SanDisk Extreme PRO 512GB SDXC Card
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Our take on the SanDisk Extreme PRO 512GB SDXC Card
The SanDisk Extreme PRO 512GB SDXC is a UHS-I memory card built for cameras that shoot high-bitrate video and long bursts of stills. SanDisk rates it for read speeds up to 170MB/s and write speeds up to 90MB/s, with V30 and U3 ratings that keep sustained writes above the minimum for 4K video. It sits above the plain Extreme line in durability and speed consistency, and below UHS-II cards like the Sony Tough or Lexar Professional 2000x, which cost more and need a UHS-II reader to show their advantage. It suits hybrid shooters and DSLR or mirrorless owners who want a large, dependable card without moving to a UHS-II workflow.
- 512GB holds long 4K clips and large RAW bursts
- V30 and U3 ratings cover sustained 4K video writes
- Read speeds up to 170MB/s with a UHS-I reader
- Rated for temperature, water, shock and X-ray resistance
- Backed by a limited lifetime warranty
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What reviewers say
Owners of the Extreme PRO line generally report steady performance in cameras and few failures, and treat it as a dependable workhorse card. Complaints center on write speed relative to UHS-II cards and on the premium over the standard Extreme.
- Write speedMixedOwners say writes are solid for UHS-I but well below UHS-II cards in fast cameras.
- ReliabilityPraisedLong-term users report the card keeps working through heavy shooting without corruption.
- Read speedPraisedOffloading footage is quick with a UHS-I reader, though peak figures need the right reader.
Questions and answers
- Is this card fast enough for 4K video?
- Yes. Its V30 and U3 ratings guarantee sustained writes of at least 30MB/s, which covers 4K recording on most UHS-I cameras.
- Will it work in a UHS-II camera?
- It works, but the camera falls back to UHS-I speeds. You get compatibility, not the faster bus.
- Do I need a special reader?
- To reach the rated read speeds you need a UHS-I card reader. A basic USB 2.0 reader will be much slower.
- How does it compare with the standard Extreme card?
- The Extreme PRO has higher rated read and write speeds and stronger durability ratings. The standard Extreme is a step down in speed for less money.
- Is 512GB enough for a shoot?
- It holds hours of 4K footage or thousands of RAW files, so most single-day shoots fit on one card. Many photographers still split work across two cards as a backup.
- What is in the box?
- The card only. A reader or case is not included.
