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Red SanDisk Extreme microSDXC card 1TB UHS-I U3 A2

SanDisk

SanDisk Extreme 1TB microSDXC UHS-I U3 160/90 MB/s A2

SKU CH-RXW2-3BC2B

Stores 1 TB with 160 MB/s read and 90 MB/s write speeds for 4K UHD video and A2 app performance

  • TypemicroSDXC
  • Card typeMicroSD
  • Capacity1TB
  • Speed Class RatingUHS-I
  • Fast transfer speeds up to 160 MB/s
  • Write speeds up to 90 MB/s for 4K UHD video
  • A2 rating loads apps faster on smartphones
  • U3 and V30 ratings sustain 4K capture
  • Transfers 1000 photos and 24 GB in under 3 minutes

What it is and who it is for

The SanDisk Extreme microSDXC card offers 1 TB of UHS-I storage rated U3, V30 and A2. It targets smartphone users, action-camera owners and drone pilots who need reliable 4K UHD capture and fast app loading. The card reads at up to 160 MB/s and writes at up to 90 MB/s, moving large media libraries quickly.

Thermals, noise and power draw

As a solid-state memory card it has no moving parts, produces no audible noise and generates negligible heat during normal read or write activity. Power consumption scales with the host device and the sustained transfer rate, staying well within the limits of typical mobile and camera battery systems.

What this replaces or upgrades from

The 1 TB capacity replaces multiple lower-capacity cards for users who previously swapped media during long shoots or trips. The jump is worthwhile when a single card must hold 1000 high-resolution photos plus 30 minutes of 4K video (24 GB) and transfer that 24 GB payload in under three minutes. Buyers who need sustained write speeds above 90 MB/s or capacities beyond 1 TB should look at higher-tier formats.

Highlights

  • Fast transfer speeds up to 160 MB/s
  • Write speeds up to 90 MB/s for 4K UHD video
  • A2 rating loads apps faster on smartphones
  • U3 and V30 ratings sustain 4K capture
  • Transfers 1000 photos and 24 GB in under 3 minutes

Specifications

BrandSanDisk
SeriesExtreme
TypemicroSDXC
Card typeMicroSD
Capacity1TB
Speed Class RatingUHS-I

Questions about this item

How do I install this microSDXC card and what is the step users often miss?

Insert the card into the device slot until it clicks, then format it in the device settings before use; the step often missed is formatting, which prepares the A2-rated storage for app performance.

What maintenance or replacement will this 1TB card need over time?

No scheduled maintenance is required; replace the card if write speeds drop below 90MB/s or if read errors appear after heavy 4K UHD recording cycles.

What limit appears first during sustained 4K UHD video capture on this card?

The sustained write speed limit of 90MB/s is reached first, which governs how long uninterrupted 4K UHD recording can continue without dropped frames.

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