TEST
YOUR SSD
ADD TO PC
BUILD

Kbg40zpz512g

NVMe KIOXIA 512GB

▲ 501 ▼

Release date ≈ Q4 2019.

Average Bench: 132% (175th of 1072)

Based on 765 user benchmarks.  Model: KBG40ZPZ512G NVMe KIOXIA 512GB
Poor: 80%Average: 132% Great: 199%

Popular builds with this SSD

Outstanding average bench

The Kbg40zpz512g NVMe KIOXIA 512GB averaged 32.1% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Kbg40zpz512g NVMe KIOXIA 512GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 509MB/s
Avg. 4K-64Thread Read Speed 752MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Kbg40zpz512g NVMe KIOXIA 512GB is 119%. This is a particularly wide range which indicates that the Kbg40zpz512g NVMe KIOXIA 512GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 439MB/s
Avg. 4K Random Write Speed 71.5MB/s
ADVERTISEMENT

Average Bench

(Based on 765 samples)
Rank 175132%
Min Avg Max
572 Read 912 1,258
229 Write 767 1,246
336 Mixed 796 1,152
227 SusWrite 439 542
163% 728 MB/s
Min Avg Max
14 4K Read 33.4 51.3
19.2 4K Write 71.5 158
15 4K Mixed 43.2 70.9
144% 49.4 MB/s
Min Avg Max
284 DQ Read 752 1,237
99.7 DQ Write 339 761
117 DQ Mixed 509 690
387% 533 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
270GB free (System drive)
Firmware: 10400105 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 576 764 561 368 301 366 MB/s
167% Outstanding
Read 1,104
Write 682
Mixed 568
SusWrite 489
158% 711 MB/s
4K Read 0.4
4K Write 122
4K Mixed 70.1
155% 64.1 MB/s
DQ Read 1,136
DQ Write 693
DQ Mixed 660
560% 830 MB/s
167GB free (System drive)
Firmware: 10400106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 488 455 363 705 750 552 MB/s
146% Outstanding
Read 1,091
Write 108
Mixed 925
SusWrite 552
148% 669 MB/s
4K Read 39.9
4K Write 89
4K Mixed 51.5
174% 60.1 MB/s
DQ Read 538
DQ Write 136
DQ Mixed 334
246% 336 MB/s
322GB free (System drive)
Firmware: 10400106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 939 832 365 363 364 368 MB/s
140% Outstanding
Read 1,251
Write 1,303
Mixed 1,184
SusWrite 538
240% 1,069 MB/s
4K Read 34.4
4K Write 58.5
4K Mixed 42.1
137% 45 MB/s
DQ Read 365
DQ Write 272
DQ Mixed 317
237% 318 MB/s
89GB free (System drive)
Firmware: 10400106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 464 509 587 413 325 201 MB/s
134% Outstanding
Read 1,309
Write 721
Mixed 1,103
SusWrite 416
198% 887 MB/s
4K Read 0.4
4K Write 70
4K Mixed 52.8
105% 41.1 MB/s
DQ Read 610
DQ Write 272
DQ Mixed 502
356% 462 MB/s
78GB free (System drive)
Firmware: 10400105 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 428 340 335 258 201 165 MB/s
112% Outstanding
Read 830
Write 788
Mixed 568
SusWrite 288
138% 618 MB/s
4K Read 2.4
4K Write 83
4K Mixed 49.1
110% 44.8 MB/s
DQ Read 800
DQ Write 303
DQ Mixed 616
439% 573 MB/s
127GB free (System drive)
Firmware: 10400106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 394 375 480 247 259 317 MB/s
112% Outstanding
Read 973
Write 715
Mixed 733
SusWrite 345
154% 692 MB/s
4K Read 0.3
4K Write 40.2
4K Mixed 49.3
85% 29.9 MB/s
DQ Read 720
DQ Write 268
DQ Mixed 576
404% 521 MB/s
350GB free (System drive)
Firmware: 10400106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 471 420 380 321 382 351 MB/s
98.1% Outstanding
Read 869
Write 571
Mixed 337
SusWrite 388
120% 541 MB/s
4K Read 21.3
4K Write 37.8
4K Mixed 32.7
94% 30.6 MB/s
DQ Read 302
DQ Write 130
DQ Mixed 215
160% 216 MB/s
136GB free (System drive)
Firmware: 10400106 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 174 146 259 186 233 291 MB/s
58.6% Above average
Read 564
Write 345
Mixed 444
SusWrite 215
87% 392 MB/s
4K Read 14.1
4K Write 24.7
4K Mixed 16.9
56% 18.6 MB/s
DQ Read 134
DQ Write 110
DQ Mixed 134
97% 126 MB/s
105GB free (System drive)
Firmware: 10400105 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 312 309 167 302 302 258 MB/s
50.5% Above average
Read 42.7
Write 396
Mixed 44.7
SusWrite 275
44% 190 MB/s
4K Read 23.2
4K Write 26.8
4K Mixed 22.1
78% 24 MB/s
DQ Read 262
DQ Write 97.8
DQ Mixed 167
127% 176 MB/s
765 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,667,686 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 565 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 15%
Surfboard
Desktop
Desktop 61%
Destroyer
Workstation
Workstation 15%
Tree trunk

System: Dell XPS 13 7390 2-in-1

CPU
Core i7-1065G7IntelBench 53%, 58,314 samples536x
Core i5-1035G1IntelBench 51%, 53,170 samples25x
Core i3-1005G1IntelBench 44%, 22,960 samples4x
GPU
Iris Plus G7IntelBench 9%, 52,498 samples513x
UHD G1IntelBench 5%, 68,603 samples29x
RTX 2080Nvidia  $407Bench 124%, 316,424 samples4x
SSD
NVMe KIOXIA 512GBKbg40zpz512gBench 132%, 765 samples198x
RAM
K4UBE3D4AA-MGCL 2x8GBSamsungBench 104%, 7,828 samples160x
H9HCNNNCPMALHR-NEE 2x8GBHynixBench 102%, 3,263 samples110x
H9HCNNNFAMALTR-NEE 2x16GBHynixBench 104%, 356 samples109x
EDIT WITH CUSTOM PC BUILDER

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 $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $182Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair 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