - Sequential write KByte/s Page 10 - QD1/4/8/16/32 Performance
Page 5 - Sequential read KByte/s Page 11 - Conclusion
Page 6 - Random write KByte/s  
[pagebreak]

How do we test?

Testenvironment

Models
ADATA S511 60 GB
ADATA S511 SSD 120 GB
ADATA XPG mSATA SSD SX300 128 GB
Corsair Force 3 120 GB
Corsair Force GS 240 GB
Corsair Force GT 120 GB
Corsair Neutron GTX 240 GB
Crucial M500 480 GB
Extrememory XLR8 Express 120 GB
Intel SSD 335 Series 240 GB
Intel SSD 520 180 GB
Intel SSD 520 240 GB
Intel X25-M 80 GB
Intel X25-M Gen2 34nm 160 GB
Kingmax SMP35 Client 240 GB n/A
Kingston HyperX SSD 120 GB
Kingston HyperX 3K SSD 120 GB
Kingston HyperX SSD 240 GB
Kingston SSDNow V+ 200 90 GB
OCZ Agility 3 240 GB
OCZ Agility 4 256 GB
OCZ IBIS 240 GB
OCZ Octane 512 GB
OCZ Octane 1 TB
OCZ RevoDrive 3 240 GB
OCZ RevoDrive 3 X2 480 GB PCIe-SSD
OCZ RevoDrive X2 480 GB PCIe-SSD
OCZ RevoDrive Hybrid 120GB SSD, 1TB HDD
OCZ Synapse 64 GB
OCZ Deneva 2 200 GB eMLC
OCZ Vector 150 240 GB
OCZ Vector 256 GB
OCZ Vertex 3 240 GB
OCZ Vertex 3.20 120 GB
OCZ Vertex 3.20 240 GB
OCZ Vertex 4 256 GB
OCZ Vertex 4 512 GB
OCZ Vertex 450 256 GB
OCZ Vertex 460 120 GB
OCZ Vertex 460 240 GB
Plextor M5Pro 256 GB
Samsung PM830 SSD 128 GB
Samsung PM830 SSD 256 GB
Smasung 840Evo 120 GB
Samsung 840Evo 250 GB mSATA
Samsung 840Evo 1 TB
Samsung 840 PRO 256 GB
Samsung 850 PRO 256 GB
Samsung 850DC EVO 960 GB
Samsung 845DC PRO 800 GB
SanDisk Extreme SSD 120 GB
SanDisk Extreme SSD 240 GB
Toshiba THNSNF512GCSS 512 GB n/A
 

Testenvironment

Motherboard ASUS Maximus VII Gene
Chipset Intel Z97
CPU Intel Core i7-4700k
Memory G.Skill Ares 2133 MHz
Graphics card ASUS GeFroce GTX 680
Storage (system) Intel SSD 335 Series
Operating systems Windows 7 64 Bit with caching drives


iozone

iozone3 is a benchmark suite for storage solutions which natively runs under Windows/Linux.

We are testing the throughput rates/IOPS with different block sizes using the following commands:

KByte/s

iops



Page 1 - Introduction Page 7 - Random read KByte/s
Page 2 - Impressions Page 8 - Random write IOPS
Page 3 - How do we test? Page 9 - Random read IOPS
Page 4 - Sequential write KByte/s Page 10 - QD1/4/8/16/32 Performance
Page 5 - Sequential read KByte/s Page 11 - Conclusion
Page 6 - Random write KByte/s  
[pagebreak]

