Average Bench: 148% (146th of 1058)

Based on 790 user benchmarks.  Model: APPLE SSD SM0256G

Outstanding average bench

The Apple SM0256G PCIe 251GB averaged 47.7% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Apple SM0256G PCIe 251GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 425MB/s
Avg. Sequential Read Speed 1,167MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Apple SM0256G PCIe 251GB is 114%. This is a particularly wide range which indicates that the Apple SM0256G PCIe 251GB performs inconsistently under varying real world conditions.


Avg. 4K Random Write Speed 70.9MB/s
Avg. 4K Random Mixed IO Speed 31.5MB/s

Average Bench

(Based on 790 samples)
Min Avg Max
631 Read 1,167 1,489
244 Write 812 1,211
305 Mixed 587 758
243 SusWrite 719 1,176
183% 821 MB/s
Min Avg Max
14.5 4K Read 34.6 41.9
15.3 4K Write 70.9 115
12.4 4K Mixed 31.5 50.3
130% 45.7 MB/s
Min Avg Max
251 DQ Read 504 629
149 DQ Write 321 396
226 DQ Mixed 425 516
314% 417 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
74GB free (System drive)
Firmware: BXW8SA0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 1218 1214 1217 1216 1037 854 MB/s
Read 1,291
Write 1,211
Mixed 728
SusWrite 1,126
245% 1089 MB/s
4K Read 37.7
4K Write 78.3
4K Mixed 45.2
156% 53.7 MB/s
DQ Read 449
DQ Write 354
DQ Mixed 399
299% 401 MB/s
234GB free
Firmware: BXW1SA0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 436 235 318 479 719 934 MB/s
Read 1,402
Write 1,146
Mixed 671
SusWrite 520
208% 935 MB/s
4K Read 34.7
4K Write 157
4K Mixed 49.2
199% 80.3 MB/s
DQ Read 628
DQ Write 270
DQ Mixed 402
310% 433 MB/s
790 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 44,171,647 SSDs tested.

Typical SM0256G PCIe 251GB Builds (Compare 309 builds) See popular component choices, score breakdowns and rankings.
Gaming 10%
Tree trunk
Desktop 60%
Workstation 9%
Tree trunk

System: Apple MacBookPro12,1


Popular SM0256G PCIe 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) June 2021 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.


1058 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 i5-11400F $220Nvidia RTX 3070 $500Crucial MX500 250GB $45
Intel Core i5-11600K $259Nvidia RTX 3060-Ti $400Samsung 850 Evo 120GB $78
Intel Core i7-10700K $277Nvidia RTX 3080 $700Samsung 860 Evo 250GB $52
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $94SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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