Average Bench: 145% (148th of 1058)

Based on 7,691 user benchmarks.  Model: SK hynix BC511 HFM256GDJTNI-82A0A

Outstanding average bench

The SK hynix BC511 HFM256GDJTNI-82A0A 256GB averaged 44.9% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the SK hynix BC511 HFM256GDJTNI-82A0A 256GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 498MB/s
Avg. 4K-64Thread Read Speed 676MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the SK hynix BC511 HFM256GDJTNI-82A0A 256GB is 87.7%. This is a particularly wide range which indicates that the SK hynix BC511 HFM256GDJTNI-82A0A 256GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 342MB/s
Avg. 4K Random Write Speed 104MB/s

Average Bench

(Based on 7,691 samples)
Min Avg Max
523 Read 875 1,057
327 Write 803 924
325 Mixed 761 947
194 SusWrite 342 527
156% 695 MB/s
Min Avg Max
24.7 4K Read 47.4 56.9
52.4 4K Write 104 150
30.8 4K Mixed 57.2 75.2
200% 69.7 MB/s
Min Avg Max
386 DQ Read 676 784
188 DQ Write 548 752
246 DQ Mixed 498 672
404% 574 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: HPS0
SusWrite @10s intervals: 301 261 238 225 248 206 MB/s
Read 975
Write 867
Mixed 893
SusWrite 246
167% 745 MB/s
4K Read 44.5
4K Write 95.4
4K Mixed 56.8
191% 65.6 MB/s
DQ Read 729
DQ Write 511
DQ Mixed 282
302% 507 MB/s
102GB free (System drive)
Firmware: HPS0
SusWrite @10s intervals: 224 238 219 211 218 219 MB/s
Read 385
Write 330
Mixed 317
SusWrite 221
70% 313 MB/s
4K Read 36.4
4K Write 56.9
4K Mixed 42.7
140% 45.3 MB/s
DQ Read 416
DQ Write 370
DQ Mixed 425
310% 404 MB/s
88GB free (System drive)
Firmware: HPS0
SusWrite @10s intervals: 304 245 300 273 95 84 MB/s
Read 383
Write 344
Mixed 338
SusWrite 217
72% 321 MB/s
4K Read 25.9
4K Write 39.2
4K Mixed 31.3
100% 32.1 MB/s
DQ Read 421
DQ Write 374
DQ Mixed 599
394% 465 MB/s
7,691 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 49,498,523 SSDs tested.

Typical hynix BC511 HFM256GDJTNI-82A0A 256GB Builds (Compare 7,123 builds) See popular component choices, score breakdowns and rankings.
Gaming 51%
Desktop 85%
Aircraft carrier
Workstation 45%
Speed boat

System: HP Pavilion Gaming Desktop TG01-0xxx

EDIT WITH CUSTOM PC BUILDER Value: 42% - Average Total price: $675

Popular hynix BC511 HFM256GDJTNI-82A0A 256GB 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.

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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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.
Solid State Drive Rankings (Price vs Performance) December 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.
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Intel Core i5-11600K $220Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $315Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $67SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $74SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $71G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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