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Toshiba KBG40ZNS512G NVMe vs Kioxia BG5 KBG50ZNS512G

Toshiba KBG40ZNS512G NVMe

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Kioxia BG5 KBG50ZNS512G

KBG50ZNS512G

The Kioxia BG5 KBG50ZNS512G (former Toshiba, SED KBG5AZNS512G) is a mid range PCIe4 x4 NVMe M.2 2230 SSD. It uses BiCS FLASH TLC memory and is specified at 3,500 MB/s sequential read and 1,900 MB/s sequential write.

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Toshiba KBG40ZNS512G NVMeKioxia BG5 KBG50ZNS512G
TypeSSDSSD
SizeM.2M.2 2230
Capacity512 GB512 GB
InterfaceNVMeNVMe
Announced20.12.2019 19.08.2022
LinkKioxia BG5 KBG50ZNS512G

Benchmarks

Performance Rating - DiskSpd - KBG40ZNS512G
17.8 pt (20%)
Seagate ST1000LM014 Solid State Hybrid Drive
0.717 -96%
...
KDI OM3PDP3-AD NVMe KDI 256GB
17.4 -2%
Samsung PM991 MZALQ256HAJD
17.5 -2%
Kioxia THGJFJT2T85BAT01
17.5 -2%
Ayaneo CyberThunder-2TB
17.6 -1%
Samsung PM991a MZVLQ256HBJD
17.6 -1%
BiWin CE480Y2D100-512G
17.7 -1%
Samsung PM991 MZVLQ1T0HALB
17.7 -1%
Samsung PM991 MZVLQ512HALU
17.8 0%
Lexar 512GB NM6A1 LNM6A1X512G-HNNG
17.8 0%
Toshiba KBG40ZNS512G NVMe
17.8
SK Hynix HFS001TEJ9X164N
17.9 1%
Samsung PM991 MZVLQ256HAJD
18 1%
Intel SSDPEMKF512G8 NVMe SSD
18 1%
Foresee GSYAPGC-512G
18.1 2%
Netac G938E
18.1 2%
Samsung BM9C1 1024GB
18.1 2%
ADATA XPG Gammix S11L 1024GB
18.2 2%
Toshiba BG4 KBG40ZPZ512G
18.2 2%
Crucial P1 SSD CT1000P1SSD8
18.2 2%
...
Kingston Fury Renegade G5 4TB
87.8 393%
0%
100%
Restrict / Search: Model: Max. age: years
Performance Rating - DiskSpd - KBG50ZNS512G
20.3 pt (23%)
Seagate ST1000LM014 Solid State Hybrid Drive
0.717 -96%
...
WDC PC SN530 SDBPMPZ-512G
19.9 -2%
Mushkin Helix-L 1TB MKNSSDHL1TB-08
19.9 -2%
SSSTC CL4-8D512
20 -1%
Toshiba Kioxia XG6 KXG60PNV512G
20 -1%
Intel Optane Memory H10 with Solid State Storage 32GB + 512GB HBRPEKNX0202A(L/H)
20.1 -1%
WDC PC SN730 SDBPNTY-256G
20.1 -1%
2x Intel SSD 660p 1TB SSDPEKNW010T8 (RAID 0)
20.2 0%
Micron 2400 MTFDKBK512QFM
20.2 0%
Micron 2550 1TB MTFDKCD1T0TGE
20.2 0%
Kioxia BG5 KBG50ZNS512G
20.3
Samsung SSD PM981a MZVLB256HBHQ
20.4 0%
Samsung PM981a MZVLB2T0HALB
20.4 0%
256 GB UFS 4.0 Flash
20.5 1%
WDC PC SN730 SDBQNTY-1T00
20.5 1%
Toshiba XG6 KXG6AZNV256G
20.5 1%
Rayson RS512GSSD510 512 GB PCIe 4.0 NVMe
20.5 1%
SK Hynix BC711 HFM512GD3HX015N
20.5 1%
2x Micron 2200S 512 GB (RAID 0)
20.6 1%
Phison E12S-512GB-Phison-SSD-BICS4
20.6 1%
...
Kingston Fury Renegade G5 4TB
87.8 333%
0%
100%
Restrict / Search: Model: Max. age: years
AS SSD - Copy Game
min: 142.72     avg: 715     median: 827 (14%)     max: 1101 MB/s
min: 1174.45     avg: 1452     median: 1482.5 (25%)     max: 1667.48 MB/s
AS SSD - Copy Program
min: 201.16     avg: 388.1     median: 364.8 (14%)     max: 645 MB/s
min: 379.46     avg: 582     median: 534 (20%)     max: 879.88 MB/s
AS SSD - Copy ISO
min: 339.09     avg: 1785     median: 1037 (4%)     max: 11031 MB/s
min: 1634.1     avg: 1937     median: 1992.4 (7%)     max: 2129.4 MB/s
AS SSD - Score Total
min: 1685     avg: 2461     median: 2389.5 (15%)     max: 3316 Points
min: 1381     avg: 2114     median: 2229 (14%)     max: 2529 Points
AS SSD - Score Write
min: 335     avg: 644     median: 568 (8%)     max: 1001 Points
min: 573     avg: 796     median: 762 (11%)     max: 1226 Points
AS SSD - Score Read
min: 823     avg: 1232     median: 1224.5 (20%)     max: 1558 Points
min: 530     avg: 897     median: 933 (15%)     max: 1190 Points
AS SSD - Access Time Write *
min: 0.168     avg: 0.4     median: 0.4 (1%)     max: 0.718 ms
min: 0.035     avg: 0.1     median: 0.1 (0%)     max: 0.179 ms
AS SSD - Access Time Read *
min: 0.058     avg: 0.1     median: 0.1 (0%)     max: 0.169 ms
min: 0.078     avg: 0.1     median: 0.1 (0%)     max: 0.163 ms
AS SSD - 4K-64 Write
min: 132.25     avg: 452     median: 367.9 (6%)     max: 750 MB/s
min: 333.93     avg: 517     median: 401.5 (7%)     max: 996.39 MB/s
AS SSD - 4K-64 Read
min: 662.17     avg: 997     median: 1007.5 (20%)     max: 1295 MB/s
min: 274.83     avg: 601     median: 618.5 (12%)     max: 855.48 MB/s
AS SSD - 4K Write
min: 70.44     avg: 110.9     median: 107.7 (21%)     max: 141.68 MB/s
min: 65.2     avg: 133.2     median: 111.9 (22%)     max: 197.81 MB/s
AS SSD - 4K Read
min: 33.31     avg: 45.8     median: 48.1 (15%)     max: 54.57 MB/s
min: 28.72     avg: 48.1     median: 45.4 (14%)     max: 65.01 MB/s
AS SSD - Sequential Write
min: 548.03     avg: 810     median: 785 (7%)     max: 1124 MB/s
