better performance with 32 bit ! why?

[lst_hoe02 at kwsoft.de]

Zitat von iharrathi.ext at orange-ftgroup.com:

> on server1(64 bit) i have 2 Intel E5310 quad-core 1.6Ghz and on  
> server2(32 bit) i have 2 Intel Xeon dual-core 2.33Ghz.
> means 8*1.6 Ghz on server1 and 4*2.33 on server2.
>
> 8*1.6 is better and faster than 4*2.33, no?

This would only apply for applications with ideal scalability. Most  
applications are limited by some serial code paths which only benefits  
from higher clock speed. So no, you cannot simply add core*clockspeed  
to compare. For more on this topic see for example  
http://en.wikipedia.org/wiki/Amdahl%27s_law

Regards

Andreas