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Toshiba KBG30ZMT256G

The Toshiba KBG30ZMT256G is a small (M.2 22x42 mm) 256 GB solid state drive. It relies on the PCIe interface (NVMe protocol) for data transfer.

Notebookcheck says:

... this model is not at he same level as the top-of-the-range SSDs - Lenovo ThinkPad E590 Laptop Review | May 2019

TypeSSD
SizeM.2
Capacity256 GB
InterfaceNVMe
Announced17.12.2018

Benchmarks

AS SSD - Copy Game
min: 254.5     avg: 329.8     median: 329.8 (6%)     max: 405 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Copy Program
min: 94.3     avg: 129.9     median: 129.9 (5%)     max: 165.4 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Copy ISO
min: 448.1     avg: 490.1     median: 490.1 (4%)     max: 532 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Score Total
min: 1526     avg: 1616     median: 1616 (10%)     max: 1706 Points
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Score Write
min: 403     avg: 440.5     median: 440.5 (6%)     max: 478 Points
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Score Read
min: 749     avg: 786     median: 785.5 (13%)     max: 822 Points
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Write *
min: 0.176     avg: 0.2     median: 0.2 (0%)     max: 0.228 ms
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Read *
min: 0.057     avg: 0.1     median: 0.1 (0%)     max: 0.162 ms
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Write
min: 231.7     avg: 272.9     median: 272.9 (5%)     max: 314.1 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Read
min: 582     avg: 613     median: 612.5 (12%)     max: 643 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Write
min: 90.3     avg: 91     median: 91 (18%)     max: 91.6 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Read
min: 43.38     avg: 45.5     median: 45.5 (14%)     max: 47.61 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Write
min: 735     avg: 766     median: 766 (7%)     max: 797 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Read
min: 1241     avg: 1279     median: 1278.5 (10%)     max: 1316 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 4K QD32 Write
min: 165.6     avg: 230.3     median: 230.3 (22%)     max: 294.9 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 4K QD32 Read
min: 270.9     avg: 410     median: 410 (32%)     max: 549 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 4K Write
min: 90.8     avg: 94.5     median: 94.5 (3%)     max: 98.1 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 4K Read
min: 44.39     avg: 48.2     median: 48.1 (1%)     max: 51.9 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 512K Write
min: 501     avg: 583     median: 583 (7%)     max: 665 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 512K Read
min: 585     avg: 653     median: 653 (14%)     max: 721 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - Sequential Write
min: 598     avg: 679     median: 678.5 (6%)     max: 759 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - Sequential Read
min: 808     avg: 844     median: 844 (10%)     max: 880 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K
min: 89.1     avg: 100.2     median: 100.2 (9%)     max: 111.2 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K
min: 47.73     avg: 48.4     median: 48.4 (1%)     max: 49.01 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5 Write Seq
min: 586     avg: 669     median: 668.5 (4%)     max: 751 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5 Read Seq
min: 783     avg: 840     median: 839.5 (10%)     max: 896 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K Q32T1
min: 200.2     avg: 231.6     median: 231.6 (8%)     max: 263 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K Q32T1
min: 314.8     avg: 398.2     median: 398.2 (6%)     max: 481.5 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write Seq Q32T1
min: 784     avg: 792     median: 792 (5%)     max: 800 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read Seq Q32T1
min: 1544     avg: 1573     median: 1573 (8%)     max: 1602 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
- Range of benchmark values
red legend - Average benchmark values
* Smaller numbers mean a higher performance

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v1.33
log 01. 09:03:25

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

#1 no ids found in url (should be separated by "_") +0s ... 0s

#2 not redirecting to Ajax server +0s ... 0s

#3 did not recreate cache, as it is less than 5 days old! Created at Thu, 26 Jun 2025 20:29:08 +0200 +0.001s ... 0.001s

#4 composed specs +0.003s ... 0.004s

#5 did output specs +0s ... 0.004s

#6 getting avg benchmarks for device 3261 +0.002s ... 0.006s

#7 got single benchmarks 3261 +0.008s ... 0.014s

#8 got avg benchmarks for devices +0s ... 0.014s

#9 min, max, avg, median took s +0.99s ... 1.003s

#10 return log +0.001s ... 1.004s

Notebook reviews with Toshiba KBG30ZMT256G

Lenovo ThinkPad E590 (i7, RX 550X, SSD, FHD) Laptop Review

Lenovo ThinkPad E590 (i7, RX 550X, SSD, FHD) Laptop Review

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Intel Core i5-7Y54 | Intel HD Graphics 615 | 10.80" | 778 g

Lenovo ThinkPad E590-20NB0012GE: Intel Core i7-8565U AMD Radeon RX 550X (Laptop), 15.60", 1.9 kg
  External Review » Lenovo ThinkPad E590-20NB0012GE

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  External Review » Lenovo Yoga Book C930 YB-J912F

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