> Any opinions on if this would be a suitable PC for hooking up a ArcadeVGA card and
> using it on my Cyberlead cabinet to play mostly MAME but looking to the future to
> play maybe other more taxing Emulators?
As always, it depends what your ambitions are as far as games to play. That system will work fine for classics and CPS-2 and NeoGeo in MAME. It'll be borderline for early 3D games (Tekken, Tekken 2, Soul Calibur, that stuff), and you won't be wanting to play NFL Blitz or CarnEvil on it. For non-MAME, it'll run the less taxing games OK in Supermodel (so Scud Race is OK, Star Wars Trilogy not), and it should generally be OK for Makaron/Demul and the Model 2 Emulator.
Also, please check the ROM labels on your Cyberlead to make sure it's not a version we don't have in MAME