TEST: ADATA UC300 256GB USB flash drive

Here you can find a detailed performance and benchmark test of the USB flash drive UC300 with 256GB (ACHO-UC300-256G-RBK/GN) from ADATA.
Score
40
Price/GB
0,13 €


Technical data
Image UC300
Manufacturer ADATA
Model number ACHO-UC300-256G-RBK/GN
Storage capacity 256 GB (0 GiB)
pSLC-Cache 231 GB approx.
Read speed not specified
Write speed not specified
Connection USB Typ C
Price ca. 34 AUD (= 0,13 $ / GB)
Paid link Buy on Amazon
Compare Product
Compared to the top performer*
Read speed
10 %
Write speed
2 %

*) 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 40 points was achieved.

AS SSD TEST: ADATA UC300 256GB

AS SSD Read: Write:
Seq
in megabytes per second
111,21 MB/s
8,30 MB/s
4K
in megabytes per second
6,64 MB/s
1,08 MB/s
4K-64Thrd
in megabytes per second
7,85 MB/s
1,06 MB/s
Access time
in milliseconds
0,825 ms
4,919 ms
Score
26
3
Total score
40

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 February 13, 2024 shows the performance for simultaneous write and read operations. The lower the duration, the better the performance.

AS SSD TEST: ADATA UC300 256GB
AS SSD Copy-Benchmark Transfer rate: Duration:
ISO
two large files
47,04 MB/s
22,83 s
Program
many small files
13,89 MB/s
101,30 s
Game
small and large files
29,91 MB/s
46,17 s

Compression Performance Test

Here, the writing and reading speed of the the ADATA USB flash driveSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 0MB/s and 0MB/s respectively).

AS SSD TEST: ADATA UC300 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: ADATA UC300 256GB
CDM Read [MB/s] Write [MB/s]
SEQ1M
Q8T1
113,66
25,36
SEQ1M
Q1T1
116,45
88,26
RND4K
Q32T16
11,66
1,73
RND4K
Q1T1
7,12
1,48

Input/Output operations per second

CDM Read [IOPS] Write [IOPS]
SEQ1M
Q8T1
108,40
24,20
SEQ1M
Q1T1
111,10
84,20
RND4K
Q32T16
2.845,70
423,10
RND4K
Q1T1
1.738,50
361,60

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
73.203,30
112.271,00
SEQ1M
Q1T1
8.988,12
11.859,00
RND4K
Q32T16
118.012,00
310.462,00
RND4K
Q1T1
575,00
2.760,20