The reason you are not getting any answers is that not many have experimented with "less is more"
I have a core running on a PIV 1.7GHz 768MB RAM 20GB HDD and external Lacie 500GB.
But there's no video capture devices in it, and I am not sure how well that would work...
The core is allready stressed with 4 other media locations.
but that works for non HD, no capture and one of the MDs only being audio (a PII 350MHz 384MB RAM)
I plan on replacing the core later, making the current core an MD only.
I suggest next time you ask on a forum about anything you doublecheck the spelling in your heading, as Teedge77 pointed out it's far from english (as you claim it to be). I suggest you get Mythdora instead and ask the same question with the same spelling over there and see if you get any help...