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The SanDisk Extreme microSDXC is a UHS-I card rated U3, V30 and A2, aimed at action cameras, drones, phones and handheld consoles. In this 512GB capacity it sits in the range where SanDisk quotes up to 245MB/s read and up to 170MB/s write, which is quick for a UHS-I card but still short of UHS-II or CFexpress media. The A2 rating and V30 minimum write speed make it a sensible pick for 4K recording and app-heavy Android devices. It is a mainstream enthusiast card rather than a professional one, and its value depends on whether your device can use the extra speed.
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Owners of SanDisk Extreme cards generally report reliable performance in action cameras, drones and handhelds, with read speeds close to the quoted figures on a good reader. Complaints tend to focus on write speed falling short of expectations and on cards that failed or arrived slow.
This is a 512GB SanDisk Extreme microSDXC UHS-I memory card. It is rated U3, V30 and A2. It is made for recording 5K point-of-view video and 4K UHD aerial video, and for adding storage to Android devices, laptops and handheld gaming consoles.
Read speeds reach up to 245MB/s and write speeds up to 170MB/s. The card also supports continuous burst mode and slow-motion Full HD. The A2 rating helps apps load quickly.
The card is temperature proof, humidity proof, waterproof, shock proof, drop proof, magnet proof, X-ray proof and wear-out proof. The SanDisk Memory Zone app for desktop and Android lets you back up, organize and transfer photos and videos. With an SD adapter, the card works with DSLR and mirrorless cameras, camcorders, laptops and portable audio recorders.
