Intel releases next generation Xeon

As expected, Intel Corp. on Monday unveiled the next generation of its Xeon processor, which will be the company's first chip to include the Extended Memory 64 Technology (EM64T) that allows the processor to run both 64-bit and 32-bit software.

The microprocessor vendor also released a chipset for workstations based on the new Xeon processor, called the E7525, that includes a faster 800MHz system bus, DDR2 (double data rate) memory, as well as Intel's next-generation PCI (Peripheral Component Interface) Express interconnect.

The new Xeon, which had been code-named Nocona, comes more than a year after Intel's rival, Advanced Micro Devices Inc. (AMD) released its Opteron processor, which takes the similar approach of extending Intel's 32-bit x86 processor instructions so they can handle 64-bit computing.

Though Opteron and Nocona are expected to run the same software, they have significant differences, said Richard Dracott, general manager for Intel's enterprise platform marketing and planning group. "We have taken a different approach to how we balance the system overall," he said. "We chose to go with a faster front side bus, faster subsystem, and PCI Express."

Intel, for example, does not support AMD's 3DNow graphics instructions, he said.

Nocona and Opteron systems will have different designs and use different chipsets, but for most users, the difference between the two processors will not be visible, said Jim Turley, a microprocessor analyst based in Pacific Grove, California. "It still looks like a PC, smells like a PC and feels like a PC," he said. "The battle now is what sort of brand and reputation do these companies have."

The Linux operating system already supports the 64-bit extensions used by Nocona and Opteron, but Microsoft support will not occur until the company ships new service pack releases of Windows XP and Windows Server 2003, which are both expected by year's end.

Intel's x86 processors and chip sets will gradually adopt the new 64-bit extensions over the next few years, with the majority of x86 workstation and server systems supporting the technology by 2005 and the majority of all Intel systems, including desktops and notebooks, shipping with the extensions by 2006, Dracott said.

A Nocona chip set designed for servers, called the E7320, will become available by the end of August, Intel said. At the same time, the company will release a new version of its Pentium processor, code-named Prescott, that will support the EM64T 64-bit extensions, the company said.

This will be followed in early 2005 by a new EM64T version of the Xeon MP processors, which are designed for four-way and eight-way systems.

Monday's news was accompanied by announcements from a number of hardware vendors, including Dell Inc. and Hewlett-Packard Co. detailing plans to release EM64T workstations with as much as 16GB of memory. Workstation users such as digital content creators and computer-aided design engineers are among the relatively few groups of users who are working on applications that are bumping up against the 4GB addressable memory limit of 32-bit processors.