Controller: Marvell 88SS9189. Flash Memory: Micron 16nm MLC.

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

Real World Speed
Performance profile from 22,987 user samples
18,885 User Benchmarks
Best Bench: 95% 59GB free
Worst Bench: 61% 184GB free
Poor: 61% Great: 95%
SPEED RANK: 214th / 908
4,102 User Benchmarks
Best Bench: 106% 197GB free
Worst Bench: 57% 20GB free
Poor: 57% Great: 106%
SPEED RANK: 173rd / 908
Effective Speed
Effective SSD Speed
80.7 % 83.2 % +3%
Avg. Sequential Read Speed
496 MB/s Slightly faster read speed.
472 MB/s
Avg. Sequential Write Speed
321 MB/s 413 MB/s Faster write speed.
4K Read
Avg. 4K Random Read Speed
25.5 MB/s 27.3 MB/s Slightly faster random read.
4K Write
Avg. 4K Random Write Speed
82.4 MB/s Faster random write.
69.9 MB/s
Avg. Sequential Mixed IO Speed
370 MB/s 411 MB/s Slightly faster mixed IO speed.
4K Mixed
Avg. 4K Random Mixed IO Speed
24.8 MB/s Faster random mixed IO.
21.2 MB/s
Peak Sequential Read Speed
522 MB/s +1% 515 MB/s
Peak Sequential Write Speed
331 MB/s 495 MB/s Much faster peak write speed.
4K Read
Peak 4K Random Read Speed
30.9 MB/s 35.3 MB/s Slightly faster peak random read.
4K Write
Peak 4K Random Write Speed
115 MB/s +4% 111 MB/s
Peak Sequential Mixed IO Speed
397 MB/s 483 MB/s Faster peak mixed IO speed.
4K Mixed
Peak 4K Random Mixed IO Speed
33.4 MB/s Slightly faster peak random mixed IO.
29.5 MB/s
Market Share
Based on 6,044,896 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.37 % Hugely higher market share.
0.1 %
Value For Money
70.6 % 74.7 % Slightly better value.
User Rating
UBM User Rating
64 % 64 %
Price (score)
$116 $105 Slightly cheaper.
45 Months 45 Months
DQ Read
Peak 4K-64Thread Read Speed
215 MB/s 358 MB/s Much faster peak deep queue read.
DQ Write
Peak 4K-64Thread Write Speed
301 MB/s 316 MB/s +5%
AS-SSD Total
AS-SSD Total Score
902 Pts 1,160 Pts Stronger server IO.
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
52.6 MB/s 65.3 MB/s Faster peak deep queue mixed IO.
ADQ Read
Avg. 4K-64Thread Read Speed
122 MB/s 167 MB/s Much faster deep queue read.
ADQ Write
Avg. 4K-64Thread Write Speed
197 MB/s Slightly faster deep queue write.
181 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
36 MB/s 42.6 MB/s Faster deep queue mixed IO.
256GB 240GB

The Crucial MX100 is the first 16nm SSD to date. Aside from NAND, the MX100 shares the same hardware as its more expensive sibling, the M550. Comparing the MX100 and M550 shows that the two drives have similar read speeds but that the MX100 lags by nearly 50% at writing. The newer 16nm NAND reduces costs and accordingly the MX100 is the cheapest SSD (per GB) to date. In terms of performance the MX100 is a compromise which may or may not be worth making depending on individual circumstances. For typical desktop use including email, office documents and web browsing the MX100 is a great choice but power users should look elsewhere. Comparing the 250GB 840 EVO and 256GB MX100 shows that for a marginal premium, the Evo offers better write speeds. (Note: at 500GB they are more evenly matched) [Jun '14 SSDrivePro]


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]


Solid State Drive Rankings (Price vs Performance) March 2018 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]


Group Test Results

  • Best user rated - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.
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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $85
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $335Samsung 850 Evo 500GB $150
Intel Core i5-8600K $243AMD RX 480 $400Samsung 850 Pro 256GB $120
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $190SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $212SanDisk Extreme 16GB $18
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