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Kbg40zns256g

NVMe KIOXIA 256GB

▲ 500 ▼

Release date ≈ Q4 2019.

Average Bench: 147% (147th of 1058)

Based on 13,415 user benchmarks.  Model: KBG40ZNS256G NVMe KIOXIA 256GB
Poor: 75%Average: 147% Great: 219%

Popular builds with this SSD

Outstanding average bench

The Kbg40zns256g NVMe KIOXIA 256GB averaged 46.8% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Kbg40zns256g NVMe KIOXIA 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 492MB/s
Avg. 4K-64Thread Read Speed 800MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Kbg40zns256g NVMe KIOXIA 256GB is 144%. This is a particularly wide range which indicates that the Kbg40zns256g NVMe KIOXIA 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 415MB/s
Avg. 4K Random Write Speed 94.8MB/s
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Average Bench

(Based on 13,415 samples)
Rank 147147%
Min Avg Max
192 Read 935 1,506
82.7 Write 756 1,431
158 Mixed 800 1,278
66.8 SusWrite 415 578
163% 726 MB/s
Min Avg Max
15.1 4K Read 44.6 58.1
24.9 4K Write 94.8 174
19.5 4K Mixed 53.3 80
186% 64.2 MB/s
Min Avg Max
249 DQ Read 800 1,420
72.2 DQ Write 408 808
99.2 DQ Mixed 492 710
395% 567 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
195GB free (System drive)
Firmware: 10410105 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 766 738 509 401 399 386 MB/s
220% Outstanding
Read 1,102
Write 879
Mixed 939
SusWrite 533
193% 863 MB/s
4K Read 61.5
4K Write 197
4K Mixed 86
308% 115 MB/s
DQ Read 1324
DQ Write 856
DQ Mixed 704
629% 961 MB/s
208GB free (System drive)
Firmware: 10410105 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 998 982 776 390 365 396 MB/s
201% Outstanding
Read 1,127
Write 1,138
Mixed 951
SusWrite 651
217% 967 MB/s
4K Read 55.3
4K Write 144
4K Mixed 75.8
257% 91.9 MB/s
DQ Read 929
DQ Write 717
DQ Mixed 668
542% 771 MB/s
203GB free (System drive)
Firmware: 10410105 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 995 848 403 390 402 400 MB/s
189% Outstanding
Read 929
Write 906
Mixed 933
SusWrite 573
188% 835 MB/s
4K Read 55.6
4K Write 144
4K Mixed 75.1
257% 91.5 MB/s
DQ Read 922
DQ Write 754
DQ Mixed 700
562% 792 MB/s
203GB free (System drive)
Firmware: 10410105 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 995 848 403 390 402 400 MB/s
189% Outstanding
Read 929
Write 906
Mixed 933
SusWrite 573
188% 835 MB/s
4K Read 55.6
4K Write 144
4K Mixed 75.1
257% 91.5 MB/s
DQ Read 922
DQ Write 754
DQ Mixed 700
562% 792 MB/s
201GB free (System drive)
Firmware: 10410106 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 667 787 504 351 313 245 MB/s
182% Outstanding
Read 1,284
Write 1,171
Mixed 1,154
SusWrite 478
229% 1,022 MB/s
4K Read 49.1
4K Write 115
4K Mixed 63.3
216% 75.7 MB/s
DQ Read 883
DQ Write 651
DQ Mixed 660
522% 731 MB/s
147GB free (System drive)
Firmware: 10410104 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 570 351 261 187 359 323 MB/s
143% Outstanding
Read 1,323
Write 1,149
Mixed 1,068
SusWrite 342
217% 971 MB/s
4K Read 42.5
4K Write 68.5
4K Mixed 50.6
166% 53.9 MB/s
DQ Read 430
DQ Write 354
DQ Mixed 352
275% 379 MB/s
130GB free (System drive)
Firmware: 10410105 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 382 384 370 368 346 313 MB/s
111% Outstanding
Read 476
Write 404
Mixed 431
SusWrite 361
94% 418 MB/s
4K Read 37.5
4K Write 87.5
4K Mixed 47.8
164% 57.6 MB/s
DQ Read 632
DQ Write 221
DQ Mixed 436
320% 430 MB/s
202GB free (System drive)
Firmware: 10410106 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 452 489 506 496 615 480 MB/s
110% Outstanding
Read 800
Write 471
Mixed 738
SusWrite 506
141% 629 MB/s
4K Read 38
4K Write 24.6
4K Mixed 22.2
99% 28.3 MB/s
DQ Read 732
DQ Write 57
DQ Mixed 98.6
147% 296 MB/s
13,415 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 57,592,030 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 NVMe KIOXIA 256GB Builds (Compare 5,993 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 8%
Tree trunk
Desktop
Desktop 63%
Destroyer
Workstation
Workstation 7%
Tree trunk

System: Dell Inspiron 3593

CPU
Core i5-1035G1IntelBench 62%, 54,372 samples3,101x
Core i7-1065G7IntelBench 62%, 56,239 samples1,700x
Core i3-1005G1IntelBench 57%, 26,083 samples1,190x
GPU
UHD G1IntelBench 5%, 64,862 samples3,612x
Iris Plus G7IntelBench 11%, 45,526 samples1,299x
GeForce MX230NvidiaBench 10%, 6,432 samples1,079x
SSD
NVMe KIOXIA 256GBKbg40zns256gBench 147%, 13,415 samples519x
RAM
HMA81GS6DJR8N-VK 1x8GBHynixBench 41%, 9,486 samples668x
HMA81GS6JJR8N-VK 1x8GBHynixBench 40%, 48,644 samples602x
HMA851S6JJR6N-VK 1x4GBHynixBench 31%, 5,577 samples412x
EDIT WITH CUSTOM PC BUILDER

Popular NVMe KIOXIA 256GB systems:

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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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  • - 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.
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  • - Reports are generated and presented on userbenchmark.com.
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Solid State Drive Rankings (Price vs Performance) August 2022 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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1058 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?
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ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-12600K $270Nvidia RTX 3060-Ti $446Crucial MX500 250GB $42
Intel Core i5-12400F $160Nvidia RTX 3050 $292Samsung 850 Evo 120GB $106
Intel Core i7-12700K $378Nvidia RTX 3070 $536Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $60SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $62SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $71G.SKILL Trident Z DDR4 3200 C14 4x16GB $453SanDisk Extreme 16GB $17
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