Which CPU should I use

Hello,
our company want to buy new computers for the developers.
We have to use Windows XP as our OS because of third party products.
We develop J2SE + J2EE.
So my question:
Which CPU should we use?
I searched at google but didn't found any usefull sides about benchmarking an J2SE VM or J2EE VM.
Intel or AMD?
Are there some issues to be regarded?
Is the behavior of the VM different if you use an Intel or an AMD? (X86)
Our AppServer is JBoss 3.2.3.
Has Intel ore AMD some magic improvements for the SUN Java VM?
Any answer would be appreciated.
Thanks,
Oliver

Olli_ger,
Thanks for asking. To add more to the question, what about dual- and
multi-processors, such as Opteron 2xx and 8xx processors?
That is, can, and to what extent, does the Java compiler and the JVM
utilize multi-processors? And how is this done? Threads parceled out?
Using what algorithms? Are there "best practices" for writing code
that can exploit these chips?
Given the recent emergence of dual-core processors from both AMD and
Intel I would think Sun would have a white paper on this, but I've not
been able to find anything.
As I'm about to build a new system, and am looking at a dual processor
board that could take two dual-core chips, I'd really like to know.
Thanks again for opening the issue.
-BC

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