TEST: Silicon Power UD90 2TB M.2 SSD

Technical data
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Manufacturer	Silicon Power
Model number	SP02KGBP44UD9005
Storage capacity	2048 GB (1908 GiB)
pSLC-Cache	>330 GB approx.
Read speed	5000 MB/s
Write speed	4400 MB/s
Interface	PCIe 4.0 x4
Connection	M.2 2280
Memory module (NAND)	QLC
DRAM Cache	no
TBW (Total Bytes Written)	1200 Terabyte
Controller	Phison PS5021-E21T
Price	ca. 159 AUD (= 0,08 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

67 %

Write speed

63 %

*) 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 5 GB file. A total score of 6371 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	4185,46 MB/s	4149,36 MB/s
4K in megabytes per second	59,36 MB/s	217,47 MB/s
4K-64Thrd in megabytes per second	1543,55 MB/s	2678,74 MB/s
Access time in milliseconds	0,016 ms	0,088 ms
Score	2021	3311
Total score	6371

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 March 29, 2023 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	1953,18 MB/s	1,18 s
Program many small files	1222,83 MB/s	5,76 s
Game small and large files	1831,30 MB/s	3,77 s

Compression Performance Test

Here, the writing and reading speed of the the Silicon Power SSDSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 5000MB/s and 4400MB/s respectively).

CrystalDiskMark Benchmark

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	5017,72	4435,09
SEQ1M Q1T1	2949,99	4453,82
RND4K Q32T16	2850,18	2901,79
RND4K Q1T1	64,56	243,59