The Perfect Part 256-pack memory accessory 256GB U3 V30 C10 120MB/s 60MB/s 4K 1080P

256-pack MicroSD storage cards

This pack contains 256 individual microSD cards rated at 256 GB each. They are suited for Android smartphones that support adoptable storage and need high-capacity media for apps and media files. The cards carry Class 10, U3 and V30 ratings. They are not for buyers who need a single high-capacity card or a different form factor.

UHS-I bus read up to 120MB/s write up to 60MB/s

The UHS-I interface limits sequential read speed to 120 MB/s and write speed to 60 MB/s. Random performance reaches 4000 read IOPS and 2000 write IOPS under the A2 specification. Continuous 4K UHD recording is supported for up to three hours. Builders who require sustained write throughput beyond UHS-I limits cannot use these cards.

A2 rating 4000 read IOPS 2000 write IOPS

The A2 application performance class guarantees 4000 random read IOPS and 2000 random write IOPS. This figure determines whether apps launch quickly when run directly from the card. Users who prioritise raw sequential throughput over random IOPS should consider a different specification.