Average Bench: 160% (152nd of 1080)

Based on 2,731 user benchmarks.  Model: NVMe KBG40ZNS256G NVMe KIOXIA 256GB

Outstanding average bench

The Nvme KBG40ZNS256G KIOXIA 256GB averaged 59.6% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Nvme KBG40ZNS256G KIOXIA 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 517MB/s
Avg. 4K-64Thread Read Speed 826MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Nvme KBG40ZNS256G KIOXIA 256GB is 143%. This is a particularly wide range which indicates that the Nvme KBG40ZNS256G KIOXIA 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 422MB/s
Avg. 4K-64Thread Write Speed 396MB/s
ADVERTISEMENT

Average Bench

(Based on 2,731 samples)
Min Avg Max
492 Read 1,088 1,551
97.9 Write 853 1,469
139 Mixed 882 1,312
68.5 SusWrite 422 574
181% 811 MB/s
Min Avg Max
18.1 4K Read 47.1 58
35.6 4K Write 113 196
24.8 4K Mixed 57.9 79.8
205% 72.7 MB/s
Min Avg Max
328 DQ Read 826 1,371
80.9 DQ Write 396 802
104 DQ Mixed 517 702
408% 580 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
51GB free (System drive)
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 22 22 21 26 25 25 MB/s
Read 4,752
Write 38.2
Mixed 82.6
SusWrite 23.3
254% 1,224 MB/s
4K Read 690
4K Write 2.9
4K Mixed 5.1
1,054% 233 MB/s
56GB free (System drive)
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 434 448 267 292 253 227 MB/s
Read 1,406
Write 388
Mixed 1,165
SusWrite 320
181% 820 MB/s
4K Read 46.9
4K Write 106
4K Mixed 62.7
208% 72 MB/s
DQ Read 1,087
DQ Write 428
DQ Mixed 260
324% 592 MB/s
238GB free
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 580 506 399 441 352 384 MB/s
Read 1,098
Write 889
Mixed 620
SusWrite 444
170% 763 MB/s
4K Read 50.4
4K Write 109
4K Mixed 67
220% 75.4 MB/s
DQ Read 896
DQ Write 297
DQ Mixed 585
435% 593 MB/s
178GB free (System drive)
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 359 554 362 290 234 195 MB/s
Read 1,030
Write 938
Mixed 943
SusWrite 332
182% 811 MB/s
4K Read 51.3
4K Write 125
4K Mixed 65.7
228% 80.7 MB/s
DQ Read 946
DQ Write 360
DQ Mixed 683
497% 663 MB/s
70GB free (System drive)
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 432 511 341 393 353 251 MB/s
Read 601
Write 149
Mixed 527
SusWrite 380
92% 414 MB/s
4K Read 29.4
4K Write 85.1
4K Mixed 49.1
152% 54.5 MB/s
DQ Read 580
DQ Write 229
DQ Mixed 239
221% 350 MB/s
105GB free (System drive)
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 411 431 450 674 445 398 MB/s
Read 853
Write 289
Mixed 611
SusWrite 468
124% 555 MB/s
4K Read 33.6
4K Write 59.3
4K Mixed 29
119% 40.6 MB/s
DQ Read 299
DQ Write 243
DQ Mixed 477
301% 340 MB/s
145GB free (System drive)
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 494 507 479 465 386 381 MB/s
Read 616
Write 561
Mixed 954
SusWrite 452
146% 646 MB/s
4K Read 37.7
4K Write 63.8
4K Mixed 43.6
147% 48.4 MB/s
DQ Read 377
DQ Write 132
DQ Mixed 208
166% 239 MB/s
71GB free (System drive)
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 525 461 513 444 385 379 MB/s
Read 670
Write 488
Mixed 156
SusWrite 451
98% 441 MB/s
4K Read 14.2
4K Write 52.1
4K Mixed 48.8
112% 38.4 MB/s
DQ Read 363
DQ Write 281
DQ Mixed 257
210% 301 MB/s
2,731 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 76,226,646 SSDs tested

Typical KBG40ZNS256G KIOXIA 256GB Builds (Compare 3,732 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 15%
Tree trunk
Desktop
Desktop 76%
Battleship
Workstation
Workstation 13%
Tree trunk

System: Dell Latitude 5420

EDIT WITH CUSTOM PC BUILDER

Popular KBG40ZNS256G 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) June 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]

ADVERTISEMENT

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.

 Comments

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
CPUGPUSSD
Intel Core i5-12600K $163Nvidia RTX 4060 $290WD Black SN850X M.2 2TB $160
Intel Core i5-13600K $249Nvidia RTX 4060-Ti $385WD Black SN850X M.2 1TB $79
Intel Core i5-12400F $110Nvidia RTX 4070 $520Crucial T700 M.2 4TB $383
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