TEST
YOUR SSD
ADD TO PC
BUILD

Kbg40zns512g

NVMe KIOXIA 512GB

▲ 501 ▼

Release date ≈ Q4 2019.

Average Bench: 148% (158th of 1072)

Based on 15,775 user benchmarks.  Model: KBG40ZNS512G NVMe KIOXIA 512GB
Poor: 81%Average: 148% Great: 216%

Popular builds with this SSD

Outstanding average bench

The Kbg40zns512g NVMe KIOXIA 512GB averaged 48.3% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Kbg40zns512g NVMe KIOXIA 512GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 515MB/s
Avg. 4K-64Thread Read Speed 826MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Kbg40zns512g NVMe KIOXIA 512GB is 135%. This is a particularly wide range which indicates that the Kbg40zns512g NVMe KIOXIA 512GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 427MB/s
Avg. 4K Random Write Speed 101MB/s
ADVERTISEMENT

Average Bench

(Based on 15,775 samples)
Rank 158148%
Min Avg Max
199 Read 967 1,465
118 Write 835 1,420
203 Mixed 819 1,262
75.8 SusWrite 427 577
171% 762 MB/s
Min Avg Max
12.6 4K Read 40.1 57
34.2 4K Write 101 190
24.4 4K Mixed 53.2 79.8
182% 64.6 MB/s
Min Avg Max
328 DQ Read 826 1,310
73.4 DQ Write 405 819
104 DQ Mixed 515 689
409% 582 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
262GB free (System drive)
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 615 590 527 181 145 143 MB/s
137% Outstanding
Read 1,120
Write 961
Mixed 956
SusWrite 367
190% 851 MB/s
4K Read 43.5
4K Write 81.6
4K Mixed 43.4
165% 56.2 MB/s
DQ Read 630
DQ Write 240
DQ Mixed 280
248% 383 MB/s
195GB free (System drive)
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 346 138 554 178 296 476 MB/s
133% Outstanding
Read 1,272
Write 1,076
Mixed 1,076
SusWrite 332
210% 939 MB/s
4K Read 0.3
4K Write 42.7
4K Mixed 56.7
96% 33.2 MB/s
DQ Read 881
DQ Write 383
DQ Mixed 258
290% 507 MB/s
305GB free (System drive)
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 593 744 543 357 362 367 MB/s
130% Outstanding
Read 764
Write 769
Mixed 694
SusWrite 494
153% 680 MB/s
4K Read 35.9
4K Write 68.3
4K Mixed 44.8
148% 49.7 MB/s
DQ Read 575
DQ Write 447
DQ Mixed 512
383% 511 MB/s
301GB free (System drive)
Firmware: 10410105 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 586 603 558 348 340 351 MB/s
126% Outstanding
Read 1,020
Write 624
Mixed 880
SusWrite 464
167% 747 MB/s
4K Read 33.5
4K Write 71.1
4K Mixed 38
137% 47.5 MB/s
DQ Read 389
DQ Write 258
DQ Mixed 480
316% 376 MB/s
22GB free (System drive)
Firmware: 10410106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 190 177 97 42 16 43 MB/s
83.4% Excellent
Read 450
Write 282
Mixed 430
SusWrite 94.2
70% 314 MB/s
4K Read 27.7
4K Write 73.6
4K Mixed 33.7
124% 45 MB/s
DQ Read 729
DQ Write 238
DQ Mixed 217
230% 395 MB/s
15,775 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,731,247 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 512GB Builds (Compare 10,176 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 124%
UFO
Desktop
Desktop 99%
Nuclear submarine
Workstation
Workstation 123%
UFO

System: Dell XPS 8940

CPU
Core i7-11700Intel  $216Bench 98%, 20,430 samples4,453x
Core i7-10700Intel  $233Bench 93%, 71,010 samples1,829x
Core i5-11400Intel  $136Bench 94%, 24,459 samples1,153x
GPU
RTX 3060-TiNvidia  $340Bench 128%, 442,467 samples2,418x
UHD Graphics 750IntelBench 7%, 15,464 samples1,090x
RTX 3060Nvidia  $279Bench 100%, 447,556 samples992x
SSD
NVMe KIOXIA 512GBKbg40zns512gBench 148%, 15,775 samples1x
RAM
HMAA1GU6CJR6N-XN 2x8GBUnknownBench 65%, 1,864 samples653x
M378A2G43AB3-CWE 2x16GBUnknownBench 79%, 764 samples539x
M378A1G44AB0-CWE 2x8GBUnknownBench 63%, 886 samples396x
EDIT WITH CUSTOM PC BUILDER Value: 96% - Outstanding Total price: $556

Popular NVMe KIOXIA 512GB 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) April 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]

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

Added n/a ago.
Your
opinion?
▲Like ▼Dislike
Ready to retire
Age: 4 years

Speed Comparisons

vs Crucial MX500 250GB
vs Samsung 850 Evo 120GB
vs Samsung 860 Evo 250GB
vs Samsung 870 Evo 250GB
vs Samsung 850 Pro 512GB
vs Samsung 850 Evo 250GB
vs HyperX Savage 240GB
vs Crucial MX300 275GB
vs Samsung 850 Evo 1TB

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 $269Nvidia RTX 4060 $295Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $178Nvidia RTX 4070 $539Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $45SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
If you make a purchase via one of these links, our site may earn a commission
Today's hottest
Amazon Ebay
deals
CPU GPU SSD HDD USB RAM MBD
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback