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 price list is also a lot more stable than we're used to, and there are only a few double-digit price changes. This is a bit surprising, given that matched-pair DDR is a hot area of the memory market, and usually one with noticeable price cuts. Geil Ultra Platinum PC4200 2x256-MB did drop $16 and OCZ PC4400 Gold 2x512-MB fell by $14, but there were also a few price increases, like the $26 jump to OCZ PC4400 Gold 2x256-MB. This is a tough time for matched-pair DDR buyers, and unlike in past weeks, there is really no "sweet spot" that received the most significant price cuts.