For videographers shooting high-resolution video, the Taiwanese flash-card maker has two new choices with faster write speeds and capacities up to 128GB.
Stephen Shanklandprincipal writer
Stephen Shankland has been a reporter at CNET since 1998 and writes about processors, digital photography, AI, quantum computing, computer science, materials science, supercomputers, drones, browsers, 3D printing, USB, and new computing technology in general. He has a soft spot in his heart for standards groups and I/O interfaces. His first big scoop was about radioactive cat poop.
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The newer UHS-1 (Ultra High Speed) Class 3 specification requires sustained write performance of 30MBps.
Yes, SD card categorization is a bottomless pit of acronyms. And here are two more: SDHC and SDXC, which govern maximum capacity. SDHC models top out at 32GB capacity, but SDXC can go much, much higher.
Transcend's SDXC models reach 128GB, enough for 8 hours of UltraHD video shot at a resolution of 4096x2160, with a 35Mbps bitrate and the H.264 AVC compression standard. The Extreme models top out at 64GB, though.
The SDXC Extreme models cost $59 for 32GB and $119 for 64GB. The somewhat slower models cost $49 for 64GB and $109 for 128GB.