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Nvme

KBG40ZNS128G KIOXIA 128GB

▲ 500 ▼

Release date ≈ Q4 2020.

Average Bench: 134% (173rd of 1072)

Based on 105 user benchmarks.  Model: NVMe KBG40ZNS128G NVMe KIOXIA 128GB
Poor: 68%Average: 134% Great: 190%

Popular builds with this SSD

Outstanding average bench

The Nvme KBG40ZNS128G KIOXIA 128GB averaged 34.1% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Nvme KBG40ZNS128G KIOXIA 128GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 370MB/s
Avg. 4K-64Thread Read Speed 639MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Nvme KBG40ZNS128G KIOXIA 128GB is 122%. This is a particularly wide range which indicates that the Nvme KBG40ZNS128G KIOXIA 128GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 291MB/s
Avg. Sequential Write Speed 562MB/s
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Average Bench

(Based on 105 samples)
Rank 173134%
Min Avg Max
522 Read 981 1,427
146 Write 562 795
180 Mixed 598 834
85.9 SusWrite 291 401
135% 608 MB/s
Min Avg Max
16.3 4K Read 40.7 56.8
29 4K Write 102 184
18.7 4K Mixed 49.1 72.8
178% 63.8 MB/s
Min Avg Max
248 DQ Read 639 845
82 DQ Write 356 699
95.1 DQ Mixed 370 480
309% 455 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
69GB free (System drive)
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 612 617 536 213 216 214 MB/s
157% Outstanding
Read 1,096
Write 737
Mixed 727
SusWrite 401
165% 740 MB/s
4K Read 46.5
4K Write 110
4K Mixed 59.4
205% 71.8 MB/s
DQ Read 814
DQ Write 310
DQ Mixed 479
376% 534 MB/s
67GB free (System drive)
Firmware: 10410105 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 472 560 600 251 194 171 MB/s
152% Outstanding
Read 1,181
Write 746
Mixed 760
SusWrite 374
170% 765 MB/s
4K Read 40.8
4K Write 98.6
4K Mixed 53.3
182% 64.2 MB/s
DQ Read 650
DQ Write 487
DQ Mixed 392
341% 510 MB/s
58GB free (System drive)
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 181 222 188 175 265 350 MB/s
121% Outstanding
Read 1,236
Write 726
Mixed 67.1
SusWrite 230
123% 565 MB/s
4K Read 0.4
4K Write 57.1
4K Mixed 51.7
97% 36.4 MB/s
DQ Read 630
DQ Write 459
DQ Mixed 428
352% 506 MB/s
36GB free (System drive)
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 42 24 34 27 22 41 MB/s
88% Excellent
Read 1,120
Write 31.6
Mixed 61.2
SusWrite 31.7
65% 311 MB/s
4K Read 29.2
4K Write 21.9
4K Mixed 30.2
95% 27.1 MB/s
DQ Read 467
DQ Write 54.8
DQ Mixed 75.1
102% 199 MB/s
11GB free (System drive)
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 45 49 44 48 57 37 MB/s
74.5% Very good
Read 831
Write 64.2
Mixed 106
SusWrite 46.6
56% 262 MB/s
4K Read 22.8
4K Write 39.4
4K Mixed 24.7
87% 29 MB/s
DQ Read 469
DQ Write 49
DQ Mixed 71.9
100% 197 MB/s
75GB free (System drive)
Firmware: 10410105 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 140 63 100 66 194 165 MB/s
67.9% Good
Read 586
Write 60.5
Mixed 82
SusWrite 122
46% 212 MB/s
4K Read 13.2
4K Write 41.2
4K Mixed 24.1
73% 26.2 MB/s
DQ Read 422
DQ Write 210
DQ Mixed 194
176% 275 MB/s
105 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,871,723 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 KBG40ZNS128G KIOXIA 128GB Builds (Compare 3,836 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 13%
Tree trunk
Desktop
Desktop 74%
Battleship
Workstation
Workstation 12%
Tree trunk

System: Dell Inspiron 3501

CPU
Core i5-1135G7IntelBench 69%, 36,962 samples1,546x
Core i3-1115G4IntelBench 51%, 18,815 samples745x
Core i3-1005G1IntelBench 44%, 22,960 samples608x
GPU
Iris XeIntelBench 14%, 144,774 samples1,813x
UHD G1IntelBench 5%, 68,603 samples978x
UHD GraphicsIntelBench 9%, 39,662 samples814x
SSD
KBG40ZNS128G KIOXIA 128GBNvmeBench 134%, 105 samples1x
RAM
HMAA1GS6CJR6N-XN 1x8GBUnknownBench 32%, 13,137 samples335x
M471A1G44AB0-CWE 1x8GBSamsungBench 39%, 19,438 samples266x
HMA851S6DJR6N-XN 1x4GBUnknownBench 35%, 612 samples151x
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Popular KBG40ZNS128G KIOXIA 128GB 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

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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 $293Crucial MX500 250GB $39
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $175Nvidia RTX 4070 $550Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $45SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $32Corsair Vengeance LPX DDR4 3000 C15 2x8GB $45SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $62G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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