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  • Aug 14, 2026, 9:46 AM

    @david_chisnall I seem to remember the P4 design was also intended for use with RAMBUS memory which got rejected by the rest of the industry. Intel were reluctant to go DDR I think?

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  • Aug 14, 2026, 10:23 AM

    @kbm0 Yes, Intel thought RAMBUS memory was the future. That wasn't really a problem for performance, but it was a big problem for cost early on. RAMBUS memory cost a lot more. I remember someone I knew buying a P4 machine and boasting about the clock speed. My Athlon at 75% of the clock speed had twice as much RAM, cost less, and outperformed it in every benchmark we ran.

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