Intel, IBM discuss 8-core 'Nehalem' server chip
Intel on Tuesday said it will ship a server chip that contains up to eight processing cores later this year, while IBM showed off a high-end server in the works that uses eight such chips, yielding 64 cores.
Intel's Nehalem-EX architecture supports up to eight processors and each processor can integrate up to eight cores.
(Credit: Intel)Intel's Nehalem-EX processor, in production later this year and expected to be shipping in high-end server systems by early 2010, will feature up to eight cores inside a single chip that supports 16 threads, according to Boyd Davis, Intel's general manager of the Server Platforms Marketing Group, speaking at a teleconference on Tuesday.
Using threads, Intel essentially doubles the amount of work that can be done on each processing core.
IBM, which participated in the conference, discussed a server currently under development that uses 64 Nehalem-EX cores (eight processors) and can handle 128 threads, according to Alex Yost, vice president IBM BladeCenter. "We're very excited today to be the first to demonstrate Nehalem-EX," Yost said.
Nehalem-EX will also double the memory capacity with up to 16 memory slots per processor socket, and offer four high-bandwidth "QuickPath" Interconnect links.
Intel also said the currently-shipping Nehalem server chip is making market gains. Intel's currently-available Xeon 5500, the first server processor based on Intel's Nehalem architecture, will be "greater than half of shipments" for Intel's high-volume two-processor (aka, "two-socket") server shipments by August, according to Davis.
"Customer acceptance has been quite strong," Boyd said. "From an introduction at the very end of March to representing the majority of our shipments in the market for two-processor servers by the August time frame," he said.
Intel showed off a prototype server that can accommodate four eight-core Nehalem-EX processors.
(Credit: Stephen Shankland/CNET)
Intel's prototype Nehalem-EX server accommodates eight of these memory cards. They'll use relatively conventional DDR3 memory rather than the FB-DIMM technology Intel's current Xeon 7300 systems.
(Credit: Stephen Shankland/CNET)
Brooke Crothers has served as an editor at large at CNET News, an editor at Dow Jones' Asian Wall Street Journal Weekly, and a senior editor at InfoWorld. His CNET blog covers chip technology and computer systems, and how they define the computing experience. He also contributes to The New York Times' Bits and Technology sections. He is a member of the CNET Blog Network and is not an employee of CNET. Disclosure. Follow Brooke on Twitter @mbrookec. 





- by Peter Glaskowsky May 28, 2009 11:52 AM PDT
- Brooke--<br /><br />The two-way multithreading doesn't "essentially double the amount of work that can be done on each processing core." It doubles the number of simultaneously active threads, but the amount of _work_ that gets done only goes up by about 25%, and even that result is only achieved with certain kinds of applications.<br /><br />I'm also not sure about the statement that "Nehalem-EX will also double the memory capacity with up to 16 memory slots per processor socket". The existing Nehalems support up to 9 slots, so "double" certainly isn't the right word here. Nehalem-EX has four memory buses vs. three on current Nehalems, and it looks like Intel is supporting four DIMMs per channel on this chip.<br /><br />I'm curious to know if there's a speed penalty for that configuration, and if Nehalem-EX supports higher-capacity DIMMs than current Nehalems-- if there's just one more address bit coming out, the memory capacity could in fact be more than tripled.<br /><br />This chip is likely to kill off the last of AMD's high-end workstation and server business, leaving those poor guys scraping the bottom of the barrel for the very cheapest servers.
- Like this Reply to this comment
-
(10 Comments)