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SK

256GB 256GB

▲ 500 ▼

Release date ≈ Q4 2021.

Average Bench: 92.2% (304th of 1072)

Based on 49 user benchmarks.  Model: SK 256GB
Poor: 47%Average: 92.2% Great: 156%

Popular builds with this SSD

Excellent average bench

The SK 256GB 256GB averaged just 7.8% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the SK 256GB 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 151MB/s
Avg. Sequential Read Speed 729MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the SK 256GB 256GB is 110%. This is a particularly wide range which indicates that the SK 256GB 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Mixed IO Speed 18.9MB/s
Avg. 4K-64Thread Read Speed 211MB/s
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Average Bench

(Based on 49 samples)
Rank 30492.2%
Min Avg Max
283 Read 729 1,585
180 Write 561 1,246
25.5 Mixed 444 983
79.4 SusWrite 381 1,259
118% 529 MB/s
Min Avg Max
3.3 4K Read 24.3 47.1
2.7 4K Write 64.9 173
0.2 4K Mixed 18.9 31.7
95.4% 36.1 MB/s
Min Avg Max
75.8 DQ Read 211 568
79.4 DQ Write 317 758
0.2 DQ Mixed 151 345
146% 226 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
102GB free
Firmware: V0323A0
SusWrite @10s intervals: 1241 1240 1211 534 156 156 MB/s
229% Outstanding
Read 1,666
Write 1,248
Mixed 1,052
SusWrite 756
264% 1,181 MB/s
4K Read 59.9
4K Write 290
4K Mixed 35.1
289% 128 MB/s
DQ Read 399
DQ Write 1,139
DQ Mixed 380
402% 639 MB/s
102GB free
Firmware: V0323A0
SusWrite @10s intervals: 1251 1252 1250 574 156 184 MB/s
214% Outstanding
Read 1,465
Write 1122
Mixed 920
SusWrite 778
239% 1,071 MB/s
4K Read 52.4
4K Write 266
4K Mixed 31
260% 116 MB/s
DQ Read 398
DQ Write 1,115
DQ Mixed 375
396% 629 MB/s
102GB free
Firmware: V0323A0
SusWrite @10s intervals: 1228 1238 1248 570 156 157 MB/s
212% Outstanding
Read 1,491
Write 1,134
Mixed 947
SusWrite 766
242% 1,084 MB/s
4K Read 50.3
4K Write 262
4K Mixed 28.1
251% 113 MB/s
DQ Read 396
DQ Write 1,141
DQ Mixed 376
400% 638 MB/s
171GB free (System drive)
Firmware: U0520A0L
SusWrite @10s intervals: 1158 532 166 115 131 152 MB/s
132% Outstanding
Read 1,530
Write 1,158
Mixed 943
SusWrite 376
223% 1,002 MB/s
4K Read 35.7
4K Write 63.3
4K Mixed 21.8
116% 40.3 MB/s
DQ Read 332
DQ Write 275
DQ Mixed 321
236% 309 MB/s
108GB free (System drive)
Firmware: T0918A0L
SusWrite @10s intervals: 350 245 293 216 415 451 MB/s
126% Outstanding
Read 1,407
Write 1,149
Mixed 886
SusWrite 328
210% 942 MB/s
4K Read 37.4
4K Write 66.4
4K Mixed 22.3
120% 42 MB/s
DQ Read 357
DQ Write 274
DQ Mixed 307
232% 312 MB/s
164GB free (System drive)
Firmware: V0704A0
SusWrite @10s intervals: 379 87 34 48 50 56 MB/s
78% Very good
Read 457
Write 407
Mixed 383
SusWrite 109
76% 339 MB/s
4K Read 37.1
4K Write 82.5
4K Mixed 30.1
138% 49.9 MB/s
DQ Read 199
DQ Write 322
DQ Mixed 50.3
97% 190 MB/s
49 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,784,878 SSDs tested

Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Typical 256GB 256GB Builds (Compare 204 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 7%
Tree trunk
Desktop
Desktop 53%
Yacht
Workstation
Workstation 6%
Tree trunk

System: Asus VivoBook S15 X530UN

CPU
Core i5-8250UIntelBench 53%, 234,942 samples128x
Core i7-8550UIntelBench 53%, 184,356 samples75x
Core i3-8130UIntelBench 48%, 25,471 samples1x
GPU
UHD Graphics 620 (Mobile Kaby Lake R)IntelBench 5%, 420,154 samples141x
MX150-0NvidiaBench 14%, 29,453 samples63x
SSD
256GB 256GBSKBench 92%, 49 samples1x
RAM
M471A1K43CB1-CRC 1x8GBSamsungBench 37%, 122,420 samples32x
HMA81GS6AFR8N-UH 1x8GBHynixBench 37%, 144,145 samples25x
M471A1K43CB1-CRC 2x8GBSamsungBench 70%, 62,266 samples16x
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Popular 256GB 256GB systems:

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute

Welcome to our 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 value for money upgrades.

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Gaming Desktop ProGaming

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
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Solid State Drive Rankings (Price vs Performance) May 2024 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]

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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.

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Speed Comparisons

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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

Storage Devices FAQ
What is sustained sequential write speed?
What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
What is queue depth?
Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
What is the effective SSD speed index?
How is the AS SSD write score calculated?
How is the AS SSD read score calculated?
How is the AS SSD total score calculated?
ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $254Nvidia RTX 4060 $300Crucial MX500 250GB $39
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $163Nvidia RTX 4070 $539Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $37SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $79G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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