SamsungMZ-7PD256BW
SamsungMZ-75E250B

Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC. Release date: Q4 2012.

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Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND. Release date: Q4 2014.

Real World Speed
Performance profile from 588,870 user samples
41,933 User Benchmarks
Best Bench: 115% 94GB free (System drive)
Worst Bench: 63% 53GB free (System drive)
Poor: 63% Great: 115%
SPEED RANK: 263rd / 1016
546,937 User Benchmarks
Best Bench: 125% 233GB free
Worst Bench: 79% 39GB free (System drive)
Poor: 79% Great: 125%
SPEED RANK: 191st / 1016
Effective Speed
Effective SSD Speed
91.3 % 106 % Faster effective speed.
+16%
Read
Avg. Sequential Read Speed
454 MB/s 472 MB/s +4%
Write
Avg. Sequential Write Speed
363 MB/s 440 MB/s Faster write speed.
+21%
4K Read
Avg. 4K Random Read Speed
30 MB/s 40.5 MB/s Much faster random read.
+35%
4K Write
Avg. 4K Random Write Speed
81.3 MB/s 99.3 MB/s Faster random write.
+22%
Mixed
Avg. Sequential Mixed IO Speed
294 MB/s 373 MB/s Faster mixed IO speed.
+27%
4K Mixed
Avg. 4K Random Mixed IO Speed
38.3 MB/s 54.3 MB/s Much faster random mixed IO.
+42%
SusWrite
Avg. Sustained Write Speed
297 MB/s Faster sustained write speed.
+17%
254 MB/s
Read
Peak Sequential Read Speed
509 MB/s +0% 507 MB/s
Write
Peak Sequential Write Speed
477 MB/s 492 MB/s +3%
4K Read
Peak 4K Random Read Speed
36.4 MB/s 48.2 MB/s Much faster peak random read.
+32%
4K Write
Peak 4K Random Write Speed
115 MB/s 133 MB/s Faster peak random write.
+16%
Mixed
Peak Sequential Mixed IO Speed
360 MB/s 415 MB/s Faster peak mixed IO speed.
+15%
4K Mixed
Peak 4K Random Mixed IO Speed
47.6 MB/s 66 MB/s Much faster peak random mixed IO.
+39%
SusWrite
Peak Sequential Sustained Write 60s Average
474 MB/s Much faster peak sustained write speed.
+45%
326 MB/s
Market Share
Based on 21,413,271 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.2 % 2.36 % Insanely higher market share.
+1,080%
Value
Value For Money
12 % 22 % Hugely better value.
+83%
User Rating
UBM User Rating
64 % 70 % Slightly more popular.
+9%
Price
Price (score)
$100 $53 Much cheaper.
+47%
Age
Newest
87 Months 61 Months More recent.
+30%
DQ Read
Peak 4K-64Thread Read Speed
386 MB/s +0% 385 MB/s
DQ Write
Peak 4K-64Thread Write Speed
333 MB/s 362 MB/s Slightly faster peak deep queue write.
+9%
AS-SSD Total
AS-SSD Total Score
1,222 Pts 1,293 Pts Slightly stronger server IO.
+6%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
175 MB/s 369 MB/s Hugely faster peak deep queue mixed IO.
+111%
ADQ Read
Avg. 4K-64Thread Read Speed
317 MB/s 339 MB/s Slightly faster deep queue read.
+7%
ADQ Write
Avg. 4K-64Thread Write Speed
247 MB/s 302 MB/s Faster deep queue write.
+22%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
137 MB/s 311 MB/s Hugely faster deep queue mixed IO.
+127%
Capacity
Capacity
256GB 250GB
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The 840 Pro is stunning. Samsung have created a completely in-house package including both the controller and their own new 21nm toggle mode NAND. On release (Oct '12) this was the fastest performing deep queue depth consumer grade SSD available. Fast forward six months (Apr '13) and the 840 Pro still holds both the random read/write deep queue depth speed records of 384 MB/s and 326 MB/s, impressive considering how fast the SSD space tends to move. There are no obvious weaknesses, in-fact the 840 pro takes first place in nearly all of the speed categories and is only seriously rivalled by one drive, the OCZ Vector. To conclude, in terms of both outright performance, particularly server orientated, and value for money the 256GB and 128GB 840 Pros are amongst the top handful of drives currently available. [Jun '13 SSDrivePro]

MORE DETAILS

The 250GB Samsung 850 Evo has a similar architecture to its hugely successful predecessor, the 840 Evo. Both drives are TLC based but the 850 uses 3D V-NAND as opposed to regular NAND. Both drives also feature a Turbowrite cache (TWC) which buffers up to 3GB of writes. The TWC enables high burst write speeds but when the cache exhausts write speeds drop to 300 MB/s. Comparing the 850 and 840 Evos shows that effective speed, has improved by 11% and the warranty has been extended from three to five years but prices are also up by 11%. The 850 Evo does put in superb benchmarks (second only to the 850 Pro) but these are only valid within the TWC. At current price levels the 850 Evo struggles to compete with the value leaders[Dec '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) January 2020 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 i5-9600K $205Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $45
Intel Core i5-9400F $150Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $375Nvidia RTX 2060 $349Samsung 850 Pro 512GB $249
HDDRAMUSB
Seagate Barracuda 1TB (2016) $35Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $653SanDisk Ultra Fit 32GB $14
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