SamsungMZ-7KE256BW
SanDiskSDSSDXPS-240G

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

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC.

Real World Speed
Performance profile from 46,075 user samples
41,481 User Benchmarks
Best Bench: 126% 152GB free (System drive)
Worst Bench: 72% 122GB free (System drive)
Poor: 72% Great: 126%
SPEED RANK: 135th / 955
4,594 User Benchmarks
Best Bench: 109% 202GB free
Worst Bench: 65% 46GB free (System drive)
Poor: 65% Great: 109%
SPEED RANK: 190th / 955
Effective Speed
Effective SSD Speed
105 % Faster effective speed.
+18%
88.8 %
Read
Avg. Sequential Read Speed
475 MB/s 486 MB/s +2%
Write
Avg. Sequential Write Speed
420 MB/s 427 MB/s +2%
4K Read
Avg. 4K Random Read Speed
34.5 MB/s Faster random read.
+21%
28.5 MB/s
4K Write
Avg. 4K Random Write Speed
96.3 MB/s Faster random write.
+25%
77 MB/s
Mixed
Avg. Sequential Mixed IO Speed
341 MB/s 401 MB/s Faster mixed IO speed.
+18%
4K Mixed
Avg. 4K Random Mixed IO Speed
45.2 MB/s Hugely faster random mixed IO.
+84%
24.5 MB/s
SusWrite
Avg. Sustained Write Speed
360 MB/s 366 MB/s +2%
Read
Peak Sequential Read Speed
518 MB/s +0% 517 MB/s
Write
Peak Sequential Write Speed
490 MB/s 495 MB/s +1%
4K Read
Peak 4K Random Read Speed
44 MB/s Faster peak random read.
+23%
35.9 MB/s
4K Write
Peak 4K Random Write Speed
131 MB/s Faster peak random write.
+16%
113 MB/s
Mixed
Peak Sequential Mixed IO Speed
382 MB/s 487 MB/s Faster peak mixed IO speed.
+27%
4K Mixed
Peak 4K Random Mixed IO Speed
57.9 MB/s Much faster peak random mixed IO.
+47%
39.3 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
478 MB/s +1% 475 MB/s
Market Share
Based on 7,606,926 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.65 % Hugely higher market share.
+983%
0.06 %
Value
Value For Money
81.6 % +2% 79.8 %
User Rating
UBM User Rating
97 % Much more popular.
+52%
64 %
Price
Price (score)
$136 $105 Cheaper.
+23%
Age
Newest
48 Months +2% 49 Months
DQ Read
Peak 4K-64Thread Read Speed
388 MB/s +4% 374 MB/s
DQ Write
Peak 4K-64Thread Write Speed
353 MB/s Slightly faster peak deep queue write.
+6%
334 MB/s
AS-SSD Total
AS-SSD Total Score
1,279 Pts Slightly stronger server IO.
+6%
1,206 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
357 MB/s Hugely faster peak deep queue mixed IO.
+120%
162 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
342 MB/s Much faster deep queue read.
+63%
210 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
303 MB/s Much faster deep queue write.
+40%
217 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
301 MB/s Hugely faster deep queue mixed IO.
+378%
63 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]

MORE DETAILS

The 240GB Sandisk Extreme Pro uses the same controller and NAND as its 13 months younger predecessor, the Extreme II. Comparing the Extreme II and Extreme Pro shows that average performance has increased by 10% but peak performance remains broadly unchanged. The Pro features an improved nCache which uses an SLC buffer to cache writes prior to writing them to the slower MLC NAND. In order to benefit from this improved caching, huge amounts of data need to be written for extended periods, an unlikely consumer scenario. Comparing core performance between the Samsung 840 Evo and Extreme Pro shows that the Extreme Pro averages around 12% faster than the Evo. The Extreme Pro also has a 10 year warranty but I wonder if SATA 3 will even be around at that time. Although the Extreme Pro has a superb performance profile it's not a game changer. [Jun '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) July 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 - 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 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.
  • - 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.
  • - 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.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $320Nvidia GTX 1070 $413Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $289Samsung 850 Evo 500GB $120
Intel Core i7-7700K $300AMD RX 480 $280Samsung 850 Pro 256GB $136
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $160SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $945SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $55HyperX Fury DDR4 2133 C14 2x8GB $219SanDisk Ultra Fit 32GB $12
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