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SamsungMZ-7KE256BW
KingstonSNV425S2128GB
▲ 5441,222 ▼

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

VS
▲ 504 ▼
  

Release date ≤ Q1 2014.

Effective Speed 
+404%
Real World Speed
Performance profile from 143,027 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: 248th / 1072
1,098 User Benchmarks
Best Bench: 30% 18GB free
Worst Bench: 7% 0GB free (System drive)
Poor: 7% Great: 30%
SPEED RANK: 1059th / 1072
Effective Speed
Effective SSD Speed 		102 % Hugely faster effective speed.
+404% 		20.2 %
Average Score 
+396%
Read
Avg. Sequential Read Speed 		469 MB/s Hugely faster read speed.
+188% 		163 MB/s
Write
Avg. Sequential Write Speed 		396 MB/s Hugely faster write speed.
+267% 		108 MB/s
4K Read
Avg. 4K Random Read Speed 		33.9 MB/s Hugely faster random read.
+326% 		7.96 MB/s
4K Write
Avg. 4K Random Write Speed 		89.6 MB/s Hugely faster random write.
+700% 		11.2 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		334 MB/s Hugely faster mixed IO speed.
+362% 		72.3 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		44.1 MB/s Hugely faster random mixed IO.
+646% 		5.91 MB/s
SusWrite
Avg. Sustained Write Speed 		346 MB/s Hugely faster sustained write speed.
+281% 		90.8 MB/s
Peak Score 
+301%
Read
Peak Sequential Read Speed 		515 MB/s Hugely faster peak read speed.
+131% 		223 MB/s
Write
Peak Sequential Write Speed 		488 MB/s Hugely faster peak write speed.
+187% 		170 MB/s
4K Read
Peak 4K Random Read Speed 		43.6 MB/s Hugely faster peak random read.
+279% 		11.5 MB/s
4K Write
Peak 4K Random Write Speed 		125 MB/s Hugely faster peak random write.
+541% 		19.5 MB/s
Mixed
Peak Sequential Mixed IO Speed 		383 MB/s Hugely faster peak mixed IO speed.
+268% 		104 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		56.7 MB/s Hugely faster peak random mixed IO.
+516% 		9.2 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		484 MB/s Hugely faster peak sustained write speed.
+186% 		169 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 75,637,652 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 
+2,186%
Age
Newest 		117 Months +4% 122+ Months
DQ Read
Peak 4K-64Thread Read Speed 		388 MB/s Insanely faster peak deep queue read.
+2,931% 		12.8 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		361 MB/s Insanely faster peak deep queue write.
+1,541% 		22 MB/s
AS-SSD Total
AS-SSD Total Score 		1,280 Pts Hugely stronger server IO.
+873% 		132 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		356 MB/s Insanely faster peak deep queue mixed IO.
+3,570% 		9.7 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		344 MB/s Insanely faster deep queue read.
+3,115% 		10.7 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		282 MB/s Insanely faster deep queue write.
+1,662% 		16 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		295 MB/s Insanely faster deep queue mixed IO.
+3,792% 		7.58 MB/s
Specifications 
Capacity
Capacity 		256GB 128GB
Conclusion 
Average Bench 102%
Average Bench 20.2%
ADVERTISEMENT

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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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute

Welcome to our PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best value for money upgrades.

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How it works

  • - Download and run UserBenchmark
  • - CPU tests include: integer, floating and string
  • - GPU tests include: six 3D game simulations
  • - Drive tests include: read, write, sustained write and mixed IO
  • - RAM tests include: single/multi core bandwidth and latency
  • - SkillBench (space shooter) tests user input accuracy
  • - Reports are generated and presented on userbenchmark.com
  • - Identify the strongest components in your PC
  • - See speed test results from other users
  • - Compare your components to the current market leaders
  • - Explore your best upgrade options with a virtual PC build
  • - Compare your in-game FPS to other users with your hardware

 Frequently Asked Questions

Storage Devices FAQ
What is sustained sequential write speed?
What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
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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?
What is the effective SSD speed index?
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 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $273Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $186Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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