SamsungMZ-7KE256BW
SanDiskSDSSDHII-240G-G25

Controller: Samsung Triple Core MEX. Memory: Samsung 40nm MLC V-NAND

Controller: Marvell 88SS9187. Memory: SanDisk 19nm TLC.

Real World Speed
Performance profile from 57,526 user samples
41,764 User Benchmarks
Best Bench: 121% 158GB free
Worst Bench: 68% 86GB free
Poor: 68% Great: 121%
SPEED RANK: 111th / 927
15,762 User Benchmarks
Best Bench: 83% 58GB free
Worst Bench: 46% 46GB free
Poor: 46% Great: 83%
SPEED RANK: 492nd / 927
Effective Speed
Effective SSD Speed
97.6 % Much faster effective speed.
+50%
65.2 %
Read
Avg. Sequential Read Speed
501 MB/s Slightly faster read speed.
+10%
455 MB/s
Write
Avg. Sequential Write Speed
439 MB/s Much faster write speed.
+76%
250 MB/s
4K Read
Avg. 4K Random Read Speed
32.3 MB/s Faster random read.
+20%
27 MB/s
4K Write
Avg. 4K Random Write Speed
86.6 MB/s Much faster random write.
+75%
49.6 MB/s
Mixed
Avg. Sequential Mixed IO Speed
457 MB/s Hugely faster mixed IO speed.
+88%
243 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
33.6 MB/s Hugely faster random mixed IO.
+130%
14.6 MB/s
Read
Peak Sequential Read Speed
528 MB/s Slightly faster peak read speed.
+6%
499 MB/s
Write
Peak Sequential Write Speed
503 MB/s Much faster peak write speed.
+47%
343 MB/s
4K Read
Peak 4K Random Read Speed
43.2 MB/s Faster peak random read.
+18%
36.7 MB/s
4K Write
Peak 4K Random Write Speed
121 MB/s Much faster peak random write.
+58%
76.7 MB/s
Mixed
Peak Sequential Mixed IO Speed
513 MB/s Much faster peak mixed IO speed.
+56%
328 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
50.5 MB/s Hugely faster peak random mixed IO.
+145%
20.6 MB/s
Market Share
Based on 6,826,064 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.72 % Much higher market share.
+67%
0.43 %
Value
Value For Money
66.1 % 79.4 % Better value.
+20%
User Rating
UBM User Rating
99 % Much more popular.
+52%
65 %
Price
Price (score)
$163 $70 Much cheaper.
+57%
Age
Newest
46 Months 44 Months +4%
DQ Read
Peak 4K-64Thread Read Speed
378 MB/s Slightly faster peak deep queue read.
+10%
345 MB/s
DQ Write
Peak 4K-64Thread Write Speed
338 MB/s Much faster peak deep queue write.
+64%
206 MB/s
AS-SSD Total
AS-SSD Total Score
1,241 Pts Stronger server IO.
+27%
975 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
162 MB/s Hugely faster peak deep queue mixed IO.
+219%
50.8 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
188 MB/s Slightly faster deep queue read.
+9%
173 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
211 MB/s Much faster deep queue write.
+62%
130 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
83.3 MB/s Hugely faster deep queue mixed IO.
+174%
30.4 MB/s
Capacity
Capacity
256GB 240GB
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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The Sandisk Ultra II sits above Sandisk's Ultra Plus and below their Extreme Pro. The Ultra Plus would probably have been phased out completely were it not for its continued success within budget space. The Ultra II is the first Sandisk drive to utilize cheaper (and slower) TLC NAND. Similarly to the Extreme Pro, the Ultra II utilizes an nCache which operates a portion of the NAND in simulated SLC mode. This strategy also matches the one employed by Samsung's now 14 months old Evo. Comparing the Ultra II and Evo shows broad performance equivalence which given the Ultra II's 15% price discount makes it the better choice today. That said it's probably worth waiting for the release of the 850 Evo which will pack another 14 months of Samsung's market leading R&D and will probably steal the show. [Sep '14 SSDrivePro]

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Solid State Drive Rankings (Price vs Performance) May 2018 SSD Rankings.

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 - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.
How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware 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 upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $320Nvidia GTX 1070 $447Samsung 850 Evo 250GB $95
AMD Ryzen 5 1600 $172Nvidia GTX 1060-6GB $280Samsung 850 Evo 500GB $136
Intel Core i7-7700K $285AMD RX 480 $300Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $41
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $961SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Extreme 16GB $20
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