While not the first to release a UDMA-7 CompactFlash card – that honor belongs to SanDisk and their $800 (street) 128GB Extreme PRO card – Lexar was the first to bring an affordable UDMA-7 card to market in the form of their Professional 1000x cards. With some caveats, I can say that UDMA-7 delivers on the promise of greater speeds – if you have the right gear.
The catch, as usual, is that you need UDMA-7 equipment to pair the card with, whether it is a camera for recording images or a reader to download them.
Currently, the only cameras with UDMA-7 support are the Canon EOS-1DX, Nikon D4, and Nikon D800. Canon offers a firmware upgrade for some other cameras. Cameras without UDMA-7 support can still expect good speed out of this card, but not appreciably better than current UDMA-6 (500x-600x) cards.
As for readers, the Lexar USB 3.0 Dual-Slot reader, with proper firmware, supports UDMA-7. Read speeds with this card and my Lexar reader before the firmware upgrade were hellishly slow — we’re talking USB 2.0, non-UDMA speeds of less than 20 MB/sec. But with the easy firmware upgrade, the card notched a blazing 102 MB/sec, a solid 50% increase in download speed over any other card I’ve tested in this reader.
Support this site and buy from our sponsors:
Lexar 16GB CompactFlash Memory Card Professional 1000x UDMA (B&H – $155)
Lexar 16GB CompactFlash Memory Card Professional 1000x UDMA – 2-Pack (B&H – $255)