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

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

Real World Speed
Performance profile from 8,282 user samples
799 User Benchmarks
Best Bench: 101% 98GB free
Worst Bench: 60% 44GB free
Poor: 60% Great: 101%
SPEED RANK: 172nd / 859
7,483 User Benchmarks
Best Bench: 81% 118GB free
Worst Bench: 51% 179GB free
Poor: 51% Great: 81%
SPEED RANK: 347th / 859
Effective Speed
Effective SSD Speed
81.7 % Faster effective speed.
68.4 % -20%
Avg. Sequential Read Speed
452 MB/s -3% 464 MB/s +3%
Avg. Sequential Write Speed
369 MB/s Faster write speed.
298 MB/s -24%
4K Read
Avg. 4K Random Read Speed
27.8 MB/s Faster random read.
22.5 MB/s -24%
4K Write
Avg. 4K Random Write Speed
79.6 MB/s Much faster random write.
58.5 MB/s -36%
Avg. Sequential Mixed IO Speed
366 MB/s Faster mixed IO speed.
308 MB/s -19%
4K Mixed
Avg. 4K Random Mixed IO Speed
20.8 MB/s Faster random mixed IO.
17 MB/s -22%
Peak Sequential Read Speed
486 MB/s +0% 484 MB/s -0%
Peak Sequential Write Speed
474 MB/s Much faster peak write speed.
338 MB/s -40%
4K Read
Peak 4K Random Read Speed
35.1 MB/s Faster peak random read.
27.5 MB/s -28%
4K Write
Peak 4K Random Write Speed
120 MB/s Much faster peak random write.
81.7 MB/s -47%
Peak Sequential Mixed IO Speed
453 MB/s Much faster peak mixed IO speed.
339 MB/s -34%
4K Mixed
Peak 4K Random Mixed IO Speed
28.5 MB/s Faster peak random mixed IO.
24.3 MB/s -17%
Market Share
Based on 3,842,931 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.03 % -2,333% 0.73 % Insanely higher market share.
Value For Money
73.4 % -2% 74.5 % +2%
User Rating
UBM User Rating
63 % -3% 65 % +3%
Price (score)
$105 -11% $93 Slightly cheaper.
52 Months -71% 15 Months Much more recent.
DQ Read
Peak 4K-64Thread Read Speed
357 MB/s Much faster peak deep queue read.
230 MB/s -55%
DQ Write
Peak 4K-64Thread Write Speed
298 MB/s Much faster peak deep queue write.
221 MB/s -35%
AS-SSD Total
AS-SSD Total Score
1,143 Pts Much stronger server IO.
802 Pts -43%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
67.5 MB/s Much faster peak deep queue mixed IO.
40.4 MB/s -67%
ADQ Read
Avg. 4K-64Thread Read Speed
180 MB/s Much faster deep queue read.
128 MB/s -41%
ADQ Write
Avg. 4K-64Thread Write Speed
198 MB/s Much faster deep queue write.
138 MB/s -43%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
42.1 MB/s Much faster deep queue mixed IO.
26.2 MB/s -61%
240GB 275GB

The Sandisk Extreme II uses the 88SS9187-BLD2 controller, Marvel's latest, and Sandisk's own 19MM MLC Memory. On paper this makes an extremely good combination and the benchmarks agree. The Extreme II scored an impressive 1143 in the server orientated AS SSD Benchmark putting it amongst the more capable server drives. In terms of real world consumer performance the Extreme II also fared well achieving a real world speed index score of 570.5 MB/s, amongst the top three scores we have seen to date. The Extreme II has everything going for it apart from its price which is currently significantly above average and hurting its value rating. Because the Extreme is the newest SSD we have in our group test we expect prices will drop with time. Until then, however, there is better value to be had elsewhere. [Jun '13 SSDrivePro]


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]


Solid State Drive Rankings (Price vs Performance) September 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]

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 i7-7700K $297Nvidia GTX 1070 $410Samsung 850 Evo 250GB $97
AMD Ryzen 7 1700 $270AMD RX 480 $350Samsung 850 Pro 256GB $120
Intel Core i5-7600K $220Nvidia GTX 1060-6GB $265Samsung 850 Evo 500GB $149
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $724SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $77Corsair Vengeance LPX DDR4 3000 C15 2x8GB $152SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $40HyperX Fury DDR4 2133 C14 2x8GB $141SanDisk Extreme 16GB $20
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