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 was quite active, and easily outpaced the drops in the single module section. There were some very deep cuts in the area, including $40 off the price of Corsair XMS PC4400 2x512-MB, $20 shaved off of both Corsair XMS PC3200LL 2x512-MB and OCZ PC4200 EL 2x256-MB, along with a nice $31 drop to OCZ PC4000 EL 2x256-MB. This is a great week for matched pair DDR purchases, and there are some deals at virtually all sizes and speeds.