- Jul 11, 2001
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My Sandisk Extreme 256GB microSDXC card with adapter arrived yesterday from B&H Foto.
I put the card in the included adapter and into the card reader in this 2018 Lenovo Thinkpad P1 laptop and tested with h2testw.exe Version 1.4. The results concern me. The write speed isn't terrible but I expected a much faster read speed.
The Samsung Galaxy S9 has rated performance with a capable microSD card of 100mbps read and 90mbps write. I expected the Sandisk Extreme 256GB microSDXC card, which is rated UP TO 160mbps read, 90mbps to have read speeds much better than what the test shows, with read speed only a little faster than write speed. I hope to be doing some pretty high res 4K video to the card. Is the card legit?
H2testw reported this:
Warning: Only 243950 of 243952 MByte tested.
Test finished without errors.
You can now delete the test files *.h2w or verify them again.
Writing speed: 80.7 MByte/s
Reading speed: 88.0 MByte/s
H2testw v1.4
What do you make of this?
I put the card in the included adapter and into the card reader in this 2018 Lenovo Thinkpad P1 laptop and tested with h2testw.exe Version 1.4. The results concern me. The write speed isn't terrible but I expected a much faster read speed.
The Samsung Galaxy S9 has rated performance with a capable microSD card of 100mbps read and 90mbps write. I expected the Sandisk Extreme 256GB microSDXC card, which is rated UP TO 160mbps read, 90mbps to have read speeds much better than what the test shows, with read speed only a little faster than write speed. I hope to be doing some pretty high res 4K video to the card. Is the card legit?
H2testw reported this:
Warning: Only 243950 of 243952 MByte tested.
Test finished without errors.
You can now delete the test files *.h2w or verify them again.
Writing speed: 80.7 MByte/s
Reading speed: 88.0 MByte/s
H2testw v1.4
What do you make of this?
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