SanDisk Extreme PRO 128GB
Top PickWhat We Like
- V30 and U3 ratings handle 4K and bursts
- Reads up to 200MB/s for quick offloads
- 128GB covers a long day without swapping
- Lifetime limited warranty
Worth Noting
- UHS-I only, so UHS-II bodies leave speed unused
- Capacity
- 128 GB
- Warranty
- Lifetime limited
- Max Read Speed
- 200 MB/s
- Max Write Speed
- 90 MB/s
The Extreme PRO is the card we point most people to, and the reason is a comparison. It does the everyday jobs — 4K clips, continuous bursts, quick offloads — for a good deal less than the UHS-II card we also recommend. SanDisk rates it U3 and V30, with reads listed up to 200MB/s and writes up to 90MB/s. V30 means a 30MB/s sustained write floor, which is comfortable for 4K UHD at ordinary frame rates. That combination is what makes it the default pick here.
We have run it through the boring cycle that decides whether a card earns trust: format, shoot, pull, copy, format again. Nothing about it made us think about it, which is the compliment a memory card wants. The 128GB capacity is the part we appreciate most in practice — a long day of stills or a couple of hours of 4K footage fits without a mid-shoot swap, and a swap in a field or on a cliff edge is exactly when cards get dropped.
One boundary is worth knowing before you order: the 200MB/s read figure assumes a reader that can keep up. In an older USB reader you see a small fraction of it, so budget for a matching one, or expect the speed to arrive when you upgrade. The 90MB/s write figure holds either way, and that is the number your camera actually cares about.
Bottom line: We recommend the Extreme PRO as the default card here: V30 and U3 cover 4K and bursts, 128GB avoids mid-shoot swaps, and it costs far less than the UHS-II option.