KByte/s, Sequential write

Sequential write
Bewertung
Throughput 256 KByte Block Size
OCZ RevoDrive 3 X2 480 GB PCIe-SSD
1'291'486
OCZ RevoDrive 3 240 GB
No Review
771'043
OCZ RevoDrive Hybrid 120GB SSD, 1TB HDD
750'096
OCZ RevoDrive X2 480 GB PCIe-SSD
694'586
OCZ IBIS 240 GB
680'372
Samsung 840 Pro 256 GB 536'082
OCZ Vector 150 240 GB 534'262
OCZ Vector 256 GB
534'058
OCZ Deneva 2 200 GB eMLC 533'969
Intel SSD 335 Series 240 GB
No Review
533'672
Samsung 850 Pro 256 GB 531'027
OCZ Vertex 450 256 GB 522'897
Corsair Force GS 240 GB
522'613
OCZ Vertex 3 240 GB
522'212
Kingmax SMP35 Client 240 GB
519'430
Kingston HyperX SSD 240 GB
519'190
Corsair Neutron GTX 240 GB
519'104
OCZ Vertex 3.20 240 GB
517'290
Intel SSD 520 240 GB
516'603
Kingston HyperX SSD 120 GB
515'218
OCZ Vertex 4 256 GB
513'309
Corsair Force GT 120 GB
512'676
Intel SSD 520 180 GB
No Review
512'628
SanDisk Extreme SSD 240 GB
No Review
511'805
OCZ Vertex 3.20 120 GB
510'245
SanDisk Extreme SSD 120 GB
507'743
Kingston HyperX 3K SSD 120 GB
505'669
Toshiba THNSNF512GCSS 512 GB
No Review
504'589
Kingston SSDNow V+ 200 90 GB
502'272
Samsung 845DC PRO 800 GB 500'153
ADATA XPG mSATA SSD SX300 128 GB 499'239
Extrememory XLR8 Express 120 GB
491'205
OCZ Synapse 64 GB
469'784
Samsung 840 Evo 1 TB
462'097
ADATA S511 60 GB 457'001
Plextor M5 Pro 256 GB
No Review
444'122
Crucial M500 480 GB
No Review
439'829
Samsung 850DC EVO 960 GB
436'531
OCZ Vertex 4 512 GB 434'466
OCZ Vertex 460 120 GB 421'139
OCZ Agility 4 256 GB 405'911
ADATA S511 SSD 120 GB
343'488
Corsair Force 3 120 GB
328'922
Samsung 840 Evo 250 GB mSATA
No Review
324'238
Samsung PM830 SSD 256 GB
321'474
OCZ Octane 1 TB 314'144
OCZ Octane 512 GB
307'781
Samsung PM830 SSD 128 GB
271'696
OCZ Agility 3 240 GB
266'401
Samsung 840Evo 120 GB
No Review
219'159
Intel X25-M Gen2 34nm 160 GB
80'719
Intel X25-M 80 GB
77'257


Page 1 - Introduction Page 7 - Random read KByte/s
Page 2 - Impressions Page 8 - Random write IOPS
Page 3 - How do we test? Page 9 - Random read IOPS
Page 4 - Sequential write KByte/s Page 10 - QD1/4/8/16/32 Performance
Page 5 - Sequential read KByte/s Page 11 - Conclusion
Page 6 - Random write KByte/s  
[pagebreak]

