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

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

Real World Speed
Performance profile from 38,735 user samples
1,602 User Benchmarks
Best Bench: 93% 123GB free
Worst Bench: 60% 84GB free
Poor: 60% Great: 93%
SPEED RANK: 238th / 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
79 % 98.3 % Faster effective speed.
Avg. Sequential Read Speed
495 MB/s 502 MB/s +1%
Avg. Sequential Write Speed
290 MB/s 441 MB/s Much faster write speed.
4K Read
Avg. 4K Random Read Speed
23.4 MB/s 32.6 MB/s Much faster random read.
4K Write
Avg. 4K Random Write Speed
76.5 MB/s 85.9 MB/s Slightly faster random write.
Avg. Sequential Mixed IO Speed
362 MB/s 460 MB/s Faster mixed IO speed.
4K Mixed
Avg. 4K Random Mixed IO Speed
26.2 MB/s 34.4 MB/s Much faster random mixed IO.
Peak Sequential Read Speed
525 MB/s 528 MB/s +1%
Peak Sequential Write Speed
304 MB/s 502 MB/s Much faster peak write speed.
4K Read
Peak 4K Random Read Speed
29 MB/s 42.1 MB/s Much faster peak random read.
4K Write
Peak 4K Random Write Speed
110 MB/s 121 MB/s Slightly faster peak random write.
Peak Sequential Mixed IO Speed
382 MB/s 513 MB/s Much faster peak mixed IO speed.
4K Mixed
Peak 4K Random Mixed IO Speed
35.1 MB/s 50.8 MB/s Much faster peak random mixed IO.
Market Share
Based on 6,060,410 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.06 % 0.75 % Insanely higher market share.
Value For Money
68 % 75.2 % Slightly better value.
User Rating
UBM User Rating
62 % 99 % Much more popular.
Price (score)
$118 Slightly cheaper.
43 Months +2% 44 Months
DQ Read
Peak 4K-64Thread Read Speed
281 MB/s 375 MB/s Much faster peak deep queue read.
DQ Write
Peak 4K-64Thread Write Speed
283 MB/s 336 MB/s Faster peak deep queue write.
AS-SSD Total
AS-SSD Total Score
971 Pts 1,232 Pts Stronger server IO.
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
72.5 MB/s 163 MB/s Hugely faster peak deep queue mixed IO.
ADQ Read
Avg. 4K-64Thread Read Speed
172 MB/s 196 MB/s Slightly faster deep queue read.
ADQ Write
Avg. 4K-64Thread Write Speed
200 MB/s 211 MB/s Slightly faster deep queue write.
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
47.8 MB/s 88 MB/s Hugely faster deep queue mixed IO.
256GB 256GB

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 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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