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Kbg40zns256g

NVMe KIOXIA 256GB

▲ 500 ▼

Release date ≈ Q4 2019.

Average Bench: 154% (139th of 1058)

Based on 6,340 user benchmarks.  Model: KBG40ZNS256G NVMe KIOXIA 256GB
Poor: 91%Average: 154% Great: 207%

Popular builds with this SSD

Outstanding average bench

The Kbg40zns256g NVMe KIOXIA 256GB averaged 53.6% 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 534MB/s
Avg. 4K-64Thread Read Speed 767MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Kbg40zns256g NVMe KIOXIA 256GB is 116%. 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 468MB/s
Avg. 4K Random Write Speed 92.7MB/s
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Average Bench

(Based on 6,340 samples)
Rank 139154%
Min Avg Max
485 Read 1,076 1,537
215 Write 928 1463
264 Mixed 913 1,299
104 SusWrite 468 586
190% 846 MB/s
Min Avg Max
19.2 4K Read 40.5 56
39.7 4K Write 92.7 144
22.5 4K Mixed 52.9 73.6
178% 62.1 MB/s
Min Avg Max
282 DQ Read 767 1,197
98.4 DQ Write 432 729
108 DQ Mixed 534 706
415% 578 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
238GB free
Firmware: 10410106 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 905 894 994 905 890 379 MB/s
232% Outstanding
Read 1,237
Write 1,479
Mixed 1,223
SusWrite 828
269% 1,192 MB/s
4K Read 57.4
4K Write 191
4K Mixed 84.2
296% 111 MB/s
DQ Read 1,062
DQ Write 766
DQ Mixed 707
584% 845 MB/s
101GB free (System drive)
Firmware: 10410105 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 1080 735 390 388 388 390 MB/s
191% Outstanding
Read 1,499
Write 1,380
Mixed 1,262
SusWrite 562
264% 1,176 MB/s
4K Read 45.9
4K Write 105
4K Mixed 60.4
203% 70.5 MB/s
DQ Read 940
DQ Write 584
DQ Mixed 648
514% 724 MB/s
109GB free (System drive)
Firmware: 10410104 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 941 1008 673 360 316 293 MB/s
167% Outstanding
Read 1,389
Write 937
Mixed 1,214
SusWrite 598
231% 1,035 MB/s
4K Read 37.6
4K Write 67.7
4K Mixed 45.1
151% 50.1 MB/s
DQ Read 788
DQ Write 465
DQ Mixed 619
463% 624 MB/s
109GB free (System drive)
Firmware: 10410104 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 954 825 397 378 345 388 MB/s
163% Outstanding
Read 1,377
Write 1,247
Mixed 1,148
SusWrite 548
242% 1,080 MB/s
4K Read 35.4
4K Write 66
4K Mixed 46.3
148% 49.2 MB/s
DQ Read 811
DQ Write 468
DQ Mixed 613
463% 631 MB/s
162GB free (System drive)
Firmware: 10410105 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 764 657 544 389 376 381 MB/s
157% Outstanding
Read 1,128
Write 997
Mixed 966
SusWrite 518
202% 902 MB/s
4K Read 40.4
4K Write 105
4K Mixed 47
177% 64.2 MB/s
DQ Read 834
DQ Write 320
DQ Mixed 472
377% 542 MB/s
170GB free (System drive)
Firmware: 10410104 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 670 728 542 379 396 394 MB/s
153% Outstanding
Read 1,063
Write 904
Mixed 969
SusWrite 518
194% 864 MB/s
4K Read 41.2
4K Write 82.9
4K Mixed 52.1
173% 58.7 MB/s
DQ Read 764
DQ Write 341
DQ Mixed 638
450% 581 MB/s
149GB free (System drive)
Firmware: 10410105 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 659 564 593 386 379 389 MB/s
129% Outstanding
Read 841
Write 742
Mixed 762
SusWrite 495
160% 710 MB/s
4K Read 20.8
4K Write 75.7
4K Mixed 37.7
120% 44.7 MB/s
DQ Read 611
DQ Write 646
DQ Mixed 704
509% 654 MB/s
6,340 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 43,081,707 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 3,903 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 9%
Tree trunk
Desktop
Desktop 68%
Battle cruiser
Workstation
Workstation 8%
Tree trunk

System: Dell Inspiron 3593

CPU
Core i5-1035G1IntelBench 66%, 28,211 samples2,076x
Core i7-1065G7IntelBench 66%, 35,341 samples1,147x
Core i3-1005G1IntelBench 59%, 10,537 samples680x
GPU
UHD G1IntelBench 6%, 32,071 samples2,311x
Iris Plus G7IntelBench 11%, 28,595 samples875x
GeForce MX230NvidiaBench 11%, 3,995 samples715x
SSD
NVMe KIOXIA 256GBKbg40zns256gBench 154%, 6,340 samples355x
RAM
HMA81GS6DJR8N-VK 1x8GBHynixBench 41%, 6,617 samples492x
HMA81GS6JJR8N-VK 1x8GBHynixBench 40%, 34,237 samples435x
HMA851S6JJR6N-VK 1x4GBHynixBench 31%, 3,861 samples307x
EDIT WITH CUSTOM PC BUILDER

Popular NVMe KIOXIA 256GB systems:

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

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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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.
  • - Reports are generated and presented on userbenchmark.com.
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Solid State Drive Rankings (Price vs Performance) May 2021 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.

 Comments

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Reaching its prime
Age: 18 months

Speed Comparisons

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vs Samsung 860 Evo 250GB
vs Samsung 850 Pro 512GB
vs HyperX Savage 240GB
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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?
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 i5-11400F $210Nvidia RTX 3060-Ti $400Crucial MX500 250GB $49
Intel Core i5-11600K $255Nvidia RTX 3070 $500Samsung 850 Evo 120GB $78
Intel Core i5-10600K $210Nvidia RTX 3080 $700Samsung 860 Evo 250GB $50
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $102SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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