KByte/s, Sequential Read

Sequential Read
Bewertung
Throughput 256 KByte Block Size
OCZ RevoDrive 3 X2 480 GB PCIe-SSD 1'460'560
OCZ RevoDrive 3 240 GB
No Review
857'972
OCZ IBIS 240 GB 806'858
OCZ RevoDrive Hybrid 120GB SSD, 1TB HDD 729'929
OCZ RevoDrive X2 480 GB PCIe-SSD 716'357
OCZ Vector 256 GB
553'400
Samsung 850 Pro 256 GB 548'836
OCZ Vector 150 240 GB 547'188
Intel SSD 520 240 GB 545'843
Intel SSD 520 180 GB
No Review
545'656
Samsung 840 Pro 256 GB 545'353
Samsung 845DC PRO 800 GB 544'499
ADATA XPG mSATA SSD SX300 128 GB 543'650
ADATA S511 SSD 120 GB 542'606
Corsair Neutron GTX 240 GB
542'442
OCZ Vertex 4 512 542'075
Samsung 850DC EVO 960 GB
541'626
Kingston HyperX SSD 120 GB 541'613
Intel SSD 335 Series 240 GB
No Review
541'542
Corsair Force GS 240 GB
541'086
OCZ Deneva 2 200 GB eMLC 540'973
Toshiba THNSNF512GCSS 512 GB
No Review
539'056
Samsung PM830 SSD 128 GB
539'754
Corsair Force GT 120 GB 539'648
Kingston HyperX SSD 240 GB 537'745
ADATA S511 60 GB 537'560
OCZ Vertex 4 256 536'605
Samsung 840 Evo 1 TB
536'542
OCZ Vertex 3 240 GB 534'988
OCZ Vertex 3.20 240 GB
534'392
OCZ Vertex 450 256 GB 534'241
Samsung PM830 SSD 256 GB 534'154
Samsung 840 Evo 250 GB mSATA
No Review
532'816
Plextor M5 Pro 256 GB
No Review
530'606
OCZ Vertex 3.20 120 GB
530'584
Kingston HyperX 3K SSD 120 GB 529'995
SanDisk Extreme SSD 240 GB
No Review
529'520
OCZ Vertex 460 120 GB 529'462
Crucial M500 480 GB
No Review
525'278
Extrememory XLR8 Express 120 GB 521'930
OCZ Agility 3 240 GB 516'479
Kingston SSDNow V+ 200 90 GB 510'372
SanDisk Extreme SSD 120 GB 507'743
Samsung 840Evo 120 GB
No Review
504'587
Kingmax SMP35 Client 240 GB
498'223
Corsair Force 3 120 GB 490'777
OCZ Synapse 64 GB 441'396
OCZ Octane 1 TB 440'052
OCZ Octane 512 GB 438'465
Intel X25-M Gen2 34nm 160 GB 247'759
Intel X25-M 80 GB 240'404
OCZ Agility 4 256 GB 209'723


Page 1 - Introduction Page 7 - Random read KByte/s
Page 2 - Impressions Page 8 - Random write IOPS
Page 3 - How do we test? Page 9 - Random read IOPS
Page 4 - Sequential write KByte/s Page 10 - QD1/4/8/16/32 Performance
Page 5 - Sequential read KByte/s Page 11 - Conclusion
Page 6 - Random write KByte/s  
[pagebreak]

KByte/s, Random write

Random write
Bewertung
Throughput 4 KByte Block Size
OCZ RevoDrive 3 X2 480 GB PCIe-SSD 756'658
Samsung 840 Pro 256 GB 412'837
OCZ RevoDrive 3 240 GB
No Review
382'970
OCZ Vertex 4 512 GB 362'053
Samsung 850 Pro 256 GB 360'357
OCZ Vector 150 240 GB 356'006
OCZ Vertex 4 256 GB 354'573
OCZ Vector 256 GB
354'246
Samsung 850DC EVO 960 GB
346'184
Crucial M500 480 GB
No Review
346'003
Samsung 840 Evo 1 TB
344'730
Samsung 845DC PRO 800 GB 343'726
OCZ Agility 4 256 GB 341'478
OCZ Octane 1 TB 325'007
OCZ Octane 512 GB 324'023
Corsair Force GS 240 GB
301'486
Samsung 840 Evo 250 GB mSATA
No Review
299'848
OCZ Vertex 450 256 GB 292'401
SanDisk Extreme SSD 240 GB
No Review
287'255
OCZ Vertex 3.20 240 GB
286'949
Corsair Neutron GTX 240 GB
285'558
OCZ Vertex 460 120 GB 285'407
Intel SSD 520 180 GB
No Review
284'858
Intel SSD 520 240 GB 283'794
OCZ Deneva 2 200 GB eMLC 283'409
OCZ Vertex 3.20 120 GB
282'578
Kingston HyperX SSD 240 GB 280'556
Kingston HyperX 3K SSD 120 GB 279'967
Kingston SSDNow V+ 200 90 GB 276'859
OCZ Vertex 3 240 GB 275'499
ADATA XPG mSATA SSD SX300 128 GB 264'870
OCZ IBIS 240 GB 262'687
Intel SSD 335 Series 240 GB
No Review
262'005
Kingston HyperX SSD 120 GB 255'988
Plextor M5 Pro 256 GB
No Review
254'918
Corsair Force GT 120 GB 253'269
SanDisk Extreme SSD 120 GB 252'045
ADATA S511 SSD 120 GB 244'150
ADATA S511 60 GB 226'394
OCZ Agility 3 240 GB 242'683
Extrememory XLR8 Express 120 GB 237'082
Corsair Force 3 120 GB 225'092
OCZ RevoDrive Hybrid 120GB SSD, 1TB HDD 213'027
OCZ Synapse 64 GB 200'308
Samsung PM830 SSD 256 GB 156'814
OCZ RevoDrive X2 480 GB PCIe-SSD 156'644
Samsung 840Evo 120 GB
No Review
148'166
Samsung PM830 SSD 128 GB
132'997
Toshiba THNSNF512GCSS 512 GB
No Review
95'808
Kingmax SMP35 Client 240 GB
94'447
Intel X25-M Gen2 34nm 160 GB 62'388
Intel X25-M 80 GB 48'194


