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 activity in the dual-channel DDR chart was not quite as impressive, but we still found lower prices in many areas. The chart had four listings that fell by double digits, including the Mushkin eXtreme PC4000LL 2x1-GB (-$30), G.SKILL PC3200 C2.5 2x1-GB (-$15) and Patriot PC3200 2x1-GB (-$15) dual-channel kits. Unfortunately, there were two listings that increased by a similar amount, as the price of Crucial Ballistix Tracer PC4000 2x512-MB and Crucial Ballistix Tracer PC4000 2x1-GB jumped by $12 and $27, respectively. The overall chart activity was muted by these two price spikes, but it still dropped by an aggregate total of $110.