Can be that it is made on QLC 3D chips, so sustained write is horrible 30MB/s. Read speed can be up to 95MB/s.
And price is $499 (around 5x times of same size SSD!)
http://www.lexar.com/portfolio_page/professional-633x-sdhcsdxc-uhs-i-cards/
Who would buy this card with the super slow write speed? Not me.
Wasn't Lexar out of business?
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