Samsung
SamsungMZ-7KE256BW
  

Release date ≈ Q4 2018.

Controller: Samsung Triple Core MEX. Memory: Samsung 40nm MLC V-NAND. Release date: Q3 2014.

Real World Speed
Performance profile from 143,942 user samples
2,013 User Benchmarks
Best Bench: 284% 477GB free
Worst Bench: 178% 432GB free (System drive)
Poor: 178% Great: 284%
SPEED RANK: 72nd / 1080
141,929 User Benchmarks
Best Bench: 124% 238GB free
Worst Bench: 71% 71GB free (System drive)
Poor: 71% Great: 124%
SPEED RANK: 256th / 1080
Effective Speed
Effective SSD Speed
240 % Hugely faster effective speed.
+136%
102 %
Read
Avg. Sequential Read Speed
2024 MB/s Hugely faster read speed.
+332%
469 MB/s
Write
Avg. Sequential Write Speed
1683 MB/s Hugely faster write speed.
+325%
396 MB/s
4K Read
Avg. 4K Random Read Speed
54.2 MB/s Much faster random read.
+60%
33.9 MB/s
4K Write
Avg. 4K Random Write Speed
132 MB/s Much faster random write.
+47%
89.6 MB/s
Mixed
Avg. Sequential Mixed IO Speed
1269 MB/s Hugely faster mixed IO speed.
+280%
334 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
71 MB/s Much faster random mixed IO.
+61%
44.1 MB/s
SusWrite
Avg. Sustained Write Speed
687 MB/s Hugely faster sustained write speed.
+99%
346 MB/s
Read
Peak Sequential Read Speed
2345 MB/s Hugely faster peak read speed.
+355%
515 MB/s
Write
Peak Sequential Write Speed
1949 MB/s Hugely faster peak write speed.
+299%
488 MB/s
4K Read
Peak 4K Random Read Speed
66.9 MB/s Much faster peak random read.
+53%
43.6 MB/s
4K Write
Peak 4K Random Write Speed
182 MB/s Much faster peak random write.
+46%
125 MB/s
Mixed
Peak Sequential Mixed IO Speed
1558 MB/s Hugely faster peak mixed IO speed.
+307%
383 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
89.8 MB/s Much faster peak random mixed IO.
+58%
56.7 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
854 MB/s Much faster peak sustained write speed.
+76%
484 MB/s
Market Share
Based on 76,431,962 SSDs tested
Market Share
Market Share (trailing 30 days)
0.03 % 0.03 %
User Rating
UBM User Rating
50 % 54 % Slightly more popular.
+8%
Age
Newest
69+ Months Much more recent.
+42%
120 Months
DQ Read
Peak 4K-64Thread Read Speed
1539 MB/s Hugely faster peak deep queue read.
+297%
388 MB/s
DQ Write
Peak 4K-64Thread Write Speed
1252 MB/s Hugely faster peak deep queue write.
+247%
361 MB/s
AS-SSD Total
AS-SSD Total Score
4,403 Pts Hugely stronger server IO.
+244%
1,280 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
1342 MB/s Hugely faster peak deep queue mixed IO.
+277%
356 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
1076 MB/s Hugely faster deep queue read.
+213%
344 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
810 MB/s Hugely faster deep queue write.
+187%
282 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
914 MB/s Hugely faster deep queue mixed IO.
+210%
295 MB/s
Capacity
Capacity
512GB 256GB
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The 256GB Samsung 850 Pro is the fastest consumer SSD we have seen to date. Thanks to Samsung's new 3D V-NAND the 850 Pro has lower power consumption and better performance, albeit marginally, than both the 840 Evo and 840 Pro. Looking at the benchmark figures for the 840 and 850 Pros shows that the effective performance improvement is 10% whereas the 850 Pro beats the 840 Evo by 16%. These drives effectively saturate SATA 3.0 making it difficult to distinguish between them in day-to-day use. At current prices the 850 Pro is prohibitively expensive, prices need to drop by 15% before it approaches the 840 Pro from a value perspective. Samsung may release a value orientated 850 Evo soon, but for now "most" users are better off with the 840 Pro. [Oct '14 SSDrivePro]

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Solid State Drive Rankings (Price vs Performance) July 2024 SSD Rankings

Welcome to our SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]

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  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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