Advanced Micro Devices Inc (AMD)

[Michael Moy]

> Unfortunately, all those optimized multithreaded applications
> of the future won't offer the end user a benefit with single
> core Turion.

All of those optimized multithreaded applications?

You could get the benefit of multithreaded but you'd have to
do a dual-processor Turion system to get it.

> Conversely, at least a 32-bit Yonah will be able to run
> the 32-bit versions of Vista and future application software
> at near the same performance as 64-bit.

Well, it depends on the application and how it is optimized.
x64 is more than just 64-bits. You get the extra 16 registers
too.

I have a particular Javascript application that always runs
considerably faster on x64 than on x32 and there is one test
in particular where there's a pretty big difference. My guess
is that it's the extra registers available moreso than the
64-bits.

And as I posted earlier, there is the issue of address space.
Apple has certainly taken advantage of that in their 64-bit
processors.