Page 1 - Introduction Page 7 - Random read KByte/s
Page 2 - Impressions Page 8 - Random write IOPS
Page 3 - How do we test? Page 9 - Random read IOPS
Page 4 - Sequential write KByte/s Page 10 - QD1/4/8/16/32 Performance
Page 5 - Sequential read KByte/s Page 11 - Conclusion
Page 6 - Random write KByte/s  
[pagebreak]

KByte/s, Random read

Random read
Bewertung
Throughput 4 KByte Block Size
OCZ RevoDrive 3 X2 480 GB PCIe-SSD 640'327
Samsung 840 Evo 250 GB mSATA
No Review
400'192
Plextor M5 Pro 256 GB
No Review
392'851
Samsung 850 Pro 256 GB 390'689
Samsung 840 Evo 1 TB
384'527
OCZ Vector 256 GB
381'510
Toshiba THNSNF512GCSS 512 GB
No Review
373'590
OCZ Vertex 4 512 GB 368'728
Samsung 845DC PRO 800 GB 368'001
OCZ RevoDrive 3 240 GB
No Review
364'987
Corsair Neutron GTX 240 GB
359'009
OCZ IBIS 240 GB 357'112
Samsung 840 Pro 256 GB 353'123
Samsung 850DC EVO 960 GB
349'781
OCZ Vertex 4 256 GB 348'881
Samsung 840Evo 120 GB
No Review
348'724
Crucial M500 480 GB
No Review
346'164
OCZ Vertex 450 256 GB 337'922
OCZ Vector 150 240 GB 328'627
Samsung PM830 SSD 256 GB 310'109
OCZ Vertex 460 120 GB 309'467
Intel SSD 520 240 GB 283'794
OCZ Agility 4 256 GB 255'743
Kingmax SMP35 Client 240 GB
231'999
OCZ Deneva 2 200 GB eMLC 226'958
Intel SSD 520 180 GB
No Review
212'409
OCZ Vertex 3.20 240 GB
171'179
Intel SSD 335 Series 240 GB
No Review
171'684
Kingston HyperX SSD 240 GB 168'648
OCZ Vertex 3 240 GB 167'922
Corsair Force GS 240 GB
163'408
Samsung PM830 SSD 128 GB
151'097
Extrememory XLR8 Express 120 GB 149'622
OCZ Agility 3 240 GB 142'942
SanDisk Extreme SSD 240 GB
No Review
141'910
OCZ Octane 1 TB 126'603
OCZ Octane 512 GB 123'553
ADATA XPG mSATA SSD SX300 128 GB 102'038
Kingston HyperX 3K SSD 120 GB 102'031
Corsair Force GT 120 GB 98'387
Kingston HyperX SSD 120 GB 96'042
ADATA S511 SSD 120 GB 95'928
SanDisk Extreme SSD 120 GB 93'316
Kingston SSDNow V+ 200 90 GB 89'121
OCZ RevoDrive Hybrid 120GB SSD, 1TB HDD 87'188
Corsair Force 3 120 GB 84'113
OCZ Vertex 3.20 120 GB
81'160
Intel X25-M Gen2 34nm 160 GB 58'647
ADATA S511 60 GB 51'187
OCZ Synapse 64 GB 47'918
OCZ RevoDrive X2 480 GB PCIe-SSD 43'003
Intel X25-M 80 GB 30'287


