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SamsungMZ-7KE256BW
Microsoft
▲ 5441,223 ▼

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

VS
▲ 500 ▼
  

Release date ≈ Q3 2018.

Effective Speed 
+0%
Real World Speed
Performance profile from 142,334 user samples
Benchmark your SSD here
141,929 User Benchmarks
Best Bench: 124% 238GB free
Worst Bench: 71% 71GB free (System drive)
Poor: 71% Great: 124%
SPEED RANK: 256th / 1080
405 User Benchmarks
Best Bench: 126% 478GB free
Worst Bench: 65% 685GB free
Poor: 65% Great: 126%
SPEED RANK: 257th / 1080
Effective Speed
Effective SSD Speed 		102 % +0% 102 %
Average Score 
+3%
Read
Avg. Sequential Read Speed 		469 MB/s +1% 464 MB/s
Write
Avg. Sequential Write Speed 		396 MB/s 417 MB/s Slightly faster write speed.
+5%
4K Read
Avg. 4K Random Read Speed 		33.9 MB/s 35.3 MB/s +4%
4K Write
Avg. 4K Random Write Speed 		89.6 MB/s Slightly faster random write.
+8% 		83.3 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		334 MB/s 374 MB/s Faster mixed IO speed.
+12%
4K Mixed
Avg. 4K Random Mixed IO Speed 		44.1 MB/s 46 MB/s +4%
SusWrite
Avg. Sustained Write Speed 		346 MB/s 360 MB/s +4%
Peak Score 
+3%
Read
Peak Sequential Read Speed 		515 MB/s +0% 514 MB/s
Write
Peak Sequential Write Speed 		488 MB/s +0% 487 MB/s
4K Read
Peak 4K Random Read Speed 		43.6 MB/s 44.7 MB/s +3%
4K Write
Peak 4K Random Write Speed 		125 MB/s Slightly faster peak random write.
+7% 		117 MB/s
Mixed
Peak Sequential Mixed IO Speed 		383 MB/s 458 MB/s Faster peak mixed IO speed.
+20%
4K Mixed
Peak 4K Random Mixed IO Speed 		56.7 MB/s 61.6 MB/s Slightly faster peak random mixed IO.
+9%
SusWrite
Peak Sequential Sustained Write 60s Average 		484 MB/s +0% 483 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 77,520,452 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.08 % Insanely higher market share.
+∞% 		0 %
User Rating
UBM User Rating 		54 % Slightly more popular.
+8% 		50 %
Nice To Haves 
+1%
Age
Newest 		124 Months 75+ Months Much more recent.
+40%
DQ Read
Peak 4K-64Thread Read Speed 		388 MB/s 389 MB/s +0%
DQ Write
Peak 4K-64Thread Write Speed 		361 MB/s 362 MB/s +0%
AS-SSD Total
AS-SSD Total Score 		1,280 Pts +0% 1,276 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		356 MB/s 368 MB/s +3%
ADQ Read
Avg. 4K-64Thread Read Speed 		344 MB/s Faster deep queue read.
+16% 		297 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		282 MB/s Slightly faster deep queue write.
+8% 		261 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		295 MB/s Faster deep queue mixed IO.
+26% 		234 MB/s
Specifications 
Capacity
Capacity 		256GB 995GB
Conclusion 
Average Bench 102%
Average Bench 102%

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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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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