The number of dual-channel DDR platforms continues to increase, and has really created a subset of the memory market. The "matched pair" format is becoming increasingly 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 the 2x256-MB and 2x512-MB kits, and with few exceptions, vendors offer the same basic speeds in matched pair DDR kits, as with their single module DDR.
The high-end matched pair DDR list is also quite stable, at least relatively speaking. Since we're talking about dual-module packs, even small price shifts can become magnified, and that's really what we're seeing here. The majority of matched pair kits remained close to previous levels, but there were a few that hit double figures, and thankfully were also in the consumer's favor. There were some hefty cuts in Kingston 2X512-MB kits, as well as Corsair XMS PC4000. The only other news is the addition of Geil Ultra Platinum PC4400 and OCZ PC4400 Gold kits to the list, and enhancing the already-impressive high-end selection.