Reply To: cf and sd cards– problems, speeds

I use 16, 32 and 64GB Transcend CF cards in 300x, 400x and 600x varieties. Probably my most used is the 400x UDMA 32GB.

The S2 will store to a fast card at about 50MB/s so a fast card does make a difference. For me, the bigger issue is download speed. With either a Firewire 800 or USB 3.0, I can get 90MB/s transfer. The Transcend 400x card has a 60MB/s write and 90MB/s read, so I find it to be the perfect match for the S2 and my workflow. It is also much less expensive than a corresponding SanDisk.

In SD, your best bet is a Class 10 SDHC card, but you’ll be limited to download speeds of only about 30-40MB/s to your computer. Here, I find CF to be much, much faster.