AMD gets dual-core with Athlon 64 X2

AMD is rolling out its first dual-core chips for desktops by launching four dual-core Athlon 64 X2 processors: the 4800+, the 4600+, the 4400+ and the 4200+. PCWorld
pronounces AMD's chip the better performer after testing, but at twice the price of Intel's Pentium D dual-core offerings there are bound to be many folks wondering if the extra performance is worth it. They mention you'll get the largest performance boost if you use multithreaded software or work with multiple applications at once, which prompts us to wonder — are there really people out there who actually only run one application at a time?