Average Bench: 60% (528th of 885)

Based on 245 user benchmarks.  Models: APPLE SSD SM256E, APPLE SSD SM256E (disk0)

Above average average bench

The Apple SM256E 251GB averaged 39.9% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. Sequential Read Speed 456MB/s
Avg. Sequential Mixed IO Speed 367MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Apple SM256E 251GB is 34%. This is a relatively narrow range which indicates that the Apple SM256E 251GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Write Speed 74.8MB/s
Avg. 4K-64Thread Read Speed 116MB/s

Average Bench

(Based on 245 samples)
Min Avg Max
364 Read 456 484
215 Write 356 428
206 Mixed 367 447
87.4% 393 MB/s
Min Avg Max
9.1 4K Read 13.7 22
14.3 4K Write 30.4 65.3
5.64 4K Mixed 12.2 22
52.5% 18.8 MB/s
Min Avg Max
9.49 DQ Read 116 256
18.6 DQ Write 74.8 106
6 DQ Mixed 35.3 70.9
42.6% 75.5 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
227GB free
Firmware: 7A1Q Max speed: SATA 3.0 600 MB/s
Read 475
Write 355
Mixed 398
91% 409 MB/s
4K Read 22.8
4K Write 69
4K Mixed 23.6
101% 38.5 MB/s
DQ Read 355
DQ Write 112
DQ Mixed 76.2
97% 181 MB/s
120GB free
Firmware: CXM09A1Q Max speed: SATA 3.0 600 MB/s
Read 478
Write 402
Mixed 432
98% 437 MB/s
4K Read 21.8
4K Write 60.1
4K Mixed 22.5
94% 34.8 MB/s
DQ Read 159
DQ Write 87.6
DQ Mixed 58.8
61% 102 MB/s
34GB free
Firmware: CXM09A1Q Max speed: SATA 3.0 600 MB/s
Read 418
Write 269
Mixed 288
72% 325 MB/s
4K Read 12.3
4K Write 23.5
4K Mixed 13.7
49% 16.5 MB/s
DQ Read 226
DQ Write 65.4
DQ Mixed 58.1
66% 117 MB/s
73GB free
Firmware: CXM09A1Q Max speed: SATA 3.0 600 MB/s
Read 459
Write 344
Mixed 385
88% 396 MB/s
4K Read 9.5
4K Write 22.6
4K Mixed 5.58
34% 12.6 MB/s
DQ Read 9.29
DQ Write 88.6
DQ Mixed 5.49
17% 34.5 MB/s
245 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 5,619,061 SSDs tested.

Typical SM256E 251GB Builds (Compare 264 builds) See popular component choices, score breakdowns and rankings.
Gaming 17%
Desktop 47%
Workstation 33%
Sail boat

System: Apple MacBookPro10,1


Popular SM256E 251GB systems:

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 userbenchmark.com.
  • - 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.
Solid State Drive Rankings (Price vs Performance) February 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.


885 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i7-8700K $330Nvidia GTX 1070 $430Samsung 850 Evo 250GB $87
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $146
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $125
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $50
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 $200SanDisk Extreme 16GB $18
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