min: 1273.97     avg: 1451     median: 1451 (13%)     max: 1683.46 MB/s
AS SSD - Sequential Read
min: 1276     avg: 1871     median: 1953.8 (15%)     max: 2086 MB/s
min: 2269.2     avg: 2481     median: 2448.8 (19%)     max: 2693.29 MB/s
CrystalDiskMark 3.0 - 4K QD32 Write
min: 392     avg: 415.1     median: 415.1 (39%)     max: 438.2 MB/s
CrystalDiskMark 3.0 - 4K QD32 Read
min: 393     avg: 478     median: 478 (37%)     max: 563 MB/s
CrystalDiskMark 3.0 - 4K Write
min: 118.8     avg: 127.4     median: 127.4 (4%)     max: 136 MB/s
CrystalDiskMark 3.0 - 4K Read
min: 45.28     avg: 48.1     median: 48.1 (1%)     max: 51 MB/s
CrystalDiskMark 3.0 - 512K Write
min: 1120     avg: 1200     median: 1200 (13%)     max: 1280 MB/s
CrystalDiskMark 3.0 - 512K Read
min: 1202     avg: 1314     median: 1314 (28%)     max: 1426 MB/s
CrystalDiskMark 3.0 - Sequential Write
min: 1206     avg: 1239     median: 1238.5 (12%)     max: 1271 MB/s
CrystalDiskMark 3.0 - Sequential Read
min: 1657     avg: 1688     median: 1687.5 (19%)     max: 1718 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K
min: 89.3     avg: 126.4     median: 121.2 (11%)     max: 207.3 MB/s
min: 54.4     avg: 106.8     median: 107.4 (10%)     max: 157.8 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K
min: 40.25     avg: 50     median: 51.7 (1%)     max: 61.3 MB/s
min: 29.04     avg: 43     median: 44.9 (1%)     max: 53.2 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5 Write Seq
min: 314.5     avg: 1207     median: 1279 (7%)     max: 1552 MB/s
min: 1317     avg: 1771     median: 1912.5 (10%)     max: 1941 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5 Read Seq
min: 1236     avg: 1567     median: 1648 (18%)     max: 1858 MB/s
min: 1458     avg: 1977     median: 2056.5 (22%)     max: 2337 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K Q32T1
min: 162.5     avg: 347.3     median: 336.4 (7%)     max: 510 MB/s
min: 240.3     avg: 302.3     median: 300.6 (6%)     max: 367.8 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K Q32T1
min: 331.4     avg: 424.9     median: 394.2 (6%)     max: 640 MB/s
min: 92.63     avg: 317.8     median: 367.2 (5%)     max: 444.3 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write Seq Q32T1
min: 259     avg: 1224     median: 1255.5 (8%)     max: 1521 MB/s
min: 2356     avg: 2621     median: 2686.5 (18%)     max: 2754 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read Seq Q32T1
min: 1815     avg: 2278     median: 2321.5 (12%)     max: 2375 MB/s
min: 2601     avg: 2851     median: 2897 (16%)     max: 3008 MB/s
CrystalDiskMark 5.2 / 6 - CDM 6 Write 4K Q8T8
min: 288.1     avg: 315     median: 315 (6%)     max: 341.8 MB/s
CrystalDiskMark 5.2 / 6 - CDM 6 Read 4K Q8T8
min: 658     avg: 854     median: 853.5 (13%)     max: 1049 MB/s
PCMark 8 - PCMark 8 Storage v2
4931 Points (96%)
DiskSpd - DiskSpd 4k_q1t1_write
min: 94.5     avg: 134.9     median: 139.3 (32%)     max: 213 MB/s
min: 49.4     avg: 118.2     median: 122.4 (28%)     max: 162.6 MB/s
DiskSpd - DiskSpd 4k_q1t1_read
min: 31.9     avg: 50     median: 52.8 (15%)     max: 61.9 MB/s
min: 40.3     avg: 53.5     median: 55.7 (16%)     max: 67.2 MB/s
DiskSpd - DiskSpd 4k_q32t16_write
min: 306     avg: 442.9     median: 406 (6%)     max: 794 MB/s
min: 308     avg: 372     median: 387 (6%)     max: 461 MB/s
DiskSpd - DiskSpd 4k_q32t16_read
min: 439     avg: 766     median: 658 (8%)     max: 1381 MB/s
min: 469     avg: 735     median: 676 (8%)     max: 1190 MB/s
DiskSpd - DiskSpd seq_write
min: 706     avg: 1315     median: 1361.5 (13%)     max: 1528 MB/s
min: 1362     avg: 1962     median: 2020 (19%)     max: 2191 MB/s
DiskSpd - DiskSpd seq_read
min: 787     avg: 1600     median: 1675 (18%)     max: 1903 MB/s
min: 1615     avg: 2090     median: 2166 (23%)     max: 2617 MB/s
DiskSpd - DiskSpd seq_q8t1_write
min: 561     avg: 1357     median: 1455.5 (10%)     max: 1535 MB/s
min: 1964     avg: 2613     median: 2718 (19%)     max: 2770 MB/s
DiskSpd - DiskSpd seq_q8t1_read
min: 2045     avg: 2320     median: 2343 (15%)     max: 2412 MB/s
min: 1665     avg: 2581     median: 2569 (16%)     max: 3313 MB/s
DiskSpd - DiskSpd Loop seq_q8t1_read
min: 763     avg: 1403     median: 1367 (8%)     max: 2298 MB/s
min: 1580     avg: 2368     median: 2187 (13%)     max: 3064 MB/s
- Range of benchmark values for this graphics card
red legend - Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

