TEST: SanDisk Ultra Flair 64GB USB flash drive

Technical data
Image
Manufacturer	SanDisk
Model number	SDCZ73-064G-G46
Storage capacity	64 GB (57 GiB)
Read speed	150 MB/s
Write speed	60 MB/s
Connection	USB Typ A
Price	ca. 8 USD (= 0,13 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

40 %

Write speed

22 %

*) 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 1 GB file. A total score of 52 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	159,33 MB/s	55,24 MB/s
4K in megabytes per second	7,37 MB/s	1,32 MB/s
4K-64Thrd in megabytes per second	6,71 MB/s	1,42 MB/s
Access time in milliseconds	0,408 ms	8,279 ms
Score	30	8
Total score	52

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 30, 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	16,25 MB/s	66,09 s
Program many small files	8,50 MB/s	165,53 s
Game small and large files	15,67 MB/s	88,11 s

Compression Performance Test

Here, the writing and reading speed of the the SanDisk USB flash driveSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 150MB/s and 60MB/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	167,59	37,02
SEQ1M Q1T1	167,70	37,46
RND4K Q32T16	10,61	2,06
RND4K Q1T1	10,59	1,64

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 4 GB was written to the medium.

HD Tune Pro Benchmark

HD Tune writes a 1 GB file to the 64 GB SanDisk USB flash drive. 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 64 GB SanDisk USB flash drive . 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 64 GB SanDisk USB flash drive here. is written. The transfer data is displayed. The more constant the line, the better.

The benchmark test was performed on March 30, 2023.
Information about the test system can be found at the bottom of the home page.
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