Controller: Silicon Motion SM2246EN. NAND: Micron 20nm Synchronous MLC.

Controller: Marvell 88SS9187. Memory: SanDisk 19nm TLC.

Real World Speed
Performance profile from 14,219 user samples
1,454 User Benchmarks
Best Bench: 94% 64GB free
Worst Bench: 60% 84GB free
Poor: 60% Great: 94%
SPEED RANK: 214th / 869
12,765 User Benchmarks
Best Bench: 82% 223GB free
Worst Bench: 46% 189GB free
Poor: 46% Great: 82%
SPEED RANK: 429th / 869
Effective Speed
Effective SSD Speed
79.3 % Faster effective speed.
65 % -22%
Avg. Sequential Read Speed
493 MB/s Slightly faster read speed.
454 MB/s -9%
Avg. Sequential Write Speed
291 MB/s Faster write speed.
243 MB/s -20%
4K Read
Avg. 4K Random Read Speed
23.6 MB/s -15% 27.1 MB/s Slightly faster random read.
4K Write
Avg. 4K Random Write Speed
76.2 MB/s Much faster random write.
49.4 MB/s -54%
Avg. Sequential Mixed IO Speed
359 MB/s Much faster mixed IO speed.
238 MB/s -51%
4K Mixed
Avg. 4K Random Mixed IO Speed
26.7 MB/s Hugely faster random mixed IO.
14.6 MB/s -83%
Peak Sequential Read Speed
524 MB/s Slightly faster peak read speed.
496 MB/s -6%
Peak Sequential Write Speed
307 MB/s -11% 341 MB/s Slightly faster peak write speed.
4K Read
Peak 4K Random Read Speed
29.1 MB/s -25% 36.3 MB/s Faster peak random read.
4K Write
Peak 4K Random Write Speed
111 MB/s Much faster peak random write.
78.5 MB/s -41%
Peak Sequential Mixed IO Speed
383 MB/s Faster peak mixed IO speed.
327 MB/s -17%
4K Mixed
Peak 4K Random Mixed IO Speed
35.6 MB/s Much faster peak random mixed IO.
21 MB/s -70%
Market Share
Based on 5,263,698 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.03 % -1,400% 0.45 % Insanely higher market share.
Value For Money
64.5 % -16% 75.1 % Better value.
User Rating
UBM User Rating
62 % -2% 63 % +2%
Price (score)
$128 -41% $75 Much cheaper.
41 Months -2% 40 Months +2%
DQ Read
Peak 4K-64Thread Read Speed
280 MB/s -26% 354 MB/s Faster peak deep queue read.
DQ Write
Peak 4K-64Thread Write Speed
283 MB/s Much faster peak deep queue write.
206 MB/s -37%
AS-SSD Total
AS-SSD Total Score
971 Pts -2% 989 Pts +2%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
72.8 MB/s Much faster peak deep queue mixed IO.
50.8 MB/s -43%
ADQ Read
Avg. 4K-64Thread Read Speed
174 MB/s -4% 181 MB/s +4%
ADQ Write
Avg. 4K-64Thread Write Speed
203 MB/s Much faster deep queue write.
131 MB/s -55%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
48.3 MB/s Much faster deep queue mixed IO.
31.3 MB/s -54%
256GB 240GB

The 256GB Transcend SSD370 sports a Silicon Motion (SM2246EN) controller coupled with Micron 20nm synchronous MLC NAND. With peak sequential read/write speeds of 520/290 MBps and peak 4k read/write speeds of 29/116 the SSD370 has an effective speed which is amongst the bottom 25% of ~250GB drives. The effective speed is weighed down by a relatively weak sequential write speed of just 290 MBps. The performance highlight for the SSD370 is its ability to deal with mixed 4k IO which is arguably one of the best real world indicators. At current prices the SSD370 can't compete as there are both cheaper and faster alternatives on the market but prices are almost certain to drop at which time the SSD370 will fare far better in terms of value. [Oct '14 SSDrivePro]


The Sandisk Ultra II sits above Sandisk's Ultra Plus and below their Extreme Pro. The Ultra Plus would probably have been phased out completely were it not for its continued success within budget space. The Ultra II is the first Sandisk drive to utilize cheaper (and slower) TLC NAND. Similarly to the Extreme Pro, the Ultra II utilizes an nCache which operates a portion of the NAND in simulated SLC mode. This strategy also matches the one employed by Samsung's now 14 months old Evo. Comparing the Ultra II and Evo shows broad performance equivalence which given the Ultra II's 15% price discount makes it the better choice today. That said it's probably worth waiting for the release of the 850 Evo which will pack another 14 months of Samsung's market leading R&D and will probably steal the show. [Sep '14 SSDrivePro]


Solid State Drive Rankings (Price vs Performance) January 2018 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 $280Nvidia GTX 1070 $133Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $290Nvidia GTX 1060-6GB $275Samsung 850 Evo 500GB $138
Intel Core i5-7600K $210AMD RX 480 $400Samsung 850 Pro 256GB $110
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $205SanDisk Extreme 64GB $50
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $53Corsair Vengeance LPX DDR4 3200 C16 2x8GB $220SanDisk Ultra Fit 32GB $12
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