TEST: SanDisk Ultra Dual Drive m3.0 256GB USB flash drive

Here you can find a detailed performance and benchmark test of the USB flash drive Ultra Dual Drive m3.0 with 256GB (SDDD3-256G-G46) from SanDisk.
Score
36
Price/GB
0,08 €


Technical data
Image Ultra Dual Drive m3.0
Manufacturer SanDisk
Model number SDDD3-256G-G46
Storage capacity 256 GB (233 GiB)
Read speed 150 MB/s
Write speed 30 MB/s
Connection USB Typ A+C
Price ca. 21 USD (= 0,08 $ / GB)
Paid link Buy on Amazon
Compare Product
Compared to the top performer*
Read speed
15 %
Write speed
7 %

*) Test result evaluated according to AS SSD Score within the same size.

AS SSD Benchmark

Standard performance test

The standard test was performed with a 1 GB file. A total score of 36 points was achieved.

AS SSD TEST: SanDisk Ultra Dual Drive m3.0 256GB

AS SSD Read: Write:
Seq
in megabytes per second
150,44 MB/s
62,87 MB/s
4K
in megabytes per second
2,50 MB/s
1,01 MB/s
4K-64Thrd
in megabytes per second
2,41 MB/s
1,46 MB/s
Access time
in milliseconds
1,596 ms
18,638 ms
Score
20
9
Total score
36

Copy Performance Test

A common everyday situation is simulated here. Three test folders are created:

  • ISO (folder with two large files)
  • Program (folder with many small files)
  • Game (folder with small and large files)

The three folders are copied using the Windows Copy command (the cache remains enabled). The practical test of April 15, 2021 shows the performance for simultaneous write and read operations. The lower the duration, the better the performance.

AS SSD TEST: SanDisk Ultra Dual Drive m3.0 256GB
AS SSD Copy-Benchmark Transfer rate: Duration:
ISO
two large files
46,92 MB/s
22,89 s
Program
many small files
14,72 MB/s
95,59 s
Game
small and large files
21,95 MB/s
62,91 s

Compression Performance Test

Here, the writing and reading speed of the the SanDisk USB flash driveSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 150MB/s and 30MB/s respectively).

AS SSD TEST: SanDisk Ultra Dual Drive m3.0 256GB

CrystalDiskMark Benchmark

Here, two sequential and two random performance tests are performed, similar to the ones performed on the AS SSD.

CrystalDiskMark Benchmark TEST: SanDisk Ultra Dual Drive m3.0 256GB
CDM Read [MB/s] Write [MB/s]
SEQ1M
Q8T1
160,59
70,44
SEQ1M
Q1T1
160,66
65,05
RND4K
Q32T16
3,40
1,11
RND4K
Q1T1
3,36
1,07

Input/Output operations per second

CDM Read [IOPS] Write [IOPS]
SEQ1M
Q8T1
153,10
67,20
SEQ1M
Q1T1
153,20
62,00
RND4K
Q32T16
831,10
271,50
RND4K
Q1T1
820,80
262,20

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
51.870,40
117.691,00
SEQ1M
Q1T1
6.522,06
16.082,50
RND4K
Q32T16
183.995,00
315.775,00
RND4K
Q1T1
1.217,52
3.811,24

HD Tune Pro Benchmark

HD Tune writes a 1 GB file to the 256 GB SanDisk USB flash drive. The transfer data of the read speed is displayed graphically. The minimum, maximum and average values are also determined. The determined access time and burst rate are also displayed.

HD Tune TEST: SanDisk Ultra Dual Drive m3.0 256GB

ATTO Disk Benchmark

Here, a 256 MB file is written several times to the 256 GB SanDisk USB flash drive . The I/O block size varies (from 512 bytes to 64 megabytes). The larger the blocks, the faster they can be written and read.

ATTO Disk Benchmark TEST: SanDisk Ultra Dual Drive m3.0 256GB


Information about the test system can be found at the bottom of the home page.
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