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Standard SDXC memory card labelled Transcend 340S 256GB U3 V30 A1

Transcend

Transcend 340S 256GB SDXC U3 V30 A1 memory card

SKU CH-9RQZ-9ACCT

256GB SDXC card with U3, V30 and A1 ratings for 4K video and fast app performance

  • Total capacity256 GB
  • Memory card formatSDXC
  • Speed classClass 10
  • Max read speed160 MB/s
  • Write throughput90.0
  • Product typeSecure Digital (SD)
  • 256GB capacity stores thousands of photos and hours of 4K video
  • Read speeds up to 160MB/s transfer large files quickly
  • Write speeds up to 90MB/s sustain fast burst shooting
  • V30 and U3 ratings guarantee smooth 4K video recording
  • A1 rating delivers high performance for mobile applications

256GB SDXC Card for DSLR and Camcorder Users

This Transcend 340S card provides 256GB of SDXC storage designed for UHS-I compliant DSLR cameras and camcorders. It targets photographers and videographers who need reliable capacity for high-resolution stills and 4K video. The A1 rating supports app performance on compatible mobile devices.

UHS-I Interface Limits Read to 160MB/s

The UHS-I bus caps maximum transfer rates at 160MB/s read and 90MB/s write, so sustained throughput cannot exceed these figures. V30 and U3 ratings guarantee a minimum 30MB/s sequential write for uninterrupted 4K capture. Class 10 ensures 10MB/s baseline performance for Full HD recording.

Verify Your Device Supports SDXC

Check that your camera or camcorder accepts SDXC cards and can utilise UHS-I speeds for the stated performance. Devices limited to SDHC or non-UHS buses will not reach the advertised read or write rates. Confirm 4K recording requirements match V30 minimum sustained write capability.

How it compares

Measured against everything we stock in SD & MicroSD Memory Cards, at today’s prices. Recalculated every night.

Price $103.99
Pricier than about 73% of the 1,947 comparable items (median $46.99).
Total capacity 256 GB
Higher than about 80% of the 1,132 comparable items (median 64 GB).
Price per TB $406.21 per TB
Typical for this category: the median of 901 items is $374.69 per TB.

Specifications

Product
Brand nameTranscend
Model name710943
Part number710943
Total capacity256 GB
Product typeSecure Digital (SD)
Performance
Speed classClass 10
Max read speed160 MB/s
Write throughput90.0
Storage
Memory card formatSDXC

Questions about this item

Which capacity of the Transcend 340S SDXC card should I choose for 4K video work?

The 256GB model holds hours of 4K footage and thousands of photos, letting you shoot extended sessions without swapping cards.

What does the 160MB/s read speed mean when I offload files to my computer?

At up to 160MB/s you can transfer a full card of 4K clips in a fraction of the time slower cards need, keeping post-production moving.

What does the UHS-I interface limit in real-world use?

The card is built to the UHS-I standard and delivers up to 160MB/s read and 90MB/s write, matching the bus capability for sustained 4K recording.

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