The new Xeons server-oriented CPUs, known by the code name Prestonia, will be offered at 2.2GHz for $615, 2GHz for $417 and 1.8GHz for $251. The Xeons, based on the Pentium 4 architecture, are also the first to incorporate a performance-enhancing technology called hyperthreading. The new feature essentially enables a single Xeon to act like virtual dual processors. When used in conjunction with software designed for multi-CPU systems, hyperthreading can provide up to a 40 percent boost in performance compared with a same-speed Xeon with hyperthreading disabled, Intel officials said. In other hardware news, Seagate demonstrated a Serial ATA-enabled hard drive at the Intel Developer Forum today in San Francisco.