SAN FRANCISCO (Reuters) - IBM (NYSE:IBM), the world's largest technology services company, on Tuesday is announcing new server computers giving businesses access to computing power typically used by universities and large corporations.

The five systems, set to be unveiled at a New York briefing on Tuesday, use microprocessors from Advanced Micro Devices Inc. (NYSE:AMD), which has been making inroads against industry leader Intel Corp. (Nasdaq:INTC)

The systems promise more computing power but are more energy-efficient and generate less heat than earlier machines. They also cost less than comparable high-performance systems, IBM said.

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