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 2x512MB and 2x1GB kits (although 2x2GB are emerging) and with few exceptions, vendors offer the same basic speeds in matched pair DDR kits, as with their single module DDR.
The overall pricing trends were very similar in the dual-channel DDR chart, and the majority of changes resulted in higher price levels. The only difference was a massive $71 cut to the price of a Mushkin Redline PC4000LL 2x1GB kit, which was also the only noticeable decrease in the entire chart. There were six price increases that reached double digits, including two of $20 or more: Centon PC3200 2x1GB (+20) and Corsair XMS PC3200 2x1GB (+$21). Due to that individual $71 drop, the chart did show less of an overall increase, but it still jumped by a total of $26.