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KSM256 256GB

▲ 500 ▼

Release date ≈ Q3 2020.

Average Bench: 70.1% (666th of 1072)

Based on 10 user benchmarks.  Model: KSM256
Poor: 37%Average: 70.1% Great: 82%

Popular builds with this SSD

Good average bench

The KSM256 256GB averaged 29.8% 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.

Strengths

Avg. 4K-64Thread Write Speed 268MB/s
Avg. 4K Random Write Speed 63.2MB/s

Average consistency

The range of scores (95th - 5th percentile) for the KSM256 256GB is 44.6%. This is a relatively wide range which indicates that the KSM256 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K-64Thread Mixed IO Speed 28.8MB/s
Avg. 4K-64Thread Read Speed 118MB/s
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Average Bench

(Based on 10 samples)
Rank 66670.1%
Min Avg Max
377 Read 451 515
348 Write 389 433
55.7 Mixed 305 365
118 SusWrite 304 403
81.2% 362 MB/s
Min Avg Max
16.2 4K Read 19.6 25.6
23.3 4K Write 63.2 113
1.2 4K Mixed 16.5 22.5
84.3% 33.1 MB/s
Min Avg Max
109 DQ Read 118 132
46.5 DQ Write 268 333
19.6 DQ Mixed 28.8 33.5
68.9% 138 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
238GB free
Firmware: S0628A0
SusWrite @10s intervals: 170 415 438 445 446 446 MB/s
92% Outstanding
Read 515
Write 433
Mixed 365
SusWrite 393
96% 427 MB/s
4K Read 25.6
4K Write 113
4K Mixed 22.5
127% 53.6 MB/s
DQ Read 119
DQ Write 331
DQ Mixed 30.3
79% 160 MB/s
200GB free (System drive)
Firmware: S0628A0
SusWrite @10s intervals: 323 312 345 345 387 183 MB/s
81.9% Excellent
Read 487
Write 415
Mixed 316
SusWrite 316
86% 384 MB/s
4K Read 23.2
4K Write 94.3
4K Mixed 20.9
112% 46.1 MB/s
DQ Read 122
DQ Write 332
DQ Mixed 28.5
79% 161 MB/s
228GB free
Firmware: S0618B
SusWrite @10s intervals: 403 401 403 404 404 404 MB/s
76.7% Very good
Read 465
Write 391
Mixed 344
SusWrite 403
90% 401 MB/s
4K Read 19.7
4K Write 52.1
4K Mixed 17.3
80% 29.7 MB/s
DQ Read 109
DQ Write 328
DQ Mixed 30.7
78% 156 MB/s
108GB free (System drive)
Firmware: S0618B
SusWrite @10s intervals: 311 133 71 68 28 97 MB/s
53.2% Above average
Read 455
Write 375
Mixed 338
SusWrite 118
72% 322 MB/s
4K Read 17.4
4K Write 43.1
4K Mixed 15
68% 25.2 MB/s
DQ Read 113
DQ Write 214
DQ Mixed 28.8
60% 119 MB/s
68GB free
Firmware: 0204
SusWrite @10s intervals: 334 358 168 69 52 52 MB/s
52.8% Above average
Read 389
Write 349
Mixed 294
SusWrite 172
67% 301 MB/s
4K Read 19.8
4K Write 38.2
4K Mixed 15.9
71% 24.6 MB/s
DQ Read 112
DQ Write 134
DQ Mixed 28
48% 91.4 MB/s
68GB free
Firmware: 0204
SusWrite @10s intervals: 352 169 83 67 52 65 MB/s
37.2% Below average
Read 377
Write 348
Mixed 55.7
SusWrite 131
50% 228 MB/s
4K Read 16.2
4K Write 23.3
4K Mixed 1.2
38% 13.6 MB/s
DQ Read 125
DQ Write 46.5
DQ Mixed 19.6
32% 63.7 MB/s

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,801,547 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 KSM256 256GB Builds (Compare 7 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 7%
Tree trunk
Desktop
Desktop 59%
Gunboat
Workstation
Workstation 6%
Tree trunk

System: Lenovo 42824YG

CPU
Core i7-2860QMIntel  $469Bench 62%, 4,317 samples7x
GPU
Quadro 2000MNvidiaBench 5%, 3,227 samples7x
SSD
KSM256 256GBBench 70%, 10 samples1x
RAM
KHX1600C9S3L/4G 029E CM3X4GSD1066 KHX1600C9S3L/4G 029E CM3X4GSD1066 16GBKingstonBench 37%, 4 samples4x
Team-Elite-1333 4x8GBTeamBench 48%, 68 samples1x
RMT3020EC58E9F1333 2x4GBRamaxelBench 44%, 946 samples1x
EDIT WITH CUSTOM PC BUILDER Value: 53% - Above average Total price: $469

Popular KSM256 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.

UserBenchmark of the month

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
  • - 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) 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

vs Crucial MX500 250GB
vs Samsung 850 Evo 120GB
vs Samsung 860 Evo 250GB
vs Samsung 870 Evo 250GB
vs Samsung 850 Pro 512GB
vs Samsung 850 Evo 250GB
vs HyperX Savage 240GB
vs Crucial MX300 275GB
vs Samsung 850 Evo 1TB

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) $31Corsair Vengeance LPX DDR4 3000 C15 2x8GB $37SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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