Page 1 - Introduction Page 7 - Random read KByte/s
Page 2 - Impressions Page 8 - Random write IOPS
Page 3 - How do we test? Page 9 - Random read IOPS
Page 4 - Sequential write KByte/s Page 10 - QD1/4/8/16/32 Performance
Page 5 - Sequential read KByte/s Page 11 - Conclusion
Page 6 - Random write KByte/s  
[pagebreak]

IOPS, Random write

Random write
Bewertung
IOPS 4 KByte Block Size
OCZ RevoDrive 3 X2 480 GB PCIe-SSD 189'164
OCZ RevoDrive 3 240 GB
No Review
95'782
Samsung 850 Pro 256 GB 91'053
OCZ Vertex 4 512 GB 90'519
Crucial M500 480 GB
No Review
88'642
OCZ Vector 256 GB
88'537
OCZ Vertex 4 256 GB 88'460
Samsung 850DC EVO 960 GB
86'634
Samsung 845DC PRO 800 GB 85'813
Samsung 840 Evo 1 TB
85'792
OCZ Agility 4 256 GB 85'373
OCZ Vector 150 240 GB 81'175
Samsung 840 Evo 250 GB mSATA
No Review
76'721
Corsair Force GS 240 GB
75'577
OCZ Vertex 450 256 GB 74'983
OCZ Deneva 2 200 GB eMLC 74'389
Samsung 840 Pro 256 GB 72'000
OCZ Vertex 3.20 240 GB
71'470
Intel SSD 520 240 GB 71'338
OCZ Vertex 460 120 GB 71'323
OCZ Vertex 3.20 120 GB
71'227
Corsair Neutron GTX 240 GB
71'180
Intel SSD 520 180 GB
No Review
70'944
OCZ Vertex 3 240 GB 70'031
Kingston HyperX SSD 240 GB 70'016
Kingston HyperX 3K SSD 120 GB 69'760
Corsair Force GT 120 GB 69'108
OCZ IBIS 240 GB 67'339
ADATA XPG mSATA SSD SX300 128 GB 66'107
SanDisk Extreme SSD 240 GB
No Review
65'817
Intel SSD 335 Series 240 GB
No Review
65'714
Kingston SSDNow V+ 200 90 GB 64'446
Plextor M5 Pro 256 GB
No Review
63'620
Kingston HyperX SSD 120 GB 63'553
ADATA S511 SSD 120 GB 61'302
OCZ Agility 3 240 GB 60'579
Extrememory XLR8 Express 120 GB 58'604
ADATA S511 60 GB 56'749
Corsair Force 3 120 GB 56'017
SanDisk Extreme SSD 120 GB 53'719
OCZ RevoDrive Hybrid 120GB SSD, 1TB HDD 53'618
OCZ Synapse 64 GB 52'126
OCZ RevoDrive X2 480 GB PCIe-SSD 39'744
Samsung PM830 SSD 256 GB 39'192
Samsung 840Evo 120 GB
No Review
38'077
Samsung PM830 SSD 128 GB
32'772
Toshiba THNSNF512GCSS 512 GB
No Review
23'799
Kingmax SMP35 Client 240 GB
23'640
OCZ Octane 1 TB 22'192
OCZ Octane 512 GB 20'492
Intel X25-M Gen2 34nm 160 GB 15'434
Intel X25-M 80 GB 6'297


Page 1 - Introduction Page 7 - Random read KByte/s
Page 2 - Impressions Page 8 - Random write IOPS
Page 3 - How do we test? Page 9 - Random read IOPS
Page 4 - Sequential write KByte/s Page 10 - QD1/4/8/16/32 Performance
Page 5 - Sequential read KByte/s Page 11 - Conclusion
Page 6 - Random write KByte/s  
[pagebreak]

