SanDisk SDSDXV2-064G-GNCIN 64GB Extreme SDXC UHS-I Card — main product image

SanDisk SDSDXV2-064G-GNCIN 64GB Extreme SDXC UHS-I Card

SanDisk

SanDisk SDSDXV2-064G-GNCIN 64GB Extreme SDXC UHS-I Card

Name: SanDisk SDSDXV2-064G-GNCIN 64GB Extreme SDXC UHS-I Card
Brand: SanDisk
SKU: SDSDXV2-064G-GNCIN

★★★★★4.8 (15649 reviews)

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SanDisk's 64GB Extreme SDXC card delivers up to 170MB/s read speeds with QuickFlow Technology for fast 4K video and burst shooting.

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Overview

The SanDisk 64GB Extreme SDXC UHS-I card is engineered for photographers and videographers who need reliable performance for 4K UHD video capture and high-speed burst photography. With read speeds reaching up to 170MB/s through SanDisk's proprietary QuickFlow Technology, the card significantly reduces the time spent transferring files from card to computer — a meaningful advantage when working with large media files on tight deadlines. Write speeds of up to 80MB/s support rapid sequential shooting, while the U3 and V30 speed class ratings guarantee a minimum sustained write speed of 30MB/s, ensuring smooth and uninterrupted 4K video recording without dropped frames.

Durability is a key strength of the Extreme line. The card is rated water-proof, x-ray-proof, and temperature-proof, providing peace of mind for photographers who shoot in demanding outdoor environments where cards may be exposed to moisture, extreme heat, or airport security scanners. To unlock the maximum 170MB/s transfer speeds, SanDisk recommends pairing the card with their Professional PRO-READER SD card reader, though the card will still deliver strong performance in any compatible UHS-I device. At 64GB, the card offers a practical capacity for day shoots, events, or as a reliable backup card, balancing storage space with the speed performance that working professionals expect from the SanDisk Extreme series.

Key Features

Save time with card offload speeds of up to 170MB/s powered by SanDisk QuickFlow Technology (Up to 170MB/s read speed. Engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes. SanDisk QuickFlow Technology is only available for 64GB, 128GB, 256GB, and 512GB capacities. 1GB=1,000,000,000 bytes. Actual user storage less.)

Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately)

Write speeds up to 80MB/s (Engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes.)

Perfect for shooting 4K UHD video and sequential burst mode photography (Full HD (1920x1080) and 4K UHD (3840 x 2160) video support may vary based upon host device, file attributes and other factors. See HD page on SanDisk site.)

Capture uninterrupted video with UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) (UHS Speed Class 3 designates a performance option designed to support 4K UHD video recording with enabled UHS host devices. UHS Video Speed Class 30 (V30), sustained video capture rate of 30MB/s, designates a performance option designed to support real-time video recording with UHS enabled host devices. See the SD Association’s official website.)

Specifications

Capacity

64GB

Card Type

SDXC

Interface

UHS-I

Read Speed

Up to 170MB/s

Write Speed

Up to 80MB/s

Speed Class

C10, U3, V30

Technology

SanDisk QuickFlow Technology

Durability

Water-proof, x-ray-proof, temperature-proof

Model

SDSDXV2-064G-GNCIN

Pros & Cons

👍 Pros

Read speeds up to 170MB/s with QuickFlow Technology significantly speed up file transfers and card offloading
U3 and V30 speed ratings ensure reliable sustained performance for continuous 4K video recording
Durable construction is rated water-proof, x-ray-proof, and temperature-proof
Widely compatible with cameras, camcorders, and card readers that accept standard SDXC cards

👎 Cons

Write speed of 80MB/s may limit continuous high-bitrate burst shooting on some high-resolution cameras
64GB capacity fills up relatively quickly when shooting 4K video or high-resolution RAW files
Maximum read speeds require a QuickFlow-compatible reader to achieve the full 170MB/s
UHS-I interface is slower than UHS-II cards available at a similar price point from some competitors

Frequently Asked Questions

What are the read and write speeds of this card?

The SanDisk 64GB Extreme delivers read speeds up to 170MB/s using SanDisk QuickFlow Technology and write speeds up to 80MB/s, though actual performance depends on the host device and conditions.

Can this card record 4K UHD video?

Yes, with UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings, it supports sustained write speeds of 30MB/s needed for 4K UHD video recording on compatible cameras.

What does SanDisk QuickFlow Technology do?

QuickFlow Technology is SanDisk's proprietary architecture that enables read speeds beyond the standard UHS-I 104MB/s specification, reaching up to 170MB/s when used with compatible devices such as the SanDisk Professional PRO-READER.

How durable is this SD card?

The card is rated as water-proof, x-ray-proof, and temperature-proof, making it resilient against common environmental hazards encountered during travel and outdoor photography.

Is this card compatible with UHS-I devices only?

It uses the UHS-I interface, so it is compatible with any device that supports SD, SDHC, or SDXC UHS-I cards. Older non-UHS devices may work at reduced speeds.