SanDisk Extreme microSDXC UHS-I Card (256GB) Review
Live prices and creator coverage for the SanDisk Extreme microSDXC UHS-I Card (256GB) - everything in one place.

Our editorial take on the SanDisk Extreme microSDXC UHS-I Card (256GB)
The SanDisk Extreme microSDXC UHS-I Card provides 256GB of storage with an emphasis on speed and durability. Its read speeds up to 160MB/s and write speeds up to 90MB/s, along with U3 and V30 speed classes, indicate it is designed for demanding tasks such as recording 4K UHD video and capturing rapid-fire photography. The A2 rating suggests optimized performance for app loading on compatible devices.
Durability is a significant aspect of this card, as it is engineered to be temperature-proof, waterproof, shock-proof, and x-ray proof. This makes it suitable for use in environments where standard memory cards might be susceptible to damage. The included SD adapter enhances its versatility, allowing for use in a broader range of host devices.
With a lifetime limited US warranty, the SanDisk Extreme microSDXC UHS-I card positions itself as a robust solution for users requiring reliable high-speed storage in challenging conditions, especially those involved in content creation with compatible high-performance cameras or drones.
- High read and write speeds (160MB/s read, 90MB/s write) suitable for 4K UHD video
- A2 rating for faster app loading performance
- Extreme durability: temperature-proof, waterproof, shock-proof, and x-ray proof
- Includes SD adapter for broader device compatibility
- Lifetime limited warranty (US only)
- Maximum capacity available is 256GB, which may be limiting for some extended 4K recording scenarios
- Durability features, while extensive, may not be necessary for all users
Synthesized by Geared editors from early expert reviews.
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Specs
- Capacity
- 256GB
- Warranty
- Lifetime limited (US only)
- Read Speed
- 160MB/s
- Form Factor
- microSDXC
- Speed Class
- C10, U3, V30, A2
- Write Speed
- 90MB/s
- Compatibility
- Compatible with microSDHC™ and microSDXC™ UHS-I supporting host devices, includes adapter for compatibility with full size SDHC™ and SDXC™ devices
- Dimensions Microsd
- 0.59inx0.43inx0.03in (14.99mmx10.92mmx1.02mm)
- Storage Temperature
- -40°F to 185°F (-40°C to 85°C)
- Dimensions Sd Adapter
- 1.26inx0.94inx0.08in (24mmx32mmx2.1mm)
- Operating Temperature
- -13°F to 185°F (-25°C to 85°C)
Where to buy
Live prices from retailers. We earn a small commission when you click through - never affects ranking.
- B&H Photonew● In stock-Buy
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