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.
In terms of individual price changes, the news was much better in our dual-channel DDR listings, as there were four matched pair kits that received drops of $10 or more. These include the Crucial Ballistix Tracer PC4000 2x512-MB (-$16), Corsair XMS PC3200LL 2x1-GB (-$11), PNY Optima PC3200 2x1-GB (-$10), and G.SKILL PC3200 C2.5 2x1-GB (-$10) kits. There were only two similar price increases, but unfortunately, one of them was a massive $97 price spike to Mushkin EM3200 PC3200 2x1-GB. This really hit the overall chart hard, and instead of a small overall drop, we found a $32 aggregate chart increase compared to our previous guide.