Average Bench: 63.8% (744th of 1058)

Based on 16,420 user benchmarks.  Model: SK hynix SC311 SATA 128GB

Above average average bench

The SK hynix SC311 SATA 128GB averaged 36.1% 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. 4K-64Thread Mixed IO Speed 129MB/s
Avg. 4K Random Mixed IO Speed 29MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the SK hynix SC311 SATA 128GB is 33.1%. This is a relatively narrow range which indicates that the SK hynix SC311 SATA 128GB performs reasonably consistently under varying real world conditions.


Avg. Sustained Write Speed 110MB/s
Avg. Sequential Write Speed 257MB/s

Average Bench

(Based on 16,420 samples)
Min Avg Max
330 Read 433 494
129 Write 257 301
163 Mixed 293 333
68.2 SusWrite 110 133
60.7% 273 MB/s
Min Avg Max
10.5 4K Read 23.1 31.7
30.7 4K Write 60.8 91.4
13.2 4K Mixed 29 41.9
104% 37.6 MB/s
Min Avg Max
148 DQ Read 189 205
81 DQ Write 152 255
49.7 DQ Mixed 129 168
108% 156 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
35GB free (System drive)
Firmware: 70000P10
SusWrite @10s intervals: 127 147 128 128 131 137 MB/s
Read 462
Write 276
Mixed 326
SusWrite 133
66% 299 MB/s
4K Read 24.7
4K Write 60.4
4K Mixed 33.6
112% 39.6 MB/s
DQ Read 202
DQ Write 179
DQ Mixed 143
120% 175 MB/s
119GB free
Firmware: 70000P10
SusWrite @10s intervals: 55 63 58 82 79 86 MB/s
Read 306
Write 204
Mixed 242
SusWrite 70.4
46% 206 MB/s
4K Read 22.7
4K Write 59.9
4K Mixed 38.1
115% 40.2 MB/s
DQ Read 22
DQ Write 94.1
DQ Mixed 33.3
33% 49.8 MB/s
16,420 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 49,559,814 SSDs tested.

Typical hynix SC311 SATA 128GB Builds (Compare 5,274 builds) See popular component choices, score breakdowns and rankings.
Gaming 39%
Jet ski
Desktop 82%
Aircraft carrier
Workstation 34%
Sail boat

System: Dell G7 7588


Popular hynix SC311 SATA 128GB 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.
  • - 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.
Intel Core i5-12600K $300Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11600K $220Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i5-11400F $196Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $200
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 $76SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $71G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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