Silicon Power Superior Pro microSDXC UHS-I Colorful U3 256GB Card Review
 

The Superior Pro microSDXC UHS-I Colorful card performs well and exceeds the rated write speed in some cases; this is good news regarding 4K recording at high bitrates, but also when using the card for program installs or other types of backups. The card can be bought with capacities of up to 512GB, so we should not worry about recording very long footage with our action cameras while on vacation or during workouts.

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