TEST: Transcend JetFlash 790 256GB USB flash drive
Here you can find a detailed performance and benchmark test.
The the USB flash drive JetFlash 790 with 256GB (TS256GJF790K) from Transcend was tested.
| Technical data | |
| Manufacturer | Transcend |
| Type | TS256GJF790K |
| Storage capacity | 256 GB (225 GiB) |
| Read speed | 90 MB/s |
| Write speed | 45 MB/s |
| Price | 20 USD (= 0,08 $ / GB) |
| Buy on Amazon | |
89
0,08 $
Compared to the top performer*
*) Test result evaluated according to AS SSD Score within the same size.
AS SSD Benchmark 2.0
Standard performance test
The standard test was performed with a 1 GB file. Here, a total score of 89 points was achieved.
| 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 Windows Copy command (the cache remains enabled). The practical test of 17.02.2021 shows the performance for simultaneous write and read operations. The lower the duration, the better.
| AS SSD Kopier-Benchmark | Transferrate: | Dauer: |
|---|---|---|
| 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 write as well as read speed (according to the manufacturer 90 MB/s and 45 MB/s) the Transcend USB flash drive is measured depending on the compressibility of the data.
CrystalDiskMark 7.0 Benchmark
Similar to AS SSD, two sequential and two random performance tests are performed.
| 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 [IPOS] | Write [IPOS] |
|---|---|---|
| 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 |
ATTO Disk Benchmark 4
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 usually be written and read.
HD Tune Pro 5.75 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.
SSD-Z 16 Benchmark
Similar to HD Tune, a 500 MB file is written to the 256 GB Transcend USB flash drive here. is written. The transfer data is displayed. The more constant the line, the better.
Information about the test system can be found at the bottom of the home page.