[CentOS] CentOS 6.x desktop specs: minimum requirements

Hi,

I often have to deal with relatively obsolete hardware in schools, 
public libraries, small town halls, etc. I still have a handful of 
CentOS 5.x installations around for these, but I wonder what CentOS 6.x 
desktop specs are, e. g. the minimum requirements (in terms of CPU and 
RAM) to reasonably run it. Will a battered first-generation P-IV with 
512 MB RAM be sufficient? How much RAM does 6.x's graphical installer 
require to even start? Or is it better to opt for CentOS 5.x on this 
sort of dinosaur?

Cheers,

Niki
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