[linux-audio-dev] Athlon64 .. performance boost ?

[Jussi Laako]

On Thu, 2003-10-16 at 19:19, Robert Jonsson wrote:

> weapon the compiler can use to optimize code. Athlon64 remedies this by 
> doubling the size (32->64) and the amount (8->16) of all integer registers. 
> SSE also have double the amount of registers which (i think) benefits 
> floating point work (if the compiler supports it).

With Opteron/Athlon64 it's _very_ important to use SSE/3DNow optimized
asm code. There are _major_ speed differences between the code generated
by C/C++ compilers and handwritten assembly code.

For some DSP routines the speed difference seems to be about 10x.


-- 
Jussi Laako <jussi.laako at pp.inet.fi>