Quote - I was in another thread asking this question - and bruno said I should ask louguet

"We have 5 x celerons, 1 x celeron laptop, 2 x pentium 4, 1 x Pentium 4HT, 1 x G5 MAC (which would be the main computer with Vue software ) - we have other PCs networked around the building, but not in our office.

Is this going to be an effective render farm for animation at good quality?"

It depends on your definition of 'effective' :) The Celerons are definitively no monster machines. Well I think you'll need to do a few tests yourself to evaluate : render a simple anim on your fastest machine, and then render the same anim with the entire farm to compare. And don't forget that you'll need an additional licence to use more than 5 computers for network rendering.