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Thinklife
SamsungMZ-7KE256BW
▲ 500 ▼
  

Release date ≈ Q1 2019.

VS
▲ 5441,222 ▼

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

Effective Speed 
+25%
Real World Speed
Performance profile from 141,937 user samples
Benchmark your SSD here
8 User Benchmarks
Best Bench: 109% 871GB free (System drive)
Worst Bench: 36% 217GB free
Poor: 36% Great: 109%
SPEED RANK: 462nd / 1074
141,929 User Benchmarks
Best Bench: 124% 238GB free
Worst Bench: 71% 71GB free (System drive)
Poor: 71% Great: 124%
SPEED RANK: 250th / 1074
Effective Speed
Effective SSD Speed 		81.7 % 102 % Faster effective speed.
+25%
Average Score 
+21%
Read
Avg. Sequential Read Speed 		468 MB/s 469 MB/s +0%
Write
Avg. Sequential Write Speed 		380 MB/s 396 MB/s +4%
4K Read
Avg. 4K Random Read Speed 		25.7 MB/s 33.9 MB/s Much faster random read.
+32%
4K Write
Avg. 4K Random Write Speed 		73.6 MB/s 89.6 MB/s Faster random write.
+22%
Mixed
Avg. Sequential Mixed IO Speed 		325 MB/s 334 MB/s +3%
4K Mixed
Avg. 4K Random Mixed IO Speed 		25.3 MB/s 44.1 MB/s Much faster random mixed IO.
+74%
SusWrite
Avg. Sustained Write Speed 		319 MB/s 346 MB/s Slightly faster sustained write speed.
+8%
Peak Score 
+10%
Read
Peak Sequential Read Speed 		505 MB/s 515 MB/s +2%
Write
Peak Sequential Write Speed 		463 MB/s 488 MB/s Slightly faster peak write speed.
+5%
4K Read
Peak 4K Random Read Speed 		34.6 MB/s 43.6 MB/s Faster peak random read.
+26%
4K Write
Peak 4K Random Write Speed 		117 MB/s 125 MB/s Slightly faster peak random write.
+7%
Mixed
Peak Sequential Mixed IO Speed 		409 MB/s Slightly faster peak mixed IO speed.
+7% 		383 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		47.8 MB/s 56.7 MB/s Faster peak random mixed IO.
+19%
SusWrite
Peak Sequential Sustained Write 60s Average 		404 MB/s 484 MB/s Faster peak sustained write speed.
+20%
Value & Sentiment 
+∞%
Market Share
Based on 76,149,676 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0 % 0.09 % Insanely higher market share.
+∞%
User Rating
UBM User Rating 		50 % 54 % Slightly more popular.
+8%
Nice To Haves 
+85%
Age
Newest 		62+ Months Much more recent.
+48% 		119 Months
DQ Read
Peak 4K-64Thread Read Speed 		374 MB/s 388 MB/s +4%
DQ Write
Peak 4K-64Thread Write Speed 		353 MB/s 361 MB/s +2%
AS-SSD Total
AS-SSD Total Score 		1,220 Pts 1,280 Pts +5%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		122 MB/s 356 MB/s Hugely faster peak deep queue mixed IO.
+192%
ADQ Read
Avg. 4K-64Thread Read Speed 		201 MB/s 344 MB/s Much faster deep queue read.
+71%
ADQ Write
Avg. 4K-64Thread Write Speed 		261 MB/s 282 MB/s Slightly faster deep queue write.
+8%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		54.1 MB/s 295 MB/s Hugely faster deep queue mixed IO.
+445%
Specifications 
Capacity
Capacity 		1TB 256GB
Conclusion 
Average Bench 81.7%
Average Bench 102%
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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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Welcome to our 2.5" and M.2 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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 Frequently Asked Questions

Storage Devices FAQ
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Solid State Drives
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The Best
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Intel Core i5-12400F $110Nvidia RTX 4060 $290WD Black SN850X M.2 2TB $145
Intel Core i5-12600K $174Nvidia RTX 4060-Ti $385WD Black SN850X M.2 1TB $89
Intel Core i5-13600K $260Nvidia RTX 4070 $549WD Black SN850X M.2 4TB $293
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