Controller: Marvell 88SS1074. Flash Memory: Micron 3D TLC.

Controller: Samsung Triple Core MEX. Memory: Samsung 40nm MLC V-NAND

Real World Speed
Performance profile from 53,275 user samples
16,142 User Benchmarks
Best Bench: 82% 188GB free
Worst Bench: 49% 168GB free
Poor: 49% Great: 82%
SPEED RANK: 392nd / 911
37,133 User Benchmarks
Best Bench: 121% 182GB free
Worst Bench: 71% 141GB free
Poor: 71% Great: 121%
SPEED RANK: 80th / 911
Effective Speed
Effective SSD Speed
68.4 % 98.3 % Much faster effective speed.
Avg. Sequential Read Speed
462 MB/s 502 MB/s Slightly faster read speed.
Avg. Sequential Write Speed
297 MB/s 441 MB/s Much faster write speed.
4K Read
Avg. 4K Random Read Speed
22.7 MB/s 32.6 MB/s Much faster random read.
4K Write
Avg. 4K Random Write Speed
57.7 MB/s 85.9 MB/s Much faster random write.
Avg. Sequential Mixed IO Speed
307 MB/s 460 MB/s Much faster mixed IO speed.
4K Mixed
Avg. 4K Random Mixed IO Speed
17.4 MB/s 34.4 MB/s Hugely faster random mixed IO.
Peak Sequential Read Speed
484 MB/s 528 MB/s Slightly faster peak read speed.
Peak Sequential Write Speed
339 MB/s 502 MB/s Much faster peak write speed.
4K Read
Peak 4K Random Read Speed
27.4 MB/s 42.1 MB/s Much faster peak random read.
4K Write
Peak 4K Random Write Speed
79.7 MB/s 121 MB/s Much faster peak random write.
Peak Sequential Mixed IO Speed
339 MB/s 513 MB/s Much faster peak mixed IO speed.
4K Mixed
Peak 4K Random Mixed IO Speed
24.3 MB/s 50.8 MB/s Hugely faster peak random mixed IO.
Market Share
Based on 6,060,662 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.6 % 0.75 % Higher market share.
Value For Money
83.5 % Slightly better value.
75.2 %
User Rating
UBM User Rating
67 % 99 % Much more popular.
Price (score)
$80 Much cheaper.
21 Months Much more recent.
44 Months
DQ Read
Peak 4K-64Thread Read Speed
230 MB/s 375 MB/s Much faster peak deep queue read.
DQ Write
Peak 4K-64Thread Write Speed
221 MB/s 336 MB/s Much faster peak deep queue write.
AS-SSD Total
AS-SSD Total Score
800 Pts 1,232 Pts Much stronger server IO.
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
40.4 MB/s 163 MB/s Hugely faster peak deep queue mixed IO.
ADQ Read
Avg. 4K-64Thread Read Speed
135 MB/s 196 MB/s Much faster deep queue read.
ADQ Write
Avg. 4K-64Thread Write Speed
133 MB/s 211 MB/s Much faster deep queue write.
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
26.2 MB/s 88 MB/s Hugely faster deep queue mixed IO.
275GB 256GB

The 275GB Crucial MX300 supersedes the MX200. Unlike its predecessor, the MX300 is TLC based and therefore suffers from weak write speeds in comparison to MLC drives. The MX300 utilises a sophisticated algorithm to enable fast burst write speeds provided that there is sufficient free space on the disk but as the drive fills up write performance drops to the relatively poor levels seen on other TLC drives (similar to mechanical drives). At current prices (70 USD) the MX300 competes well with other low end drives such as the OCZ Trion, Adata SP550 and Samsung 750 EVO. As stocks build the MX300 is likely to see further price cuts, so it could become a very interesting value proposition. See the current value leaders here[Sep '16 SSDrivePro]


The 256GB Samsung 850 Pro is the fastest consumer SSD we have seen to date. Thanks to Samsung's new 3D V-NAND the 850 Pro has lower power consumption and better performance, albeit marginally, than both the 840 Evo and 840 Pro. Looking at the benchmark figures for the 840 and 850 Pros shows that the effective performance improvement is 10% whereas the 850 Pro beats the 840 Evo by 16%. These drives effectively saturate SATA 3.0 making it difficult to distinguish between them in day-to-day use. At current prices the 850 Pro is prohibitively expensive, prices need to drop by 15% before it approaches the 840 Pro from a value perspective. Samsung may release a value orientated 850 Evo soon, but for now "most" users are better off with the 840 Pro. [Oct '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

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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
AMD Ryzen 5 1600 $188AMD RX 480 $400Samsung 850 Pro 256GB $139
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 $216SanDisk Extreme 16GB $18
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