AMD Athlon II X4 620: Four Cores for $99

AMD's new Athlon II X4 chips are like a Phenom II minus the L3 cache. But they're super-cheap: $99 (2.6GHz-620), and $122 (2.8Ghz-630). Also looks like they hold their own against the $150 Core 2 Quad 8200: [Maximum PC]