SanDisk Extreme 90MB/s UHS-I U3 V30 32GB SDHC Memory Card Review with speed tests and benchmarks - Camera Memory Speed Comparison & Performance tests for SD and CF cards
Amazon.com: Professional Ultra SanDisk MicroSDHC 32GB (32 Gigabyte) Card for GoPro Hero 3 Black Edition Camera is custom formatted and rated for high speed, lossless recording! (HC UHS-I Class 10 Certified 30MB/s) :