SanDisk Extreme 180MB/s 256GB SDXC Card Review. Key Features:

• Save time with card offload speeds of up to 180MB/s (Up to 180MB/s read speed. Engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes.)