The dual-channel memory format is the standard for high-end performance systems, and is the de facto packaging for most DDR memory. The "matched pair" format has become very popular, as these DDR module kits are perfectly suited for the requirements of high-end dual-channel DDR operation, and are a much safer buy than purchasing one module now and hoping to match it up later. The most popular configurations are currently the 2x512-MB and 2x1-GB kits (although 2x2-GB are emerging) and with few exceptions, vendors offer the same basic speeds in matched pair DDR kits, as with their single module DDR.
The dual-channel DDR chart did hold better news, but it was mostly due to one large price drop. Corsair XMS PC3200 XPert 2x1-GB fell by a whopping $144 this week, but this can be misleading, as a certain vendor got it back in stock, after being unavailable for several weeks. There was another significant price decrease, as Corsair XMS PC3200LL 2x1-GB dropped by $44, but the next largest was only a $7 cut. The price increases were more varied, and included a trio of double-digit spikes: OCZ PC3200 Platinum XTC 2x1-GB (+$27), Mushkin eXtreme PC4000LL 2x1-GB (+$24) and Patriot PC3200 2x1-GB (+$15). This resulted in an aggregate chart drop of $122, but that would have changed considerably had the Corsair XMS PC3200 XPert 2x1-GB remained out of stock.