AMD today announced immediate availability of four new high-performance AMD Phenom X4 processors.

Led by the AMD Phenom X4 9850 Black Edition processor, each CPU features true quad-core design, and when matched to AMD 790 series chipsets supports up to four ATI Radeon HD 3800 series graphics cards.
Featuring the best quad-core desktop CPUs AMD has offered, these AMD Phenom X4 quad-core processors can improve performance for gaming and multi-threaded applications.
The AMD Phenom X4 9850 Black Edition is the top performer in the new line-up, with Clock Multiplier Control for tunable performance that gives gamers and enthusiasts scalability and customizable performance levels to run multiple processor-intensive applications simultaneously.

The AMD Phenom quad-core processor is the world’s most advanced desktop PC processor, commanding four natively integrated processor cores to break system bandwidth barriers and turbo-charge high definition (HD) platform performance. Customers can implement AMD Phenom X4 processors 9550 (2.2GHz) and 9650 (2.3GHz), or experience an enhanced multi-tasking experience with two higher frequency processors: the AMD Phenom X4 9750 (2.4GHz) and AMD Phenom X4 9850 Black Edition (2.5GHz) processors.

AMD Phenom X4 processors 9550 (2.2GHz), 9650 (2.3GHz), 9750 (2.4GHz) and 9850 (2.5GHz) are now available. The Phenom X4 9850 starts at $235 effective April 7th.
Via the AMD site. Buy the newest CPUs at NewEgg.