On Monday 21 February 2005 14:44, Robert Synnott wrote:
> There's a fair few apps that will see a small benefit if running on a
> 64 bit operating system, and 64bit themselves. Beyond this, there
> were some improvements made to the chips beyond 64bitness; think they
> may have bigger caches or something.
more registers. More Registers, MORE REGISTERS. While all modern
processors do register renaming and whatnot, having so few possible
register labels to begin with really made x86 asm royally suck. So the
x86_64 is something of an anomaly: 64-bit code really is typically
faster than 32-bit, because AMD took the opportunity to fix some
glaring inadequacies of the x86 design compared to, oh, a freaking
68000 (not that I'm a bitter ex-Ami user, oh no).
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