Average Bench: 113% (207th of 1080)

Based on 8,196 user benchmarks.  Model: KBG30ZMV256G KIOXIA

Outstanding average bench

The Kbg30zmv256g KIOXIA 256GB averaged 13.2% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Kbg30zmv256g KIOXIA 256GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 268MB/s
Avg. 4K-64Thread Read Speed 587MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Kbg30zmv256g KIOXIA 256GB is 82.7%. This is a particularly wide range which indicates that the Kbg30zmv256g KIOXIA 256GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 283MB/s
Avg. Sequential Write Speed 350MB/s

Average Bench

(Based on 8,196 samples)
Min Avg Max
437 Read 720 947
81.4 Write 350 727
104 Mixed 384 740
100 SusWrite 283 608
96.2% 434 MB/s
Min Avg Max
22.1 4K Read 43.2 51
21.7 4K Write 70 125
17.2 4K Mixed 45.7 67.2
161% 53 MB/s
Min Avg Max
278 DQ Read 587 657
42 DQ Write 206 460
67.9 DQ Mixed 268 525
232% 354 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
155GB free
Firmware: ADHA0102
SusWrite @10s intervals: 854 859 416 243 241 240 MB/s
Read 951
Write 808
Mixed 789
SusWrite 476
170% 756 MB/s
4K Read 51.2
4K Write 131
4K Mixed 69.4
236% 83.8 MB/s
DQ Read 657
DQ Write 360
DQ Mixed 435
343% 484 MB/s
59GB free (System drive)
Firmware: ADHA0102
SusWrite @10s intervals: 148 229 135 73 90 87 MB/s
Read 955
Write 296
Mixed 502
SusWrite 127
103% 470 MB/s
4K Read 51.2
4K Write 62.4
4K Mixed 44.1
167% 52.6 MB/s
DQ Read 656
DQ Write 264
DQ Mixed 176
205% 365 MB/s
52GB free (System drive)
Firmware: ADHA0102
SusWrite @10s intervals: 300 397 268 345 319 153 MB/s
Read 773
Write 317
Mixed 380
SusWrite 297
98% 442 MB/s
4K Read 40.9
4K Write 45.6
4K Mixed 54.6
156% 47 MB/s
DQ Read 652
DQ Write 152
DQ Mixed 400
294% 401 MB/s
29GB free (System drive)
Firmware: ADHA0102
SusWrite @10s intervals: 134 147 232 293 249 211 MB/s
Read 737
Write 79.7
Mixed 346
SusWrite 211
75% 343 MB/s
4K Read 35.2
4K Write 63.5
4K Mixed 24.1
118% 40.9 MB/s
DQ Read 645
DQ Write 262
DQ Mixed 212
220% 373 MB/s
205GB free (System drive)
Firmware: ADHA0102
SusWrite @10s intervals: 157 189 184 157 146 193 MB/s
Read 771
Write 370
Mixed 427
SusWrite 171
96% 435 MB/s
4K Read 25.8
4K Write 30
4K Mixed 28
91% 27.9 MB/s
DQ Read 319
DQ Write 160
DQ Mixed 185
152% 221 MB/s
8,196 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 76,491,518 SSDs tested

Typical KIOXIA 256GB Builds (Compare 5,310 builds) See popular component choices, score breakdowns and rankings
Gaming 8%
Tree trunk
Desktop 64%
Workstation 7%
Tree trunk

System: HP Pavilion Gaming Laptop 15-dk0xxx


Popular KIOXIA 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

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) July 2024 SSD Rankings

Welcome to our 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.


1080 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

Why does UserBenchmark have a bad reputation on reddit?
Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
Why don’t PC brands endorse UserBenchmark?
Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
Why don’t youtubers promote UserBenchmark?
We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
Why does UserBenchmark have negative trustpilot reviews?
The 200+ trustpilot reviews are mostly written by virgin marketing accounts. Real users don't give a monkey's about big brands.
Why is UserBenchmark popular with users?
Instead of pursuing brands for sponsorship, we've spent 13 years publishing real-world data for users.
The Best
Intel Core i5-12600K $175Nvidia RTX 4060 $293WD Black SN850X M.2 2TB $140
Intel Core i5-13600K $240Nvidia RTX 4070 $499WD Black SN850X M.2 1TB $92
Intel Core i5-12400F $110Nvidia RTX 4060-Ti $350Crucial T700 M.2 4TB $342
Today's hottest deals
If you buy something via a price link, UserBenchmark may earn a commission
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback