Technical data | |
Image | |
Manufacturer | Silicon Power |
Model number | SP256GBSS3A55S25 |
Storage capacity | 256 GB (238 GiB) |
pSLC-Cache | 58 GB approx. |
Read speed | 460 MB/s |
Write speed | 450 MB/s |
Interface | SATA 6 Gbps |
Connection | 2.5" |
Memory module (NAND) | TLC |
TBW (Total Bytes Written) | 125 Terabyte |
Controller | Phison PS3111-S11 |
Price | ca. 35 USD (= 0,14 $ / GB) |
Paid link | Buy on Amazon |
The standard test was performed using a 1 GB file. A total score of 525 points was achieved.
AS SSD | Read: | Write: |
---|---|---|
Seq in megabytes per second |
521,13 MB/s |
389,72 MB/s |
4K in megabytes per second |
25,67 MB/s |
88,39 MB/s |
4K-64Thrd in megabytes per second |
70,49 MB/s |
168,97 MB/s |
Access time in milliseconds |
0,040 ms |
0,173 ms |
Score | 148 |
296 |
Total score | 525 |
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 June 17, 2023 shows the performance for simultaneous write and read operations. The lower the duration, the better the performance.
This measures the write and read speed of the the Silicon Power SATA SSD, depending on the compressibility of the data (according to the manufacturer, these should be 460 MB/s and 450 MB/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 |
550,81 |
407,35 |
SEQ1M Q1T1 |
538,65 |
409,66 |
RND4K Q32T16 |
136,67 |
181,19 |
RND4K Q1T1 |
41,26 |
93,48 |
CDM | Read [IOPS] | Write [IOPS] |
---|---|---|
SEQ1M Q8T1 |
525,30 |
388,50 |
SEQ1M Q1T1 |
513,70 |
390,70 |
RND4K Q32T16 |
33.367,70 |
44.236,30 |
RND4K Q1T1 |
10.073,70 |
22.823,20 |
CDM | Read [µs] | Write [µs] |
---|---|---|
SEQ1M Q8T1 |
15.202,00 |
20.496,40 |
SEQ1M Q1T1 |
1.945,85 |
2.558,50 |
RND4K Q32T16 |
15.304,30 |
11.555,30 |
RND4K Q1T1 |
99,01 |
43,68 |
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 100 GB was written to the medium.
After approx. 58 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 501 MB/s and written with 84 MB/s.
HD Tune writes a 1 GB file to the Silicon Power SATA SSD. 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 Silicon Power SATA SSD. The I/O block size varies (from 512 bytes to 64 megabytes). The larger the blocks, the faster they were written and read.
Similar to HD Tune, a 500 MB file is written to the Silicon Power SATA SSD 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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