AMD’s new quad core chips are out, their big benefit being low prices. You can learn more about the chips and link to a dozen reviews here:

- The new, improved AMD Phenom

See also:

- Is the Intel vs. AMD chip war back on?

From the article:

Recently, though, AMD has begun showing some signs of life, pushing out a graphics chip set early this month and a slew of new desktop processors this week. With the first AMD Barcelona-based systems expected to hit in April, and a 65-watt quad-core desktop chip and a triple-core desktop chip now in the mix, AMD may be starting to kick back into gear.