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Small rectangular microSDXC card, black and red plastic body, gold contacts visible

SanDisk

SanDisk Extreme microSDXC 128GB 160MB/s 90MB/s Class 10 U3 V30 A2

SKU CH-MY2N-JM0YK

128 GB microSDXC card with 160 MB/s read and 90 MB/s write speeds, rated Class 10, U3, V30 and A2

  • Total capacity128 GB
  • Memory card formatMicroSD
  • Speed classClass 10
  • Max read speed160 MB/s
  • Write throughput90.0
  • VariantM
  • 128 GB capacity stores hours of 4K footage
  • 160 MB/s read speed transfers large files quickly
  • 90 MB/s write speed sustains high-bitrate video recording
  • U3 and V30 ratings guarantee minimum 30 MB/s sequential write
  • A2 rating accelerates app loading on mobile devices

Capacity and class

This 128 GB microSDXC card carries a Class 10, U3, V30 and A2 rating for sustained performance. It is built for devices that require fast, reliable removable storage in the smallest mainstream form factor.

Speed ratings in practice

The 160 MB/s read and 90 MB/s write speeds support 4K video capture and quick app loading on compatible hardware. UHS-I bus interface and A2 spec allow smoother multitasking when the host device can use them.

Physical format and daily use

The microSDXC form factor fits phones, action cameras, drones and other compact gear without adapters. No moving parts and solid-state construction give resistance to shock, vibration and temperature extremes in portable use.

How it compares

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

Price $48.99
Typical for this category: the median of 1,947 items is $46.99.
Total capacity 128 GB
Higher than about 60% of the 1,132 comparable items (median 64 GB).
Price per TB $382.73 per TB
Typical for this category: the median of 901 items is $374.69 per TB.

Specifications

Product
Brand nameSanDisk
Model nameSDSQXA1-128G-GN6MN
Part numberSDSQXA1-128G-GN6MN
Total capacity128 GB
Product typeMicroSDXC
Performance
Speed classClass 10
Max read speed160 MB/s
Write throughput90.0
Storage
Memory card formatMicroSD
More details
VariantM

Questions about this item

How long before the 128GB microSDXC card reaches its write-cycle limit?

The card uses Class 10, U3, V30 and A2 rated NAND rated for typical endurance; heavy 4K recording will wear it faster than occasional photo use.

What sustained write speed can the 90MB/s card maintain during long video clips?

The V30 rating guarantees a minimum 30MB/s sequential write, so extended 4K capture stays above that floor.

Does the card run hot or draw extra power during all-day 160MB/s reads?

UHS-I microSDXC cards stay cool and draw minimal current; no active cooling is needed for continuous read workloads.

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