SanDisk Extreme 100 MB/s UHS-I U3 V30 A1 64GB microSDXC Memory Card Review with speed tests and benchmarks - Camera Memory Speed Comparison & Performance tests for SD and CF cards
SanDisk Extreme Pro 64GB Memory Card for Sony a1 & Sony Alpha Series Cameras Class 10 UHS-I High Speed SDXC (SDSDXXY-064G-GN4IN) Bundle with (1) Everything But Stromboli Micro & SD 3.0 Card