Average Benchmarks

Toshiba KBG40ZNS512G NVMe → 100% n=31

Kioxia BG5 KBG50ZNS512G → 140% n=31

Average of the median scores above. 1 ... This benchmark is not used for the average calculation

Amazon Logo
  • $99.99
    KIOXIA Internal SSD, 512GB PCIe Gen 3 x 4 NVMe Solid State Drive, M.2 2230, Model KBG40ZNS512G, OEM Package
  • $139.99
    Kioxia SSD 512GB M.2 2230 30mm NVMe PCIe Gen3 x4 KBG40ZNS512G BG4 Solid State Drive for Surface Pro Steam Deck Dell HP Lenovo Ultrabook Tablet
  • $49.99
    Toshiba(Kioxia) 256GB PCIe NVMe 2230 SSD (KBG40ZNS256G) (OEM), 30mm
  • $159.99
    Ediloca 1TB M2 NVME SSD with Heatsink - PCIe Gen4.0 NVMe M.2 2280 3D NAND TLC, 5000MB/s Read, Internal Solid State Drive for PS5/PC, Dynamic SLC Cache, PS5 Storage Expansion, 5-Year Warranty(EN760)
  • $29.99
    KIOXIA (Toshiba 128GB M.2 2230 PCIe NVMe KBG40ZNS128G, OEM Package

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v1.35
log 03. 22:58:49

#0 ran 0s before starting gpusingle class +0s ... 0s

#1 checking url part for id 3433 +0s ... 0s

#2 checking url part for id 3874 +0s ... 0s

#3 redirected to Ajax server, took 1780520328s time from redirect:0 +0s ... 0s

#4 did not recreate cache, as it is less than 5 days old! Created at Mon, 01 Jun 2026 22:56:29 +0200 +0s ... 0s

#5 composed specs +0.002s ... 0.002s

#6 did output specs +0s ... 0.002s

#7 getting avg benchmarks for device 3433 +0.005s ... 0.007s

#8 got single benchmarks 3433 +0.011s ... 0.018s

#9 getting avg benchmarks for device 3874 +0.003s ... 0.021s

#10 got single benchmarks 3874 +0.006s ... 0.027s

#11 got avg benchmarks for devices +0s ... 0.027s

#12 min, max, avg, median took s +0.082s ... 0.109s

#13 return log +0.933s ... 1.042s

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Benchmarks / Tech > HDD/SSD Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2023-07- 1)