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SamsungMZ-7KE256BW
Avago
▲ 5441,222 ▼

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

VS
▲ 500 ▼
  

Release date ≈ Q3 2018.

Effective Speed 
+13%
Real World Speed
Performance profile from 141,934 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
5 User Benchmarks
Best Bench: 118% 608GB free
Worst Bench: 112% 608GB free
Poor: 112% Great: 118%
SPEED RANK: 207th / 1080
Effective Speed
Effective SSD Speed 		102 % 115 % Faster effective speed.
+13%
Average Score 
+14%
Read
Avg. Sequential Read Speed 		469 MB/s +1% 464 MB/s
Write
Avg. Sequential Write Speed 		396 MB/s 420 MB/s Slightly faster write speed.
+6%
4K Read
Avg. 4K Random Read Speed 		33.9 MB/s 37.6 MB/s Faster random read.
+11%
4K Write
Avg. 4K Random Write Speed 		89.6 MB/s 104 MB/s Faster random write.
+16%
Mixed
Avg. Sequential Mixed IO Speed 		334 MB/s 402 MB/s Faster mixed IO speed.
+20%
4K Mixed
Avg. 4K Random Mixed IO Speed 		44.1 MB/s 52.1 MB/s Faster random mixed IO.
+18%
SusWrite
Avg. Sustained Write Speed 		346 MB/s 451 MB/s Much faster sustained write speed.
+30%
Peak Score 
+5%
Read
Peak Sequential Read Speed 		515 MB/s Slightly faster peak read speed.
+6% 		486 MB/s
Write
Peak Sequential Write Speed 		488 MB/s Slightly faster peak write speed.
+10% 		445 MB/s
4K Read
Peak 4K Random Read Speed 		43.6 MB/s Faster peak random read.
+11% 		39.4 MB/s
4K Write
Peak 4K Random Write Speed 		125 MB/s Slightly faster peak random write.
+9% 		115 MB/s
Mixed
Peak Sequential Mixed IO Speed 		383 MB/s 420 MB/s Slightly faster peak mixed IO speed.
+10%
4K Mixed
Peak 4K Random Mixed IO Speed 		56.7 MB/s +3% 55.1 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		484 MB/s +5% 462 MB/s
Value & Sentiment 
+8%
Market Share
Based on 76,154,691 SSDs tested
See market share leaders
User Rating
UBM User Rating 		54 % Slightly more popular.
+8% 		50 %
Nice To Haves 
+7%
Age
Newest 		119 Months 71+ Months Much more recent.
+40%
DQ Read
Peak 4K-64Thread Read Speed 		388 MB/s Faster peak deep queue read.
+19% 		326 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		361 MB/s Faster peak deep queue write.
+29% 		279 MB/s
AS-SSD Total
AS-SSD Total Score 		1,280 Pts Stronger server IO.
+19% 		1,077 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		356 MB/s Faster peak deep queue mixed IO.
+22% 		291 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		344 MB/s Slightly faster deep queue read.
+6% 		325 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		282 MB/s +2% 277 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		295 MB/s +2% 290 MB/s
Specifications 
Capacity
Capacity 		256GB 2TB
Conclusion 
Average Bench 102%
Average Bench 115%
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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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