Average Bench: 146% (160th of 1072)

Based on 8,367 user benchmarks.  Model: SK hynix BC511 HFM256GDJTNI-82A0A

Outstanding average bench

The SK hynix BC511 HFM256GDJTNI-82A0A 256GB averaged 45.8% 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 504MB/s
Avg. 4K-64Thread Read Speed 670MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the SK hynix BC511 HFM256GDJTNI-82A0A 256GB is 103%. 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 328MB/s
Avg. 4K Random Write Speed 108MB/s

Average Bench

(Based on 8,367 samples)
Min Avg Max
339 Read 899 1,065
281 Write 789 926
298 Mixed 767 962
181 SusWrite 328 510
156% 696 MB/s
Min Avg Max
22.6 4K Read 49.4 58.2
40 4K Write 108 163
26.9 4K Mixed 57.1 77.7
205% 71.3 MB/s
Min Avg Max
327 DQ Read 670 788
181 DQ Write 543 754
204 DQ Mixed 504 676
405% 572 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
155GB free (System drive)
Firmware: HPS0
SusWrite @10s intervals: 510 314 313 299 307 314 MB/s
Read 1,045
Write 896
Mixed 945
SusWrite 343
181% 807 MB/s
4K Read 49.8
4K Write 119
4K Mixed 66.6
224% 78.6 MB/s
DQ Read 750
DQ Write 747
DQ Mixed 461
426% 653 MB/s
52GB free (System drive)
Firmware: HPS0
SusWrite @10s intervals: 244 232 226 280 259 248 MB/s
Read 811
Write 851
Mixed 819
SusWrite 248
153% 682 MB/s
4K Read 33.7
4K Write 80.2
4K Mixed 31.4
134% 48.4 MB/s
DQ Read 459
DQ Write 278
DQ Mixed 208
198% 315 MB/s
84GB free (System drive)
Firmware: HPS0
SusWrite @10s intervals: 328 181 190 175 186 179 MB/s
Read 744
Write 712
Mixed 620
SusWrite 207
128% 571 MB/s
4K Read 36.9
4K Write 70.5
4K Mixed 40.9
146% 49.4 MB/s
DQ Read 467
DQ Write 278
DQ Mixed 331
258% 359 MB/s
8,367 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,677,308 SSDs tested

Typical hynix BC511 HFM256GDJTNI-82A0A 256GB Builds (Compare 4,326 builds) See popular component choices, score breakdowns and rankings
Gaming 9%
Tree trunk
Desktop 72%
Workstation 8%
Tree trunk

System: HP Pavilion Gaming Laptop 15-dk1xxx


Popular hynix BC511 HFM256GDJTNI-82A0A 256GB systems:

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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.
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  • Fastest real world speed - Real World Speed measures performance for typical consumers.


1072 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 i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12600K $182Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12400F $133Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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