Technical data | |
Image | |
Manufacturer | SanDisk |
Model number | SDDDC4-256G-G46 |
Storage capacity | 256 GB (233 GiB) |
Read speed | 400 MB/s |
Write speed | 150 MB/s |
Connection | USB Typ A+C |
Price | ca. 25 USD (= 0,10 $ / GB) |
Paid link | Buy on Amazon |
The standard test was performed using a 1 GB file. A total score of 91 points was achieved.
AS SSD | Read: | Write: |
---|---|---|
Seq in megabytes per second |
264,48 MB/s |
166,18 MB/s |
4K in megabytes per second |
9,68 MB/s |
3,44 MB/s |
4K-64Thrd in megabytes per second |
9,23 MB/s |
3,40 MB/s |
Access time in milliseconds |
0,262 ms |
1,528 ms |
Score | 45 |
23 |
Total score | 91 |
A common everyday situation is simulated here. Three test folders are created:
The three folders are copied using the Windows Copy command (the cache remains enabled). The practical test of October 14, 2024 shows the performance for simultaneous write and read operations. The lower the duration, the better the performance.
AS SSD Copy-Benchmark | Transfer rate: | Duration: |
---|---|---|
ISO two large files |
125,12 MB/s |
8,58 s |
Program many small files |
36,32 MB/s |
38,73 s |
Game small and large files |
56,61 MB/s |
24,40 s |
This measures the write and read speed of the the SanDisk USB flash driveSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 400MB/s and 150MB/s respectively).
Here, two sequential and two random performance tests are performed, similar to the ones performed on the AS SSD.
CDM | Read [MB/s] | Write [MB/s] |
---|---|---|
SEQ1M Q8T1 |
277,08 |
179,88 |
SEQ1M Q1T1 |
276,74 |
177,56 |
RND4K Q32T16 |
13,85 |
3,74 |
RND4K Q1T1 |
13,81 |
3,74 |
CDM | Read [IOPS] | Write [IOPS] |
---|---|---|
SEQ1M Q8T1 |
264,20 |
171,50 |
SEQ1M Q1T1 |
263,90 |
169,30 |
RND4K Q32T16 |
3.380,90 |
911,90 |
RND4K Q1T1 |
3.371,60 |
914,10 |
CDM | Read [µs] | Write [µs] |
---|---|---|
SEQ1M Q8T1 |
30.113,10 |
46.250,60 |
SEQ1M Q1T1 |
3.787,02 |
5.843,63 |
RND4K Q32T16 |
103.397,00 |
205.079,00 |
RND4K Q1T1 |
296,42 |
1.093,23 |
This is a long term test 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 4 GB was written to the medium.
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.
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.
Similar to HD Tune, a 500 MB file is written to the 256 GB SanDisk USB flash drive here. 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.
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