For reference and comparison purposes only, I try to test all Secure Digital memory cards (SD / SDHC / SDXC, including Mini and Micro) that come my way using CrystalDiskMark v9.0.1 (64-bit) with default settings and collect the results, including model data and similar information, here.

Large to very large memory cards (=> 128 GB) in particular are permanently installed in devices and are therefore only listed here when the opportunity arises.

All tests are performed on my workstation, which is based on an ASUS ROG Crosshair VIII Dark Hero (AMD X570 / AM4), using the USB-A 3.2 Gen. 1 port on the front panel: Adapted by a very fast USB 3.1 Gen. 1 card reader from Kingston, the MobileLite Plus (UHS-II).

As with the USB sticks, I chose the test sizes and file systems as follows:

The results are sorted in ascending order, starting with the lowest storage capacity.

SD / SDHC / SDXC

Capacity	Manufacturer	Description	Read (MB/s)	Write (MB/s)	Screenshot	Date
128 MB	Lexar Media	SD128-100M 1204261 AO411034 MADE IN U.S.A.	7.55 7.53 4.72 4.55	4.19 4.19 0.30 0.30		2025.06.24
128 MB	Nagiwara SYS-COM	Model No. HRC-SD128M	3.56 3.56 0.51 0.34	1.47 1.47 0.17 0.16		2025.06.24
128 MB	Sigma	SD128MBM04S0437 Made in Taiwan	8.39 8.38 5.13 5.10	6.90 7.12 0.16 0.16		2025.06.24
512 MB	SanDisk	AX0620202617D Made in China	11.95 11.95 4.24 3.97	5.24 5.45 0.05 0.05		2025.06.24
1 GB	Intenso	“SD Memory Card”	15.72 15.72 6.12 5.66	4.40 4.40 0.02 0.02		2025.06.24
1 GB	Hama	“Secure Digital Card” S442TN01G E0BB 0646	10.48 10.48 4.52 2.14	2.73 2.73 0.03 0.03		2025.06.24
4 GB	Müller	SDHC	19.70 19.71 6.36 5.80	7.74 8.38 0.02 0.02		2025.06.24
8 GB	Netac	NT202006 SDHC Class 10	41.06 41.49 6.83 6.76	7.76 11.74 0.86 0.94		2025.06.24

MiniSD / MiniSDHC / MiniSDXC

Capacity	Manufacturer	Description	Read (MB/s)	Write (MB/s)	Screenshot	Date
1 GB	Memorex	G01GNMC690053	12.15 12.34 5.95 4.27	8.58 10.69 0.05 0.05		2025.06.24

MicroSD / MicroSDHC / MicroSDXC

Capacity	Manufacturer	Description	Read (MB/s)	Write (MB/s)	Screenshot	Date
2 GB	SanDisk	MicroSD Made in China	19.91 19.92 3.41 3.38	3.77 3.77 0.55 0.55		2025.06.24
2 GB	SanDisk	MicroSD Made in China	11.95 11.95 4.39 4.31	4.39 4.40 0.03 0.03		2025.06.24
2 GB	?	MMAGRO20UECA-M8 D FDDO41PA 019 Made in KOREA	15.94 16.14 1.56 1.38	5.45 6.28 0.08 0.03		2025.06.24
4 GB	Toshiba	Class 4 C04G TAIWAN	23.90 24.07 7.25 6.47	9.00 12.76 0.99 1.09		2025.06.24
8 GB	?	Class 6	6.08 6.08 2.08 2.06	3.97 4.19 0.47 0.47		2025.06.24
16 GB	SanDisk	Ultra Class 10 5325YKA852NU BL Made in Malaysia	77.66 78.21 6.60 6.28	28.68 23.02 2.26 2.15		2025.06.24
16 GB	SanDisk	Ultra U1 33810G4AX157 BL Made in China	47.12 47.48 5.77 5.32	11.30 11.95 2.59 2.10		2025.06.24
16 GB	Toshiba	Exceria U1 TAIWAN	94.97 96.46 6.89 6.64	7.75 11.52 0.54 0.53		2025.06.24
32 GB	SanDisk	Ultra Class 10 0447XX6521UL BM Made in China	97.72 98.44 8.68 8.61	23.06 24.07 2.40 2.36		2025.06.24
32 GB	SanDisk	Ultra Class 10 0447XX6521W7 BM Made in China	97.75 98.35 8.70 8.62	23.66 24.11 2.36 2.34		2025.06.24
32 GB	SanDisk	Ultra Class 10 0447XX6521US BM Made in China	97.87 98.32 8.66 8.60	22.43 23.05 2.37 2.31		2025.06.24
64 GB	SanDisk	Ultra Class 10 5406DRAXYOMX BN Made in China	97.69 98.12 7.36 6.75	12.36 23.04 1.96 1.93		2025.06.24

Der Beitrag <h5>Performance reference: </h5><h3><b>Memory cards</b></h3> erschien zuerst auf flohs blog.

For reference and comparison purposes only, I try to test all USB sticks that come my way using CrystalDiskMark v9.0.1 (64-bit) with default settings and collect the results, including model data and similar information, here.

The tests are all performed on my workstation, which is based on an ASUS ROG Crosshair VIII Dark Hero (AMD X570 / AM4), either on the USB-A 3.2 Gen. 1 or Type C Gen. 2 port on the front panel.

