64-Bit CPUs: Alpha, SPARC, MIPS, and POWER

This is the third and final article (part one and part two articles) on current 64-bit architectures at ExtremeTech: While IA-64 and Hammer battle for mindshare, existing 64-bit designs are working hard. And not standing still. Here’s what AMD and Intel are up against. “Alpha: Not Dead Yet” The upcoming 21364 freshens multiprocessor machines; and some of it lives on in Hammer. “UltraSPARC-III is Still the Classic RISC Chip:” In Sun’s tightly coupled world, software can make up for some hardware deficiencies. “Power 4: 680 Million Transistors Can’t be Wrong:” IBM’s monster looks more like a floor tile than a CPU chip. And it’s 500 watts. In the meantime, Compaq benchmarks a four-way 1GHz Alpha server with Tru64 UNIX. It ran Oracle9i Enterprise Edition for Tru64 UNIX and hit 50,117tpmC (transactions per minute), TheRegister reports.

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