WDC has the highest-capacity microSDXC card at 400GB – pumping up mobile device storage space – and has launched a natty little iPhone charger that backs up the phone’s data.
The SanDisk Ultra Plus microSDXC UHS-I card comes in a range of capacities, from 16GB through 32, 64, 128, 200, and 256 to 400GB. The read speed is up to 100MB/sec.
SanDisk introduced a 256GB card, with the same read speed, in February. That used ordinary 2D or planar NAND. This latest one uses, we understand, 3D NAND and 3bits/cell (TLC) flash.
An earlier 200GB microSD card was announced in March 2015, priced at $399. The 256GB card was priced at $200. Capacities have gone up and prices down.
