PNY has just announced the X-PRO 90 line of UHS-II SDXC memory cards, designed to keep pace with the increasing rigors of high-resolution still and video capture. Available in 64, 128, and 256GB capacities and harnessing the power of UHS-II to reach write speeds up to 280MB/s and read speeds up to 300MB/s, the X-PRO 90 is a solid card whether your job requires capturing bursts of raw stills or recording uninterrupted 8K video.
The UHS-II bus can be operated in two modes: Half Duplex or Full Duplex. For maximum speed, Half Duplex mode uses both rows of pins to transfer data in the same direction to reach the maximum speeds noted above. In Full Duplex mode, each row transfers data in the opposite direction so you can send and receive at the same time at half speed. The X-PRO 90 features a V90 speed class rating, which means its minimum read/write speeds never drop below 90MB/s for extended recording. Note that, to achieve the fastest speeds, you have to use a device that supports UHS-II.