TEST: Transcend JetFlash 790 256GB USB flash drive

Here you can find a detailed performance and benchmark test of the USB flash drive JetFlash 790 with 256GB (TS256GJF790K) from Transcend.
Score
89
Price/GB
0,11 €


Technical data
Image JetFlash 790
Manufacturer Transcend
Model number TS256GJF790K
Storage capacity 256 GB (225 GiB)
Read speed 90 MB/s
Write speed 45 MB/s
Connection USB Typ A
Price ca. 27 USD (= 0,11 $ / GB)
Paid link Buy on Amazon
Compare Product
Compared to the top performer*
Read speed
15 %
Write speed
6 %

*) 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 89 points was achieved.

AS SSD TEST: Transcend JetFlash 790 256GB

AS SSD Read: Write:
Seq
in megabytes per second
149,62 MB/s
60,69 MB/s
4K
in megabytes per second
10,67 MB/s
13,39 MB/s
4K-64Thrd
in megabytes per second
11,15 MB/s
13,77 MB/s
Access time
in milliseconds
0,151 ms
0,616 ms
Score
37
33
Total score
89

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 17, 2021 shows the performance for simultaneous write and read operations. The lower the duration, the better the performance.

AS SSD TEST: Transcend JetFlash 790 256GB
AS SSD Copy-Benchmark Transfer rate: Duration:
ISO
two large files
61,95 MB/s
17,34 s
Program
many small files
32,10 MB/s
43,83 s
Game
small and large files
50,72 MB/s
27,23 s

Compression Performance Test

Here, the writing and reading speed of the the Transcend USB flash driveSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 90MB/s and 45MB/s respectively).

AS SSD TEST: Transcend JetFlash 790 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: Transcend JetFlash 790 256GB
CDM Read [MB/s] Write [MB/s]
SEQ1M
Q8T1
156,41
64,51
SEQ1M
Q1T1
157,27
66,00
RND4K
Q32T16
12,61
13,80
RND4K
Q1T1
11,36
13,50

Input/Output operations per second

CDM Read [IOPS] Write [IOPS]
SEQ1M
Q8T1
149,20
61,50
SEQ1M
Q1T1
150,00
62,90
RND4K
Q32T16
3.079,10
3.369,10
RND4K
Q1T1
2.774,20
3.295,90

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
53.265,40
127.284,00
SEQ1M
Q1T1
6.662,85
15.877,20
RND4K
Q32T16
113.317,00
97.627,40
RND4K
Q1T1
360,18
302,91

HD Tune Pro Benchmark

HD Tune writes a 1 GB file to the 256 GB Transcend 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: Transcend JetFlash 790 256GB

ATTO Disk Benchmark

Here, a 256 MB file is written several times to the 256 GB Transcend 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: Transcend JetFlash 790 256GB


Information about the test system can be found at the bottom of the home page.
As an Amazon Associate I earn from qualifying purchases.