IOPS, Random read

Random read
Bewertung
IOPS 4 KByte Block Size
OCZ RevoDrive 3 X2 480 GB PCIe-SSD 160'832
Samsung 840 Pro 256 GB 100'198
Samsung 850 Pro 256 GB 99'919
Samsung 840 Evo 250 GB mSATA
No Review
99'476
Plextor M5 Pro 256 GB
No Review
98'600
Samsung 840 Evo 1 TB
96'308
OCZ Vector 256 GB
95'614
Toshiba THNSNF512GCSS 512 GB
No Review
93'251
Samsung 845DC PRO 800 GB 92'101
OCZ RevoDrive 3 240 GB
No Review
91'642
OCZ Vertex 4 512 GB 92'288
Samsung 840Evo 120 GB
No Review
91'598
OCZ Vector 150 240 GB 89'692
OCZ IBIS 240 GB 89'630
Corsair Neutron GTX 240 GB
89'585
OCZ Vertex 4 256 GB 87'654
Samsung 850DC EVO 960 GB
87'544
Crucial M500 480 GB
No Review
86'622
OCZ Vertex 450 256 GB 84'561
Samsung PM830 SSD 256 GB 77'637
OCZ Vertex 460 120 GB 77'119
OCZ Agility 4 256 GB 63'925
Kingmax SMP35 Client 240 GB
57'856
OCZ Deneva 2 200 GB eMLC 55'090
Intel SSD 520 180 GB
No Review
53'477
Intel SSD 520 240 GB 51'835
Corsair Force GS 240 GB
51'373
Intel SSD 335 Series 240 GB
No Review
46'647
OCZ Vertex 3 240 GB 42'308
Kingston HyperX SSD 240 GB 41'917
OCZ Vertex 3.20 240 GB
41'813
Samsung PM830 SSD 128 GB
37'813
Extrememory XLR8 Express 120 GB 37'403
SanDisk Extreme SSD 240 GB
No Review
36'550
OCZ Agility 3 240 GB 35'295
OCZ Octane 1 TB 32'403
OCZ Octane 512 GB 31'442
Kingston HyperX 3K SSD 120 GB 25'822
ADATA XPG mSATA SSD SX300 128 GB 25'036
Corsair Force GT 120 GB 24'807
Kingston HyperX SSD 120 GB 24'473
ADATA S511 SSD 120 GB 24'338
SanDisk Extreme SSD 120 GB 22'278
Kingston SSDNow V+ 200 90 GB 21'443
OCZ RevoDrive Hybrid 120GB SSD, 1TB HDD 21'853
Corsair Force 3 120 GB 20'718
OCZ Vertex 3.20 120 GB
20'438
Intel X25-M Gen2 34nm 160 GB 14'606
ADATA S511 60 GB 12'963
OCZ Synapse 64 GB 11'980
OCZ RevoDrive X2 480 GB PCIe-SSD 10'833
Intel X25-M 80 GB 5'349


Page 1 - Introduction Page 7 - Random read KByte/s
Page 2 - Impressions Page 8 - Random write IOPS
Page 3 - How do we test? Page 9 - Random read IOPS
Page 4 - Sequential write KByte/s Page 10 - QD1/4/8/16/32 Performance
Page 5 - Sequential read KByte/s Page 11 - Conclusion
Page 6 - Random write KByte/s  
[pagebreak]

Conclusion

Throughput 1 Thread (QD1)

1T Throughput (KB/s)
  4k 8k 16k 32k 64k 128k 256k 512k
Seq write 529'042 534'003 525'630 518'297 516'021 523'721 524'361 506'923
Seq read 391'554 381'617 410'363 426'649 411'043 404'804 423'567 431'048
Rand write 104'857 270'048 344'704 415'256 475'950 472'712 472'254 492'146
Rand read 27'435 49'898 99'638 163'130 171'810 220'705 288'657 322'092




Throughput 4 Threads (QD4)

4T Throughput (KB/s)
  4k 8k 16k 32k 64k 128k 256k 512k
Seq write 546'771 546'207 548'901 549'762 551'906 549'849 553'648 553'570
Seq read 543'370 543'037 546'351 548'532 547'245 549'092 549'223 548'307
Rand write 428'800 519'784 553'814 537'021 548'912 553'450 552'605 553'508
Rand read 141'419 224'989 318'896 413'036 491'886 526'204 530'563 547'246




