TEST: SanDisk Extreme PRO 128GB USB flash drive

Here you can find a detailed performance and benchmark test of the USB flash drive Extreme PRO with 128GB (SDCZ880-128G-G46) from SanDisk.
0,29 €

Technical data
Image Extreme PRO
Manufacturer SanDisk
Model number SDCZ880-128G-G46
Storage capacity 128 GB (119 GiB)
pSLC-Cache >100 GB approx.
Read speed 420 MB/s
Write speed 380 MB/s
Connection USB Typ A
Price ca. 37 USD (= 0,29 $ / GB)
Paid link Buy on Amazon
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Compared to the top performer*
Read speed
40 %
Write speed
58 %

*) 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 192 points was achieved.

AS SSD TEST: SanDisk Extreme PRO 128GB

AS SSD Read: Write:
in megabytes per second
409,55 MB/s
380,93 MB/s
in megabytes per second
11,28 MB/s
9,34 MB/s
in megabytes per second
11,63 MB/s
44,58 MB/s
Access time
in milliseconds
0,690 ms
0,560 ms
Total score

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 October 29, 2023 shows the performance for simultaneous write and read operations. The lower the duration, the better the performance.

AS SSD TEST: SanDisk Extreme PRO 128GB
AS SSD Copy-Benchmark Transfer rate: Duration:
two large files
230,91 MB/s
4,65 s
many small files
126,84 MB/s
11,09 s
small and large files
235,44 MB/s
5,87 s

Compression Performance Test

This measures the write and read speed of the the SanDisk USB flash driveSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 420MB/s and 380MB/s respectively).

AS SSD TEST: SanDisk Extreme PRO 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 Extreme PRO 128GB
CDM Read [MB/s] Write [MB/s]

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 100 GB was written to the medium. The exact cache size could not be determined, because the test file did not exhaust the cache (brought it to the limit).At least the test file could be read with an average write speed of 406 MB/s and written with 370 MB/s.

HD Tune Endurance Test TEST: SanDisk Extreme PRO 128GB

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 Extreme PRO 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 Extreme PRO 128GB

SSD-Z Benchmark

Similar to HD Tune, a 500 MB file is written to the 128 GB SanDisk USB flash drive here. is written. The transfer data is displayed. The more constant the line, the better.

SSD-Z TEST: SanDisk Extreme PRO 128GB

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