Dozens of server manufacturers Tuesday announced plans to incorporate Intel\u2019s new dual-core 64-bit Xeon 7100 processor, dubbed "Tulsa," into upcoming servers.Hewlett-Packard, Dell and Unisys are among 40 system manufacturers designing Tulsa into their new server offerings. Tulsa is Intel\u2019s response to Advanced Micro Devices\u2019 (AMD) Opteron 800-series processors, the most recent challenger to Intel\u2019s dominance in the server processor market.HP Tuesday announced that Tulsa will go into upgraded versions of its x86 platform ProLiant 500 series servers. The ProLiant DL580 rack-mounted server carries a list price of US$6,649, while the ML570 G4 tower server starts at $5,799. HP says that offering ProLiants with the Tulsa chip will strengthen its market share lead in the x86 processor segment, which stood at 34.5 percent in the second quarter, according to IDC research.\n\n\n\n\n\n\n\n\n\nTulsa 7100 ProcessorDell is offering Tulsa in new versions of its PowerEdge 6800 and 6850 servers, starting at a list price of $6,900. Dell reports performance gains of up to 123 percent and performance per watt gains of up to 129 percent, compared to servers running Intel\u2019s "Paxville-MP" chip line, the predecessor to Tulsa.Unisys said it plans to use Tulsa in its next-generation ES7000 sometime in the fourth quarter, and later in its ClearPath server lines. Unisys does not use AMD chips, said Mark Feverston, director of enterprise servers and storage at Unisys."We know our market; we know their buying patterns. They\u2019re happy with Intel," Feverston said.But Intel lost significant market share to customers who weren\u2019t happy. In April, AMD cited Mercury Research numbers that showed its share of the x86 processor market grew to 22 percent in June from just 7 percent in June 2005."It certainly added to our sense of urgency," said Tom Kilroy, vice president of Intel\u2019s digital enterprise group. But he also said Intel launched Tulsa to meet customer demand for processors that increased performance while reducing energy consumption and enabling virtualization.Tulsa, based on a 65-nanometer chip design, is built to run on servers with four or more processors, Intel said. Tulsa\u2019s cores run 13 percent faster than Paxville, while using 20 percent to 40 percent fewer watts, the company said. Intel builds each Tulsa chip by combining two 3.4GHz Pentium 4 cores on a single die, and will deliver both 150-watt and 95-watt versions. Tulsa supports four threads per processor and has a 16MB cache, compared to a 4MB cache in Intel\u2019s Woodcrest processor, another member of the Xeon family introduced in June.Intel will use the Tulsa chip to fill a price and performance gap in its line between the "Woodcrest" Xeon 5100 and the "Montecito" Dual-Core Itanium 2, said Shane Rau, an analyst with IDC."With Itanium, users are looking primarily at performance, and with Woodcrest they are looking at price. Something like [Tulsa] will go right down the middle," he said.\n\n-Robert Mullins, IDG News Service (San Francisco Bureau)(Ben Ames, also of the IDG News Service, Boston, contributed to this report.)\n\nRelated Link:\n\nIntel to Unveil \u2018Tulsa\u2019 Server Chip Aug. 29Check out our CIO News Alerts and Tech Informer pages for more updated news coverage.