Average Bench: 180% (101st of 1040)

Based on 110 user benchmarks.  Model: APPLE SSD SM0256L

Outstanding average bench

The Apple SM0256L 251GB averaged 80.5% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Apple SM0256L 251GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 634MB/s
Avg. 4K-64Thread Read Speed 1,072MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Apple SM0256L 251GB is 139%. This is a particularly wide range which indicates that the Apple SM0256L 251GB performs inconsistently under varying real world conditions.


Avg. 4K Random Write Speed 53.6MB/s
Avg. 4K Random Mixed IO Speed 23.1MB/s

Average Bench

(Based on 110 samples)
Min Avg Max
874 Read 1,344 2,861
40.9 Write 998 1,439
81.9 Mixed 657 888
39.4 SusWrite 990 1,346
223% 997 MB/s
Min Avg Max
10.3 4K Read 42.9 214
1.71 4K Write 53.6 145
3.96 4K Mixed 23.1 35.2
123% 39.8 MB/s
Min Avg Max
613 DQ Read 1,072 1,395
384 DQ Write 432 462
580 DQ Mixed 634 703
500% 713 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
150GB free (System drive)
Firmware: CXS7LA0Q
SusWrite @10s intervals: 1111 1110 1144 1080 1078 1078 MB/s
Read 1,302
Write 1,190
Mixed 751
SusWrite 1,100
244% 1,086 MB/s
4K Read 26.4
4K Write 69.2
4K Mixed 33.2
119% 42.9 MB/s
DQ Read 1,345
DQ Write 456
DQ Mixed 598
521% 800 MB/s
91GB free (System drive)
Firmware: CXS7CA0Q
SusWrite @10s intervals: 783 742 721 718 701 666 MB/s
Read 1,296
Write 1,012
Mixed 630
SusWrite 722
204% 915 MB/s
4K Read 21.3
4K Write 51.8
4K Mixed 28.2
96% 33.8 MB/s
DQ Read 1,345
DQ Write 342
DQ Mixed 616
512% 768 MB/s
100GB free (System drive)
Firmware: CXS5EA0Q
SusWrite @10s intervals: 926 975 1064 1052 1086 970 MB/s
Read 961
Write 932
Mixed 661
SusWrite 1,012
201% 892 MB/s
4K Read 12.8
4K Write 14.6
4K Mixed 12.8
44% 13.4 MB/s
DQ Read 839
DQ Write 458
DQ Mixed 599
459% 632 MB/s
110 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 35,035,478 SSDs tested.

Typical SM0256L 251GB Builds (Compare 175 builds) See popular component choices, score breakdowns and rankings.
Gaming 21%
Desktop 79%
Workstation 18%

System: Apple MacBookPro14,3


Popular SM0256L 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.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) December 2020 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 - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.


1040 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 i5-9600K $197Nvidia RTX 3070 $500Crucial MX500 250GB $34
Intel Core i5-9400F $155Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $78
Intel Core i5-10600K $268Nvidia GTX 1650S (Super) $190Samsung 850 Pro 512GB $177
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $64SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $69SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $639SanDisk Ultra Fit 32GB $16
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