TEST: SanDisk Ultra Flair 256GB USB flash driveUltra Flair

Here you can find a detailed performance and benchmark test.
The the USB flash drive Ultra Flair with 256GB (SDCZ73-256G-G46) from SanDisk was tested.


Technical data
Manufacturer SanDisk
Type SDCZ73-256G-G46
Storage capacity 256 GB (0 GiB)
Read speed 150 MB/s
Write speed 60 MB/s
DRAM Cache no
Price 24 USD (= 0,09 $ / GB)
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Score
35
Price/GB
0,09 $
Compared to the top performer*
Read speed
15 %
Write speed
3 %

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

AS SSD Benchmark 2.0

Standard performance test

The standard test was performed with a 1 GB file. Here, a total score of 35 points was achieved.

AS SSD TEST: SanDisk Ultra Flair 256GB

AS SSD Read: Write:
Seq
in megabytes per second
148,38 MB/s
24,87 MB/s
4K
in megabytes per second
4,87 MB/s
0,64 MB/s
4K-64Thrd
in megabytes per second
3,87 MB/s
0,30 MB/s
Access time
in milliseconds
0,824 ms
36,083 ms
Score
24
3
Total score
35

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 Windows Copy command (the cache remains enabled). The practical test of 24.12.2020 shows the performance for simultaneous write and read operations. The lower the duration, the better.

AS SSD TEST: SanDisk Ultra Flair 256GB
AS SSD Kopier-Benchmark Transferrate: Dauer:
ISO
two large files
26,03 MB/s
41,25 s
Program
many small files
15,10 MB/s
93,15 s
Game
small and large files
20,11 MB/s
68,66 s

Compression Performance Test

Here, the write as well as read speed (according to the manufacturer 150 MB/s and 60 MB/s) the SanDisk USB flash drive is measured depending on the compressibility of the data.

AS SSD TEST: SanDisk Ultra Flair 256GB

CrystalDiskMark 7.0 Benchmark


Similar to AS SSD, two sequential and two random performance tests are performed.

CrystalDiskMark Benchmark TEST: SanDisk Ultra Flair 256GB
CDM Read [MB/s] Write [MB/s]
SEQ1M
Q8T1
156,86
60,59
SEQ1M
Q1T1
156,94
55,91
RND4K
Q32T16
6,55
1,04
RND4K
Q1T1
5,95
0,81

Input/Output operations per second

CDM Read [IPOS] Write [IPOS]
SEQ1M
Q8T1
149,60
57,80
SEQ1M
Q1T1
149,70
53,30
RND4K
Q32T16
1.599,40
254,20
RND4K
Q1T1
1.453,40
197,00

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
53.151,50
136.440,00
SEQ1M
Q1T1
6.671,25
18.395,60
RND4K
Q32T16
248.932,00
633.050,00
RND4K
Q1T1
687,49
5.067,98

ATTO Disk Benchmark 4

Here a 256 MB file is written several times to the 256 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 usually be written and read.

ATTO Disk Benchmark TEST: SanDisk Ultra Flair 256GB

HD Tune Pro 5.75 Benchmark

HD Tune writes a 1 GB file to the 256 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.

HD Tune TEST: SanDisk Ultra Flair 256GB

HD Tune Endurance test

A long-term test was performed here to fully utilize the memory. You can see when a cache is full and the write performance decreases.

HD Tune Dauertest TEST: SanDisk Ultra Flair 256GB

SSD-Z 16 Benchmark

Similar to HD Tune, a 500 MB file is written to the 256 GB SanDisk USB flash drive here. is written. The transfer data is displayed. The more constant the line, the better.

SSD-Z TEST: SanDisk Ultra Flair 256GB

Information about the test system can be found at the bottom of the home page.