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SanDisk SDSDUNC-064G-AN6IN Ultra 64GB SDXC Memory Card — main product image
SanDisk SDSDUNC-064G-AN6IN Ultra 64GB SDXC Memory Card
SanDisk SDSDUNC-064G-AN6IN Ultra 64GB SDXC Memory Card
SanDisk SDSDUNC-064G-AN6IN Ultra 64GB SDXC Memory Card
SanDisk SDSDUNC-064G-AN6IN Ultra 64GB SDXC Memory Card
SanDisk

SanDisk SDSDUNC-064G-AN6IN Ultra 64GB SDXC Memory Card

★★★★★4.5 (216 reviews)
1080p

64GB of UHS-I storage delivering 80MB/s reads for smooth Full HD capture and fast file transfers

$21.95*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The SanDisk Ultra SDSDUNC-064G-AN6IN is a 64GB SDXC card built on UHS-I bus architecture with sequential read speeds up to 80MB/s — roughly twice the throughput of a baseline Class 10 card operating at minimum spec. In practical terms, that 80MB/s ceiling means transferring a full card of photos takes around 13 minutes rather than 25+, and the Class 10 / U1 sustained write floor of 10MB/s provides enough headroom for continuous 1080p video capture at standard bitrates. The card operates within the SDXC standard using the exFAT file system, supporting files larger than 4GB — relevant for extended video clips that would exceed the FAT32 limit on older SDHC cards.

This card targets users with compact cameras, mid-range point-and-shoots, and Full HD camcorders — devices whose write demands fall comfortably within U1 specifications. It is not engineered for high-speed burst RAW shooting or 4K video, where U3/V30-rated cards are necessary to avoid write bottlenecks. The physical durability profile is genuinely robust: SanDisk's waterproof, temperature-proof (-25°C to 85°C), shockproof, X-ray-proof, and magnet-proof ratings mean the card handles travel, extreme weather, and airport security without data loss. For a secondary card, a travel backup, or a primary card in a device that doesn't demand U3 speeds, the Ultra 64GB remains a pragmatic and well-proven choice.

Key Features

Twice As Fast As Ordinary Shdc & Sdxc Cards

Class 10 Performance For Full Hd Video (1080p)

Read Speeds Up To 80mbps

Engineered With Uhs-i Bus Architecture

Waterproof, Temperature proof, X-ray proof, Magnet proof & Shockproof

Specifications

Brand
SanDisk
Model
SDSDUNC-064G-AN6IN
Capacity
64GB
Card Type
SDXC
Speed Class
Class 10 (U1)
Bus Architecture
UHS-I
Read Speed
Up to 80MB/s
Durability
Waterproof, Temperature-proof, X-ray-proof, Magnet-proof, Shockproof
Equivalent Incandescent Performance
Twice as fast as ordinary SDHC/SDXC cards
Video Support
Full HD 1080p

Pros & Cons

👍 Pros

  • 80MB/s read speed cuts file transfer time roughly in half compared to standard Class 10 cards without UHS-I optimization
  • Class 10 / U1 write floor of 10MB/s sustains uninterrupted 1080p video recording across extended clips
  • Multi-environment durability ratings (waterproof, shockproof, X-ray-proof) protect data integrity through harsh field conditions and travel
  • 64GB capacity stores approximately 2,800 24-megapixel JPEGs or over 5 hours of 1080p video at standard bitrates
  • Broad SDXC compatibility works across compact cameras, DSLRs, camcorders, and laptop card slots without adapters

👎 Cons

  • Write speeds are not separately rated and fall below the read speed, which becomes noticeable during burst shooting with high-resolution RAW files
  • No U3 or V30 speed class means this card cannot reliably handle 4K video recording workloads
  • 80MB/s maximum read speed lags behind newer UHS-I cards that reach 120–170MB/s, extending transfer times for large shoots
  • Lacks the UHS-II bus interface, so photographers who later upgrade to UHS-II capable cameras won't see any speed improvement from this card
  • No included card reader or case — you'll need a UHS-I compatible reader to achieve the rated 80MB/s transfer speed

Frequently Asked Questions

The SDSDUNC-064G-AN6IN uses the standard full-size SDXC form factor with UHS-I bus architecture. It works with any camera, camcorder, or card reader that supports SDXC and UHS-I. Check that your device supports SDXC (not just SDHC) since the 64GB capacity requires it.
Yes. The Class 10 rating guarantees a minimum sustained write speed of 10MB/s, which exceeds the ~12–24 Mbps (1.5–3MB/s) bitrate requirements of most 1080p codecs. You'll record continuously without buffer overruns at standard Full HD settings.
Not recommended. 4K recording typically requires UHS Speed Class 3 (U3) with a minimum 30MB/s sustained write speed. This card carries a Class 10 / U1 rating with a 10MB/s minimum write floor, which is insufficient for reliable 4K capture.
SanDisk rates it as waterproof, temperature-proof (operating from -25°C to 85°C), X-ray-proof, magnet-proof, and shockproof. These are tested to IEC standards, meaning the card can survive airport X-ray scanners, accidental water exposure, and rough handling in a gear bag.
At the rated 80MB/s read speed with a UHS-I capable reader, a full 64GB transfer completes in approximately 13–14 minutes. Actual speeds depend on your reader and USB interface — a USB 2.0 reader will bottleneck well below 80MB/s.

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