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Technology Stocks : Advanced Micro Devices - Moderated (AMD) -- Ignore unavailable to you. Want to Upgrade?

To: dale_laroy who wrote (72974)	3/2/2002 7:27:00 PM
From: Gopher Broke	Respond to of 275872

The rumor is that Prescott will have x86-64 mode built in, but probably disabled. Building in x86-64 mode would add less than 5% to Prescott's die size. That rumour has to be complete nonsense. You can't just take a 32 bit core and tweak it run in 64 bit mode. Doubling the width of the registers, data paths, ALU etc involves fundamental changes to the core. If Prescott has true x86-64 then it is no longer a P4 core, which is not what I have read about Yamhill. And if Prescott does turn out to be a completely new core, I would not hold my breath waiting for Intel to release it. IMO the best Intel can achieve with Prescott is to take the P4 core and stick an x86-64 emulator on the chip. Which means that x86-64 will be "supported" in Prescott in much the same way as x86 is in Itanium.