TEST: SanDisk Ultra Curve 128GB USB flash drive

Here you can find a detailed performance and benchmark test of the USB flash drive Ultra Curve with 128GB (SDCZ550-128G-G46) from SanDisk.
Score
35
Price/GB
0,11 €


Technical data
Image Ultra Curve
Manufacturer SanDisk
Model number SDCZ550-128G-G46
Storage capacity 128 GB (115 GiB)
Read speed 100 MB/s
Write speed 50 MB/s
Connection USB Typ A
Price ca. 14 USD (= 0,11 $ / GB)
Paid link Buy on Amazon
Compare Product
Compared to the top performer*
Read speed
10 %
Write speed
6 %

*) 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 35 points was achieved.

AS SSD TEST: SanDisk Ultra Curve 128GB

AS SSD Read: Write:
Seq
in megabytes per second
105,30 MB/s
50,33 MB/s
4K
in megabytes per second
4,64 MB/s
0,73 MB/s
4K-64Thrd
in megabytes per second
4,17 MB/s
0,72 MB/s
Access time
in milliseconds
0,626 ms
14,037 ms
Score
19
6
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 the Windows Copy command (the cache remains enabled). The practical test of November 26, 2023 shows the performance for simultaneous write and read operations. The lower the duration, the better the performance.

AS SSD TEST: SanDisk Ultra Curve 128GB
AS SSD Copy-Benchmark Transfer rate: Duration:
ISO
two large files
47,42 MB/s
22,65 s
Program
many small files
9,63 MB/s
146,16 s
Game
small and large files
19,99 MB/s
69,08 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 100MB/s and 50MB/s respectively).

AS SSD TEST: SanDisk Ultra Curve 128GB

CrystalDiskMark Benchmark

Here, two sequential and two random performance tests are performed, similar to the ones performed on the AS SSD.

CrystalDiskMark Benchmark TEST: SanDisk Ultra Curve 128GB
CDM Read [MB/s] Write [MB/s]
SEQ1M
Q8T1
110,91
43,92
SEQ1M
Q1T1
114,41
48,98
RND4K
Q32T16
6,64
1,34
RND4K
Q1T1
6,38
1,18

Input/Output operations per second

CDM Read [IOPS] Write [IOPS]
SEQ1M
Q8T1
105,80
41,90
SEQ1M
Q1T1
109,10
46,70
RND4K
Q32T16
1.621,80
326,20
RND4K
Q1T1
1.557,40
287,10

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
74.973,40
188.011,00
SEQ1M
Q1T1
9.162,52
21.350,20
RND4K
Q32T16
159.474,00
290.157,00
RND4K
Q1T1
641,80
3.476,45

HD Tune Pro Benchmark

HD Tune writes a 1 GB file to the 128 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 Curve 128GB

ATTO Disk Benchmark

Here, a 256 MB file is written several times to the 128 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.

ATTO Disk Benchmark TEST: SanDisk Ultra Curve 128GB


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