TEST: SanDisk Ultra 500GB M.2 SSD

Technical data
Image
Manufacturer	SanDisk
Model number	SDSSDH3N-500G-G26
Storage capacity	500 GB (466 GiB)
pSLC-Cache	6 GB approx.
Read speed	3500 MB/s
Write speed	2300 MB/s
Interface	PCIe 3.0 x4
Connection	M.2 2280
Memory module (NAND)	TLC
DRAM Cache	no
TBW (Total Bytes Written)	300 Terabyte
Controller	SanDisk 20-82-10048-A1
Price	ca. 0 AUD (= 0,17 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

98 %

Write speed

74 %

*) 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 1980 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	3173,82 MB/s	2366,12 MB/s
4K in megabytes per second	48,83 MB/s	83,40 MB/s
4K-64Thrd in megabytes per second	684,70 MB/s	99,98 MB/s
Access time in milliseconds	0,028 ms	0,230 ms
Score	1051	420
Total score	1980

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 May 26, 2025 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	1827,04 MB/s	1,26 s
Program many small files	879,38 MB/s	8,00 s
Game small and large files	624,54 MB/s	11,06 s

Compression Performance Test

Here, the writing and reading speed of the the SanDisk SSDSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 3500MB/s and 2300MB/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	3600,83	2475,00
SEQ1M Q1T1	2336,12	2483,91
RND4K Q32T16	1123,34	681,96
RND4K Q1T1	49,16	174,72

HD Tune Pro Endurance test

A long-term test was performed here 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. 6 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 3226 MB/s and written with 417 MB/s.

HD Tune Pro Benchmark

HD Tune writes a 5 GB file to the SanDisk M.2 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.

ATTO Disk Benchmark

Here, a 256 MB file is written several times to the SanDisk M.2 SSD . The I/O block size varies (from 512 bytes to 64 megabytes). The larger the blocks, the faster they can be written and read.

SSD-Z Benchmark

Similar to HD Tune, a 500 MB file is written to the SanDisk M.2 SSD here. is written. The transfer data is displayed. The more constant the line, the better.

The benchmark test was performed on May 26, 2025.
Information about the test system can be found at the bottom of the home page.
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