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SamsungMZ-7KE256BW
▲ 500 ▼
  

Release date ≈ Q3 2022.

VS
▲ 5441,223 ▼

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

Effective Speed 
+56%
Real World Speed
Performance profile from 142,279 user samples
Benchmark your SSD here
350 User Benchmarks
Best Bench: 85% 221GB free
Worst Bench: 45% 144GB free (System drive)
Poor: 45% Great: 85%
SPEED RANK: 745th / 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 		65.4 % 102 % Much faster effective speed.
+56%
Average Score 
+51%
Read
Avg. Sequential Read Speed 		339 MB/s 469 MB/s Much faster read speed.
+38%
Write
Avg. Sequential Write Speed 		331 MB/s 396 MB/s Faster write speed.
+20%
4K Read
Avg. 4K Random Read Speed 		18.1 MB/s 33.9 MB/s Hugely faster random read.
+87%
4K Write
Avg. 4K Random Write Speed 		46.8 MB/s 89.6 MB/s Hugely faster random write.
+91%
Mixed
Avg. Sequential Mixed IO Speed 		298 MB/s 334 MB/s Faster mixed IO speed.
+12%
4K Mixed
Avg. 4K Random Mixed IO Speed 		22.3 MB/s 44.1 MB/s Hugely faster random mixed IO.
+98%
SusWrite
Avg. Sustained Write Speed 		305 MB/s 346 MB/s Faster sustained write speed.
+13%
Peak Score 
+38%
Read
Peak Sequential Read Speed 		421 MB/s 515 MB/s Faster peak read speed.
+22%
Write
Peak Sequential Write Speed 		410 MB/s 488 MB/s Faster peak write speed.
+19%
4K Read
Peak 4K Random Read Speed 		26.5 MB/s 43.6 MB/s Much faster peak random read.
+65%
4K Write
Peak 4K Random Write Speed 		76.8 MB/s 125 MB/s Much faster peak random write.
+63%
Mixed
Peak Sequential Mixed IO Speed 		358 MB/s 383 MB/s Slightly faster peak mixed IO speed.
+7%
4K Mixed
Peak 4K Random Mixed IO Speed 		34.1 MB/s 56.7 MB/s Much faster peak random mixed IO.
+66%
SusWrite
Peak Sequential Sustained Write 60s Average 		396 MB/s 484 MB/s Faster peak sustained write speed.
+22%
Value & Sentiment 
+304%
Market Share
Based on 77,379,576 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.07 % Hugely higher market share.
+600%
User Rating
UBM User Rating 		50 % 54 % Slightly more popular.
+8%
Nice To Haves 
+56%
Age
Newest 		26+ Months Much more recent.
+79% 		124 Months
DQ Read
Peak 4K-64Thread Read Speed 		167 MB/s 388 MB/s Hugely faster peak deep queue read.
+132%
DQ Write
Peak 4K-64Thread Write Speed 		296 MB/s 361 MB/s Faster peak deep queue write.
+22%
AS-SSD Total
AS-SSD Total Score 		780 Pts 1,280 Pts Much stronger server IO.
+64%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		217 MB/s 356 MB/s Much faster peak deep queue mixed IO.
+64%
ADQ Read
Avg. 4K-64Thread Read Speed 		134 MB/s 344 MB/s Hugely faster deep queue read.
+157%
ADQ Write
Avg. 4K-64Thread Write Speed 		242 MB/s 282 MB/s Faster deep queue write.
+17%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		175 MB/s 295 MB/s Much faster deep queue mixed IO.
+69%
Specifications 
Capacity
Capacity 		256GB 256GB
Conclusion 
Average Bench 65.4%
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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 Frequently Asked Questions

Storage Devices FAQ
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Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
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The Best
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Intel Core i5-12600K $165Nvidia RTX 4060 $295WD Black SN850X M.2 2TB $135
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