SamsungMZ-75E250B
SamsungMZ-7PD256BW

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

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

Real World Speed
Performance profile from 630,893 user samples
583,942 User Benchmarks
Best Bench: 123% 181GB free (System drive)
Worst Bench: 68% 97GB free (System drive)
Poor: 68% Great: 123%
SPEED RANK: 202nd / 1021
46,951 User Benchmarks
Best Bench: 115% 189GB free
Worst Bench: 63% 67GB free (System drive)
Poor: 63% Great: 115%
SPEED RANK: 257th / 1021
Effective Speed
Effective SSD Speed
103 % Faster effective speed.
+12%
92 %
Read
Avg. Sequential Read Speed
467 MB/s +2% 457 MB/s
Write
Avg. Sequential Write Speed
429 MB/s Faster write speed.
+19%
362 MB/s
4K Read
Avg. 4K Random Read Speed
39.1 MB/s Faster random read.
+29%
30.3 MB/s
4K Write
Avg. 4K Random Write Speed
93.7 MB/s Faster random write.
+17%
80.4 MB/s
Mixed
Avg. Sequential Mixed IO Speed
366 MB/s Faster mixed IO speed.
+24%
295 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
51.8 MB/s Much faster random mixed IO.
+36%
38.2 MB/s
SusWrite
Avg. Sustained Write Speed
253 MB/s 300 MB/s Faster sustained write speed.
+19%
Read
Peak Sequential Read Speed
506 MB/s 510 MB/s +1%
Write
Peak Sequential Write Speed
492 MB/s +2% 483 MB/s
4K Read
Peak 4K Random Read Speed
47.5 MB/s Much faster peak random read.
+32%
36.1 MB/s
4K Write
Peak 4K Random Write Speed
129 MB/s Faster peak random write.
+11%
116 MB/s
Mixed
Peak Sequential Mixed IO Speed
418 MB/s Faster peak mixed IO speed.
+16%
361 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
64.5 MB/s Much faster peak random mixed IO.
+37%
47.1 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
326 MB/s 468 MB/s Much faster peak sustained write speed.
+44%
Market Share
Based on 26,445,205 SSDs tested.
Market Share
Market Share (trailing 30 days)
2.34 % Insanely higher market share.
+1,132%
0.19 %
Value
Value For Money
16.5 % Much better value.
+36%
12.1 %
User Rating
UBM User Rating
70 % Slightly more popular.
+9%
64 %
Price
Price (score)
$75 Cheaper.
+25%
$100
Age
Newest
65 Months More recent.
+29%
91 Months
DQ Read
Peak 4K-64Thread Read Speed
386 MB/s +0% 385 MB/s
DQ Write
Peak 4K-64Thread Write Speed
361 MB/s Slightly faster peak deep queue write.
+9%
332 MB/s
AS-SSD Total
AS-SSD Total Score
1,288 Pts Slightly stronger server IO.
+6%
1,221 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
368 MB/s Hugely faster peak deep queue mixed IO.
+110%
175 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
339 MB/s +1% 335 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
300 MB/s Faster deep queue write.
+19%
253 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
308 MB/s Hugely faster deep queue mixed IO.
+118%
141 MB/s
Capacity
Capacity
250GB 256GB
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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

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

Solid State Drive Rankings (Price vs Performance) May 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 i5-9400F $165Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $49
Intel Core i5-9600K $199Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $365Nvidia RTX 2070S (Super) $500Samsung 860 Evo 250GB $55
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Ultra Fit 32GB $16
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