SanDisk Extreme SDXC UHS-I Memory Card vs SanDisk Ultra SDXC UHS-I Memory Card

Buy the Extreme for 4K video, burst shooting and sustained writes; buy the Ultra for full HD video and everyday photo storage where the card rarely has to keep up with a fast camera. The Extreme adds V30 and U3 ratings, which guarantee a minimum write speed the Ultra's Class 10 rating does not. Both are SanDisk UHS-I SDXC cards with strong owner ratings, but the Ultra's far larger review base reflects its role as the default budget card.

• Choose the SanDisk Extreme if you shoot 4K video, use burst mode, or move large files and want a card rated for sustained writes.
• Choose the SanDisk Ultra if you shoot full HD video and stills on a point-and-shoot or mid-range camera and want a dependable everyday card.