TEST: Samsung 870 QVO 2TB SATA SSD

Technical data
Image
Manufacturer	Samsung
Model number	MZ-77Q2T0BW
Storage capacity	2048 GB (1863 GiB)
Read speed	560 MB/s
Write speed	530 MB/s
Interface	SATA 6 Gbps
Connection	2.5"
Memory module (NAND)	QLC
TBW (Total Bytes Written)	720 Terabyte
Controller	Samsung MKX (Metis S4LR059)
Price	ca. 190 USD (= 0,09 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

99 %

Write speed

91 %

*) 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 1 GB file. A total score of 792 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	516,23 MB/s	455,31 MB/s
4K in megabytes per second	38,02 MB/s	90,52 MB/s
4K-64Thrd in megabytes per second	215,27 MB/s	182,45 MB/s
Access time in milliseconds	0,040 ms	0,036 ms
Score	305	319
Total score	792

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 19, 2021 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	892,94 MB/s	1,20 s
Program many small files	1192,67 MB/s	1,18 s
Game small and large files	1899,65 MB/s	0,73 s

Compression Performance Test

This measures the write and read speed of the Samsung SATA SSD, depending on the compressibility of the data (according to the manufacturer, these should be 560 MB/s and 530 MB/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	548,52	481,23
SEQ1M Q1T1	534,11	470,95
RND4K Q32T16	226,85	192,45
RND4K Q1T1	38,63	98,60

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.

HD Tune Pro Benchmark

HD Tune writes a 1 GB file to the Samsung 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.

ATTO Disk Benchmark

Here, a 256 MB file is written several times to the Samsung 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.

SSD-Z Benchmark

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

The benchmark test was performed on November 19, 2021.
Information about the test system can be found at the bottom of the home page.
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