AMD this morning quietly released new speed grades of its Phenom X4 quad-core processors that include the company's fastest-ever as well as as two low-power versions. The Phenom X4 9950 Black Edition runs at 2.6GHz and is targeted at hobbyist gamers with a relative freedom to overclock the chip past spec with enough cooling. The processor is otherwise the same as earlier enthusiast chips with 140-watt power use and 512KB of Level 2 cache per core. The new Black Edition ships for $235 per chip in batches of 1,000 and should be available today.Opposite to the 9950 Black, the Phenom X4 9150e and 9350e run at 1.8GHz and 2GHz respectively and consume a much lower 65 watts of typical peak power. The designs let users run a full four-core AMD system without requiring a high-demand power supply or extensive cooling; they also help push down the floor for quad computing with respective prices of $175 and $195, undercutting most Intel Core 2 Quad chips.
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