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 listings followed many of the same trends we saw in the single-module chart, at least in terms of price cuts. The largest drop was again to 1-GB modules, as Crucial Ballistix PC4000 2x1-GB fell a whopping $60. There were a few smaller cuts to Crucial Ballistix Tracer PC4000 2x512-MB (-$28) and Crucial Ballistix PC4000 2x256-MB (-$14), but these were more than offset by similar price spikes. In our previous update, there were several heavy discounts available, that are unfortunately back up to standard levels. These include a $67 spike to Kingston HyperX PC3700 2x512-MB and a $40 jump to the price of OCZ PC4200 EL 2x512-MB, just to name a few. In fact, the cumulative price change in the matched pair chart was negligible, with matched-pair DDR even showing a slight overall increase.