Average Bench: 190% (42nd of 929)

Based on 504 user benchmarks.  Model: PC401 NVMe SK hynix 512GB

Outstanding average bench

The Pc401 NVMe SK hynix 512GB averaged 89.5% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Pc401 NVMe SK hynix 512GB near the top of the comparison list.


Avg. Sequential Read Speed 1,871MB/s
Avg. Sequential Mixed IO Speed 1,061MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Pc401 NVMe SK hynix 512GB is 98.5%. This is a particularly wide range which indicates that the Pc401 NVMe SK hynix 512GB performs inconsistently under varying real world conditions.


Avg. 4K-64Thread Read Speed 178MB/s
Avg. 4K-64Thread Mixed IO Speed 71.5MB/s

Average Bench

(Based on 504 samples)
Min Avg Max
1,249 Read 1,871 2,339
354 Write 1,029 1,239
459 Mixed 1,061 1,453
291% 1,320 MB/s
Min Avg Max
21.8 4K Read 34.9 45.6
49.4 4K Write 91.4 131
18.1 4K Mixed 32.3 55.4
143% 52.9 MB/s
Min Avg Max
29.9 DQ Read 178 399
79.4 DQ Write 227 377
18.2 DQ Mixed 71.5 117
90.4% 159 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
374GB free
Firmware: 80003E00 Max speed: PCIe 5,000 MB/s
Read 2,268
Write 1,167
Mixed 1,431
357% 1,622 MB/s
4K Read 36.4
4K Write 82.8
4K Mixed 26.1
132% 48.4 MB/s
DQ Read 42.4
DQ Write 188
DQ Mixed 30.8
48% 87.1 MB/s
374GB free
Firmware: 80003E00 Max speed: PCIe 5,000 MB/s
Read 2,181
Write 1,105
Mixed 1,441
347% 1,576 MB/s
4K Read 32.2
4K Write 88.6
4K Mixed 26.8
130% 49.2 MB/s
DQ Read 30
DQ Write 95.9
DQ Mixed 21.4
28% 49.1 MB/s
206GB free
Firmware: 80003E00 Max speed: PCIe 5,000 MB/s
Read 2,114
Write 695
Mixed 850
265% 1,220 MB/s
4K Read 40.7
4K Write 121
4K Mixed 31.8
166% 64.5 MB/s
DQ Read 377
DQ Write 314
DQ Mixed 93.5
139% 262 MB/s
406GB free
Firmware: 80003E00 Max speed: PCIe 5,000 MB/s
Read 1,163
Write 1,142
Mixed 628
217% 978 MB/s
4K Read 28.7
4K Write 60
4K Mixed 33.2
118% 40.6 MB/s
DQ Read 126
DQ Write 186
DQ Mixed 69.6
77% 127 MB/s
504 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 7,163,897 SSDs tested.

Typical NVMe SK hynix 512GB Builds (Compare 9,079 builds) See popular component choices, score breakdowns and rankings.
Gaming 17%
Desktop 80%
Workstation 52%

System: Dell XPS 15 9560 - $1,100


Popular NVMe SK hynix 512GB 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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
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  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
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Solid State Drive Rankings (Price vs Performance) June 2018 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 - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.


929 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.
AMD Ryzen 5 1600 $175Nvidia GTX 1070 $447Samsung 850 Evo 250GB $104
Intel Core i7-8700K $317Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $123
Intel Core i5-8600K $239AMD RX 480 $280Samsung 850 Pro 256GB $116
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $911SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
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