Throughput 8 Threads (QD8)

8T Throughput (KB/s)
  4k 8k 16k 32k 64k 128k 256k 512k
Seq write 547'213 559'360 551'047 550'821 559'607 563'196 557'620 554'409
Seq read 523'881 541'757 543'724 546'671 548'751 548'751 548'655 547'971
Rand write 398'170 530'299 551'586 552'995 554'794 557'422 555'715 556'300
Rand read 255'148 479'565 532'280 515'935 543'987 550'887 550'309 552'612




Throughput 16 Threads (QD16)

16T Throughput (KB/s)
  4k 8k 16k 32k 64k 128k 256k 512k
Seq write 514'776 534'241 546'660 540'343 540'775 542'334 541'304 536'030
Seq read 523'654 533'552 537'736 541'380 545'952 549'332 548'562 548'774
Rand write 373'631 463'580 505'979 529'182 534'148 538'132 539'077 538'069
Rand read 385'676 467'470 507'931 531'083 527'733 534'820 534'820 542'962




Throughput 32 Threads (QD32)

32T Throughput (KB/s)
  4k 8k 16k 32k 64k 128k 256k 512k
Seq write 524'365 534'439 530'889 530'334 531'584 533'895 531'027 529'866
Seq read 504'682 521'984 531'082 538'388 544'807 549'322 549'281 548'836
Rand write 360'357 453'295 496'524 516'139 530'389 536'658 535'681 554'059
Rand read 390'689 469'230 504'144 531'870 542'936 548'751 548'751 548'503




Page 1 - Introduction Page 7 - Random read KByte/s
Page 2 - Impressions Page 8 - Random write IOPS
Page 3 - How do we test? Page 9 - Random read IOPS
Page 4 - Sequential write KByte/s Page 10 - QD1/4/8/16/32 Performance
Page 5 - Sequential read KByte/s Page 11 - Conclusion
Page 6 - Random write KByte/s  
[pagebreak]

Conclusion

Announcement: Despite the circumstance that the rating of a product is based on as many objective facts as possible there are factors which can have an influence on a rating after publication. Every autor may perceive data differently over time whereas one possible reason for example is a deeper background knowledge or understanding of certain processes. Certain unforseen market conditions as well as changes have the potential to render a descision made at a certain point in time obsolete.

With the 850 PRO Samsung has launched the successor of the 840 PRO, which was amongst the very fastest drives, when it was launched about one year ago. Compared to the 840 PRO the 850 PRO basically features the same controller, that clocks 100 MHz quicker. What's way more important than the updated controller is the fact, that this drives uses 3D V-NAND, which offers higher reliability as well as higher performance than standard MLC NAND flash memory.

In terms of raw performance our test drive was able to score 531 MB/s sequential write and 548 MB/s sequential read throughput. When it comes to 4K IOPS we measured as near as makes no difference 100'000 IOPS regarding random read and 91'000 regarding random write. In the case of sequential read as well as sequential write we see that the SATA-III interface is being maxed out and therefore performance is where it should be. Apart from these values we also noticed consistent performance regarding our different queue depth tests. 

Last but not least there is the pricing. The Samsung 850 PRO 128GB costs 98 Euro, the 850 PRO 256 GB accounts for 150 Euro, the 512 Gigabyte model is 304 Euro and the 1 Terabyte model sells for 530 Euro. Price per gigabyte is therefore somewhere inbetween 0.77 and 0.52 Euro, which is basically at the top end compared to the competition.

Should you be looking for one of the fastest consumer SSDs money can buy, then the 850 PRO should definitely be considered.




Page 1 - Introduction Page 7 - Random read KByte/s
Page 2 - Impressions Page 8 - Random write IOPS
Page 3 - How do we test? Page 9 - Random read IOPS
Page 4 - Sequential write KByte/s Page 10 - QD1/4/8/16/32 Performance
Page 5 - Sequential read KByte/s Page 11 - Conclusion
Page 6 - Random write KByte/s  


Authors: m.buechel@ocaholic.ch