TEST: SK hynix Gold P31 2TB M.2 SSD

Technical data
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Manufacturer	SK hynix
Model number	SHGP31-2000GM-2
Storage capacity	2048 GB (1863 GiB)
pSLC-Cache	172 GB approx.
Read speed	3500 MB/s
Write speed	3200 MB/s
Interface	PCIe 4.0 x4
Connection	M.2 2280
Memory module (NAND)	TLC
DRAM Cache	✓ yes
TBW (Total Bytes Written)	1200 Terabyte
Controller	Hynix ACNT038
Price	ca. 148 USD (= 0,07 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

48 %

Write speed

47 %

*) Test result evaluated according to AS SSD Score within the same size.

AS SSD Benchmark

Standard performance test

The standard test was performed using a 5 GB file. A total score of 6564 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	2997,00 MB/s	3127,85 MB/s
4K in megabytes per second	60,34 MB/s	177,91 MB/s
4K-64Thrd in megabytes per second	1839,54 MB/s	2737,07 MB/s
Access time in milliseconds	0,019 ms	0,106 ms
Score	2200	3228
Total score	6564

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 November 07, 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	2118,90 MB/s	1,08 s
Program many small files	1229,93 MB/s	5,72 s
Game small and large files	2064,33 MB/s	3,35 s

Compression Performance Test

This measures the write and read speed of the the SK hynix SSDSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 3500MB/s and 3200MB/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	3601,63	3354,97
SEQ1M Q1T1	1862,24	3178,06
RND4K Q32T16	1964,01	3237,37
RND4K Q1T1	54,24	194,68

HD Tune Pro Endurance test

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 300 GB was written to the medium. After approx. 172 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 3259 MB/s and written with 2042 MB/s.

HD Tune Pro Benchmark

HD Tune writes a 5 GB file to the SK hynix 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 SK hynix 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 SK hynix M.2 SSD here. The transfer data is displayed. The more constant the line, the better.

The benchmark test was performed on November 07, 2023.
Information about the test system can be found at the bottom of the home page.
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