AMD64 RAM usage

From: Hank Barta (hbarta_at_gmail.com)
Date: 11/26/04 

Date: Fri, 26 Nov 2004 02:36:18 GMT

    What is RAM usage on an AMD64 going to be like compared to a 32 bit
    (ia32) processor? I'm guessing that with int variables 64 bits wide
    a typical data section could approach twice the size. Floating point
    and character data would likely be about the same. Pointers would
    likewise be 64 bit vs. 32 bit.

    How about instructions? If 32 bit instructions map one for one
    to 64 bit instructions, the instruction space requirements would
    double. But I don;t know what the typical instruction size is or
    what the typical mix of data space vs. instruction space is. And
    I'm sure that varies all over the place depending on the app.

    thanks,
    hank