AMD's processors are receiving a price cut, the most significant of which is centered around their triple-core variant of the Phenom. The CPU can now be acquired for fairly low prices, depending on where you acquire it. In the EU, it is selling for less than 100, and in the U.S. it floats at about $160. That's a decent price for building a multi-core machine, especially if you are trying to avoid entry-level hardware. This is likely good news for Dell, who announced four months ago that they would be carrying triple-core Phenoms in their desktop rigs.
AMD originally paved their way into the desktop CPU market by offering CPUs comparable to Intel's at a much better price point. That trend of offering low cost CPUs as a way to attracting more customers remained through all the way up to the Thoroughbred-based Athlons. In the past few years the trend changed, with AMD offering pricey enthusiast CPUs and the Celerons seeing very low price points, which played a part in how AMD lost their edge. A triple-core Phenom priced in nearly the same bracket as a Core 2 Duo might weigh heavily in their favor.
Intel does not have a triple-core competitor, as their design allows them to create only dual or quad core CPUs. AMD is betting that the cost to performance ratio of a triple core processor will help them.