AdataASP550SS3-240GM-C
SamsungMZ-75E250B

Controller: Silicon Motion SM2256. Flash Memory: SK Hynix 16nm TLC. Release date: Q3 2015.

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

Real World Speed
Performance profile from 843,097 user samples
25,134 User Benchmarks
Best Bench: 93% 63GB free (System drive)
Worst Bench: 58% 223GB free
Poor: 58% Great: 93%
SPEED RANK: 480th / 1058
817,963 User Benchmarks
Best Bench: 123% 82GB free
Worst Bench: 68% 100GB free (System drive)
Poor: 68% Great: 123%
SPEED RANK: 232nd / 1058
Effective Speed
Effective SSD Speed
79.7 % 102 % Faster effective speed.
+29%
Read
Avg. Sequential Read Speed
468 MB/s 470 MB/s +0%
Write
Avg. Sequential Write Speed
353 MB/s 431 MB/s Faster write speed.
+22%
4K Read
Avg. 4K Random Read Speed
29.2 MB/s 39.7 MB/s Much faster random read.
+36%
4K Write
Avg. 4K Random Write Speed
80.3 MB/s 92.6 MB/s Faster random write.
+15%
Mixed
Avg. Sequential Mixed IO Speed
348 MB/s 368 MB/s Slightly faster mixed IO speed.
+6%
4K Mixed
Avg. 4K Random Mixed IO Speed
40.4 MB/s 51.7 MB/s Faster random mixed IO.
+28%
SusWrite
Avg. Sustained Write Speed
91 MB/s 244 MB/s Hugely faster sustained write speed.
+168%
Read
Peak Sequential Read Speed
508 MB/s +0% 507 MB/s
Write
Peak Sequential Write Speed
455 MB/s 491 MB/s Slightly faster peak write speed.
+8%
4K Read
Peak 4K Random Read Speed
34.7 MB/s 47.8 MB/s Much faster peak random read.
+38%
4K Write
Peak 4K Random Write Speed
111 MB/s 127 MB/s Faster peak random write.
+14%
Mixed
Peak Sequential Mixed IO Speed
406 MB/s 416 MB/s +2%
4K Mixed
Peak 4K Random Mixed IO Speed
50 MB/s 64.7 MB/s Faster peak random mixed IO.
+29%
SusWrite
Peak Sequential Sustained Write 60s Average
117 MB/s 326 MB/s Hugely faster peak sustained write speed.
+179%
Market Share
Based on 45,317,496 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.05 % 1.16 % Insanely higher market share.
+2,220%
Value
Value For Money
12.5 % 13.2 % Slightly better value.
+6%
User Rating
UBM User Rating
53 % 56 % Slightly more popular.
+6%
Price
Price (score)
$74 Cheaper.
+26%
$100
Age
Newest
70 Months More recent.
+11%
79 Months
DQ Read
Peak 4K-64Thread Read Speed
337 MB/s 386 MB/s Faster peak deep queue read.
+15%
DQ Write
Peak 4K-64Thread Write Speed
342 MB/s 362 MB/s Slightly faster peak deep queue write.
+6%
AS-SSD Total
AS-SSD Total Score
1,147 Pts 1,288 Pts Stronger server IO.
+12%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
254 MB/s 369 MB/s Much faster peak deep queue mixed IO.
+45%
ADQ Read
Avg. 4K-64Thread Read Speed
288 MB/s 341 MB/s Faster deep queue read.
+18%
ADQ Write
Avg. 4K-64Thread Write Speed
267 MB/s 298 MB/s Faster deep queue write.
+12%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
211 MB/s 307 MB/s Much faster deep queue mixed IO.
+45%
Capacity
Capacity
240GB 250GB
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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

Solid State Drive Rankings (Price vs Performance) July 2021 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 i5-11400F $268Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11600K $270Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-10700K $304Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $78
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $29Corsair Vengeance LPX DDR4 3000 C15 2x8GB $85SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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