SanDisk Extreme UHS-I U3 SD 128GB Memory Card

Name: SanDisk Extreme UHS-I U3 SD 128GB Memory Card
Brand: SanDisk
SKU: Extreme UHS-I U3 SD

Overview

The SanDisk Extreme 128GB SDXC card is engineered for photographers and videographers who demand fast, reliable storage for high-resolution content. With a maximum read speed of 150MB/s, transferring large batches of RAW photos or 4K video clips to a computer is noticeably faster than with standard SD cards. The 70MB/s write speed supports sequential burst mode shooting and continuous 4K UHD video recording, backed by the card's V30 Video Speed Class and UHS Speed Class 3 (U3) ratings, both of which guarantee a minimum sustained write speed of 30MB/s.

Beyond speed, the SanDisk Extreme is built for the conditions that working photographers actually encounter. It is rated as temperature-proof, waterproof, shock-proof, and X-ray-proof, meaning it can survive rain on a shoot, the jostling of a camera bag, and repeated trips through airport security scanners. The 128GB capacity offers a practical balance between having enough space for a full day of shooting and keeping the card at a manageable price point. As a Class 10/UHS-I card, it is broadly compatible with any camera or device equipped with a standard SDXC-capable SD slot, making it a versatile storage solution across a wide range of gear.

Key Features

The card that lets you take control of your creativity and get to your best shot faster

Specifications

Brand

SanDisk

Model

SDSDXV5-128G-ANCIN

Storage Capacity

128 GB

Card Type

SDXC

Maximum Read Speed

150 MB/s

Maximum Write Speed

70 MB/s

Speed Class

Class 10 / UHS-I (U3)

Video Speed Class

V30

Durability

Temperature-proof, Waterproof, Shock-proof, X-ray-proof

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Pros & Cons

👍 Pros

150MB/s read speed significantly reduces transfer time when offloading large photo and video files
V30 and U3 ratings ensure reliable sustained write performance for 4K UHD recording
Temperature-proof, waterproof, shock-proof, and X-ray-proof construction protects data in harsh conditions
128GB capacity holds substantial amounts of high-resolution photos and 4K footage
70MB/s write speed supports fast sequential burst mode photography

👎 Cons

70MB/s maximum write speed may be limiting for cameras that support higher-bitrate recording formats
UHS-I interface does not take advantage of UHS-II speeds on cameras that support the faster bus
No included SD card reader or case for storage and transport
128GB can fill up relatively quickly when shooting extended 4K video sessions

Frequently Asked Questions

What devices is the SanDisk Extreme 128GB SD card compatible with?

It is an SDXC card compatible with any camera, camcorder, or device with a full-size SD card slot that supports SDXC and UHS-I standards.

Can this card handle 4K video recording?

Yes, it carries a V30 (Video Speed Class 30) rating, which guarantees a minimum sustained write speed of 30MB/s—the threshold required for 4K UHD video capture.

How durable is this SanDisk Extreme card?

It is built to withstand temperature extremes, water, physical shock, and airport X-rays, making it reliable for outdoor and travel photography.

What are the actual read and write speeds of this card?

The maximum read speed is 150MB/s for fast file transfers, and the maximum write speed is 70MB/s for capturing high-resolution photos and video.

What does the U3 speed class rating mean for this card?

UHS Speed Class 3 (U3) guarantees a minimum sustained write speed of 30MB/s, ensuring consistent performance during continuous shooting and video recording.