I chose the test sizes and file systems as follows:

The results are sorted in ascending order, starting with the lowest storage capacity.

USB 2.0

Capacity	Manufacturer	Description	USB Device Descriptor	Status LED	Read (MB/s)	Write (MB/s)	Screenshot	Date
1 GB	PEARL	PConKey ED719M176701214	USB DISK	Red	10.06 9.64 5.34 2.89	1.68 1.67 0.02 0.02		2025.06.22
2 GB	Kingston	DataTraveler DTI/2GB CH 112807 5V 04223-322.AOOLF CHINA	DataTraveler 2.0	Green	11.95 11.95 5.07 2.12	4.40 4.61 0.01 0.01		2025.06.22
4 GB	SanDisk	Cruzer Micro BH0908NXYB MADE IN CHINA SDCZ4-4096	Cruzer Micro	Orange	27.88 28.02 10.78 10.35	4.81 4.60 0.01 0.01		2025.06.22
4 GB	SanDisk	Cruzer Micro BH0902BIRB MADE IN CHINA SDCZ4-4096	Cruzer Micro	Orange	14.88 14.87 8.17 7.85	3.98 4.40 0.04 0.03		2025.06.22
4 GB	Welly	Audi TT Coupé Modellautostick NO. 92916	USB DISK 2.0	White	23.47 23.26 7.75 7.54	5.65 8.17 0.01 0.01		2025.06.22
32 GB	LYNQ	“32 GB”	USB DISK 2.0	none	27.45 27.85 10.62 10.29	8.16 7.97 0.04 0.05		2025.06.22
128 GB	SanDisk	Cruzer Blade 128GB SDCZ50-128G BP2110001789W MADE IN MALAYSIA	Ultra	none	10.27 10.27 3.29 3.22	8.38 8.38 0.61 0.59		2025.06.22
128 GB	SanDisk	Cruzer Blade 128GB SDCZ50-128G BP200257562W MADE IN MALAYSIA	Ultra	none	37.33 37.68 5.84 5.36	12.78 18.83 2.27 2.11		2025.06.22

USB 3.2 Gen. 1 (formerly known as USB 3.0)

Capacity	Manufacturer	Description	USB Device Descriptor	Status LED	Read (MB/s)	Write (MB/s)	Screenshot	Date
8 GB	Silicon Power	D33829	Silicon-Power8G	Red	42.03 42.09 16.52 12.53	10.46 20.33 0.04 0.05		2025.06.22
8 GB	Kingston	DataTraveler 100 G3 DT100G3/8GB 04570-490.A02LF 5V PR 6821013 TAIWAN	DataTraveler 3.0	none	47.12 47.13 17.36 13.85	5.24 7.11 0.04 0.04		2025.06.22
8 GB	Kingston	DataTraveler 100 G3 DT100G3/8GB 04570-490.A02LF 5V PR 6821013 TAIWAN	DataTraveler 3.0	none	47.50 47.18 17.48 13.35	8.16 8.17 0.03 0.04		2025.06.22
8 GB	Kingston	DataTraveler 100 G3 DT100G3/8GB 04570-490.A02LF 5V PR 6821013 TAIWAN	DataTraveler 3.0	none	47.36 47.17 17.53 13.92	8.59 8.59 0.04 0.04		2025.06.22
8 GB	Kingston	DataTraveler 100 G3 DT100G3/8GB 04570-490.A02LF 5V PR 6821013 TAIWAN	DataTraveler 3.0	none	47.56 47.33 16.77 11.36	8.37 8.18 0.03 0.04		2025.06.22
8 GB	Kingston	DataTraveler 100 G3 DT100G3/8GB 04570-490.A02LF 5V PR 6821013 TAIWAN	DataTraveler 3.0	none	47.49 47.19 16.73 11.32	8.18 7.75 0.03 0.04		2025.06.22
32 GB	SanDisk	Ultra Flair USB 3.0 BM180826210Z SDCZ73	Ultra USB 3.0	none	172.70 170.73 8.12 6.50	26.41 23.68 1.22 0.65		2025.06.22
32 GB	Toshiba	TransMemory MX Mase in Philippines	TransMemory-Mx	Blue	41.73 41.48 7.44 6.45	12.98 13.20 0.20 0.21		2025.06.22
64 GB	SanDisk	Extreme USB 3.0 SDCZ80-064G BN130824687B	Extreme	Blue	267.43 262.13 11.74 9.66	176.70 180.60 11.61 11.18		2025.06.22
64 GB	SanDisk	Extreme USB 3.0 SDCZ80-064G BN130824687B	Extreme	Blue	267.64 261.27 11.35 9.54	178.33 169.66 11.22 10.95		2025.06.22
128 GB	Intenso	Ultra Line 531310009	Intenso Ultra Line	none	208.89 203.27 5.34 4.41	140.20 137.03 0.06 0.00		2025.06.22
256 GB	SanDisk	Extreme PRO USB 3.1 SDCZ880-256G BQ2005256538 Made in China	USB Extreme Pro	Blue	419.24 404.30 13.07 11.26	155.48 214.12 8.15 7.22		2025.06.22
256 GB	Samsung	BAR Plus MUF-256BE3/APC	Flash Drive	none	332.69 319.85 13.55 11.87	98.85 100.36 9.18 8.41		2025.06.22

Der Beitrag <h5>Performance reference: </h5><h3><b>USB flash drives</b></h3> erschien zuerst auf flohs blog.