SamsungMZ-7PD256BW
SamsungMZ-75E250B

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

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

Real World Speed
Performance profile from 1,024,710 user samples
73,119 User Benchmarks
Best Bench: 116% 238GB free
Worst Bench: 68% 11GB free (System drive)
Poor: 68% Great: 116%
SPEED RANK: 277th / 1069
951,591 User Benchmarks
Best Bench: 124% 140GB free
Worst Bench: 72% 233GB free
Poor: 72% Great: 124%
SPEED RANK: 240th / 1069
Effective Speed
Effective SSD Speed
95 % 103 % Slightly faster effective speed.
+9%
Read
Avg. Sequential Read Speed
459 MB/s 466 MB/s +2%
Write
Avg. Sequential Write Speed
367 MB/s 434 MB/s Faster write speed.
+18%
4K Read
Avg. 4K Random Read Speed
31 MB/s 39.4 MB/s Faster random read.
+27%
4K Write
Avg. 4K Random Write Speed
85.6 MB/s 94.6 MB/s Faster random write.
+11%
Mixed
Avg. Sequential Mixed IO Speed
303 MB/s 370 MB/s Faster mixed IO speed.
+22%
4K Mixed
Avg. 4K Random Mixed IO Speed
39.5 MB/s 52.2 MB/s Much faster random mixed IO.
+32%
SusWrite
Avg. Sustained Write Speed
312 MB/s Faster sustained write speed.
+26%
247 MB/s
Read
Peak Sequential Read Speed
510 MB/s +1% 507 MB/s
Write
Peak Sequential Write Speed
480 MB/s 492 MB/s +2%
4K Read
Peak 4K Random Read Speed
36.1 MB/s 47.6 MB/s Much faster peak random read.
+32%
4K Write
Peak 4K Random Write Speed
114 MB/s 129 MB/s Faster peak random write.
+13%
Mixed
Peak Sequential Mixed IO Speed
368 MB/s 416 MB/s Faster peak mixed IO speed.
+13%
4K Mixed
Peak 4K Random Mixed IO Speed
47.6 MB/s 64.6 MB/s Much faster peak random mixed IO.
+36%
SusWrite
Peak Sequential Sustained Write 60s Average
477 MB/s Much faster peak sustained write speed.
+45%
328 MB/s
Market Share
Based on 60,767,208 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.07 % 1.14 % Insanely higher market share.
+1,529%
Value
Value For Money
7.46 % 13.4 % Much better value.
+79%
User Rating
UBM User Rating
54 % 56 % +4%
Price
Price (score)
$199 $100 Much cheaper.
+50%
Age
Newest
121 Months 95 Months More recent.
+21%
DQ Read
Peak 4K-64Thread Read Speed
385 MB/s 386 MB/s +0%
DQ Write
Peak 4K-64Thread Write Speed
334 MB/s 362 MB/s Slightly faster peak deep queue write.
+8%
AS-SSD Total
AS-SSD Total Score
1,221 Pts 1,290 Pts Slightly stronger server IO.
+6%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
176 MB/s 370 MB/s Hugely faster peak deep queue mixed IO.
+110%
ADQ Read
Avg. 4K-64Thread Read Speed
346 MB/s 354 MB/s +2%
ADQ Write
Avg. 4K-64Thread Write Speed
262 MB/s 308 MB/s Faster deep queue write.
+18%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
147 MB/s 320 MB/s Hugely faster deep queue mixed IO.
+118%
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) November 2022 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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-13600K $320Nvidia RTX 3060-Ti $468Crucial MX500 250GB $37
Intel Core i7-12700K $329Nvidia RTX 3070 $450Samsung 850 Evo 120GB $106
Intel Core i5-12400F $170Nvidia RTX 3050 $270Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $41Corsair Vengeance LPX DDR4 3000 C15 2x8GB $50SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $29Corsair Vengeance LPX DDR4 3200 C16 2x8GB $50SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $453SanDisk Ultra Fit 32GB $16
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