SamsungMZ-7KE256BW
SanDiskSDSSDXPS-240G

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

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC. Release date: Q2 2014.

Real World Speed
Performance profile from 76,974 user samples
70,379 User Benchmarks
Best Bench: 128% 124GB free
Worst Bench: 71% 238GB free
Poor: 71% Great: 128%
SPEED RANK: 178th / 1003
6,595 User Benchmarks
Best Bench: 112% 94GB free
Worst Bench: 65% 198GB free (System drive)
Poor: 65% Great: 112%
SPEED RANK: 241st / 1003
Effective Speed
Effective SSD Speed
106 % Slightly faster effective speed.
+15%
92.1 %
Read
Avg. Sequential Read Speed
477 MB/s +5% 455 MB/s
Write
Avg. Sequential Write Speed
422 MB/s +4% 407 MB/s
4K Read
Avg. 4K Random Read Speed
34.7 MB/s Faster random read.
+21%
28.7 MB/s
4K Write
Avg. 4K Random Write Speed
95.5 MB/s Faster random write.
+25%
76.5 MB/s
Mixed
Avg. Sequential Mixed IO Speed
346 MB/s Much faster mixed IO speed.
+34%
259 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
45.5 MB/s Much faster random mixed IO.
+35%
33.7 MB/s
SusWrite
Avg. Sustained Write Speed
371 MB/s +4% 357 MB/s
Read
Peak Sequential Read Speed
516 MB/s +2% 507 MB/s
Write
Peak Sequential Write Speed
491 MB/s +3% 476 MB/s
4K Read
Peak 4K Random Read Speed
44.2 MB/s Faster peak random read.
+23%
35.8 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
388 MB/s Faster peak mixed IO speed.
+25%
310 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
58.1 MB/s Much faster peak random mixed IO.
+36%
42.7 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
489 MB/s +3% 473 MB/s
Market Share
Based on 15,833,945 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.4 % Insanely higher market share.
+1,233%
0.03 %
Value
Value For Money
106 % +3% 102 %
User Rating
UBM User Rating
97 % Much more popular.
+52%
64 %
Price
Price (score)
$97 $79 Cheaper.
+19%
Age
Newest
60 Months +2% 61 Months
DQ Read
Peak 4K-64Thread Read Speed
388 MB/s +3% 377 MB/s
DQ Write
Peak 4K-64Thread Write Speed
360 MB/s Slightly faster peak deep queue write.
+6%
340 MB/s
AS-SSD Total
AS-SSD Total Score
1,287 Pts Slightly stronger server IO.
+6%
1,212 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
357 MB/s Hugely faster peak deep queue mixed IO.
+116%
165 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
339 MB/s Slightly faster deep queue read.
+7%
316 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
302 MB/s Slightly faster deep queue write.
+9%
277 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
300 MB/s Hugely faster deep queue mixed IO.
+105%
146 MB/s
Capacity
Capacity
256GB 240GB
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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]

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 2019 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 $350Nvidia GTX 1070 $400Samsung 850 Evo 250GB $104
AMD Ryzen 5 2600 $127Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $103
AMD Ryzen 7 2700X $248Nvidia GTX 1080-Ti $709Samsung 850 Pro 256GB $97
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $68SanDisk Extreme 64GB $128
Seagate Barracuda 3TB (2016) $70G.SKILL Trident Z DDR4 3200 C14 4x16GB $606SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $78SanDisk Ultra Fit 32GB $12
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