TEST: SSK SD300 256GB USB flash drive

Here you can find a detailed performance and benchmark test of the USB flash drive SD300 with 256GB (SSK-SD300-256GB) from SSK.
Score
561
Price/GB
0,13 €


Technical data
Image SD300
Manufacturer SSK
Model number SSK-SD300-256GB
Storage capacity 256 GB (238 GiB)
pSLC-Cache 88 GB approx.
Read speed 550 MB/s
Write speed 500 MB/s
Connection USB Typ A
Price ca. 33 USD (= 0,13 $ / GB)
Paid link Buy on Amazon
Compare Product
Compared to the top performer*
Read speed
53 %
Write speed
51 %

*) 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 561 points was achieved.

AS SSD TEST: SSK SD300 256GB

AS SSD Read: Write:
Seq
in megabytes per second
535,22 MB/s
486,68 MB/s
4K
in megabytes per second
26,71 MB/s
56,78 MB/s
4K-64Thrd
in megabytes per second
104,90 MB/s
166,95 MB/s
Access time
in milliseconds
0,066 ms
0,138 ms
Score
185
272
Total score
561

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 29, 2023 shows the performance for simultaneous write and read operations. The lower the duration, the better the performance.

AS SSD TEST: SSK SD300 256GB
AS SSD Copy-Benchmark Transfer rate: Duration:
ISO
two large files
381,29 MB/s
2,82 s
Program
many small files
180,29 MB/s
7,80 s
Game
small and large files
315,70 MB/s
4,37 s

Compression Performance Test

Here, the writing and reading speed of the the SSK USB flash driveSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 550MB/s and 500MB/s respectively).

AS SSD TEST: SSK SD300 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: SSK SD300 256GB
CDM Read [MB/s] Write [MB/s]
SEQ1M
Q8T1
569,19
515,22
SEQ1M
Q1T1
547,40
493,72
RND4K
Q32T16
160,33
192,99
RND4K
Q1T1
37,78
61,42

Input/Output operations per second

CDM Read [IOPS] Write [IOPS]
SEQ1M
Q8T1
542,80
491,40
SEQ1M
Q1T1
522,00
470,90
RND4K
Q32T16
39.142,60
47.116,00
RND4K
Q1T1
9.222,70
14.994,40

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
14.710,10
16.206,80
SEQ1M
Q1T1
1.914,94
2.122,74
RND4K
Q32T16
13.046,50
10.848,80
RND4K
Q1T1
108,30
66,57

HD Tune Pro Endurance test

A long-term test was performed here to make full use of the memory capacity. You can see when a cache is full and the writing performance decreases. A test file of 100 GB was written to the medium. After approx. 88 GB, the pSLC-Cache was full and the performance was throttled.
At least the test file could be read with an average write speed of 549 MB/s and written with 336 MB/s.

HD Tune Endurance Test TEST: SSK SD300 256GB

HD Tune Pro Benchmark

HD Tune writes a 1 GB file to the 256 GB SSK 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: SSK SD300 256GB

ATTO Disk Benchmark

Here, a 256 MB file is written several times to the 256 GB SSK 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: SSK SD300 256GB

SSD-Z Benchmark

Similar to HD Tune, a 500 MB file is written to the 256 GB SSK USB flash drive here. is written. The transfer data is displayed. The more constant the line, the better.

SSD-Z TEST: SSK SD300 256GB


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