Sandisk 8GB 30 MB/s Extreme III Compact Flash [CF] Memory Card at KEH Camera
Amazon.com: SanDisk Extreme 64GB CompactFlash CF Memory Card (2 Pack) Works with Canon EOS 5D Mark IV Digital DSLR Cameras HD UDMA 7 (SDCFXSB-064G-G46) Bundle with Everything But Stromboli Combo Reader :
SanDisk Extreme Pro 256GB 160MB/sec Compact Flash card test - YouTube