My impression is that the SxS cards use a two-chip internal RAID setup similar to P2; if it was only one chip they should be selling for a fraction of the price per GB.

Perhaps it is. For the SxS I received, the measured performance is suspiciously close to SanDisk's Ducati Flash product specs, which retails for $315 for an GByte CF card Has anyone been able to clock anything faster than 45 MBytes/second, read or write with SxS?

http://www.esend.com/sandisk/Product...008G-AD1(Esend)

SanDisk EXTREME DUCATI CF 8GB CF Card. SanDisk Extreme and Ducati Corse brand are synonymous when it comes to the best in technology, performance, elegance, success and design. For a limited time, the award winning brand of SanDisk Extreme will leverage our license opportunity with Ducati Corse and introduce an exclusive product line of high performance digital memory products. As the official memory card for Ducati, the Ducati Edition CompactFlash will be SanDisks fastest memory card at 45MB/sec boasting a new look and feel in its specially designed card label and packaging. Products available in the US and CANADA only Note: 1 megabyte/ MB equals 1 million bytes/ 1 gigabyte/ GB equals 1 billion bytes. Some of the listed capacity is used for formatting and other functions, and thus is not available for data storage.
Online Price: $314.99