Hee hee.
Why is it that all the crap, "Hotrod/X-Arcade bolted onto a driving cab/dart machine/photo booth" Mame cabinets have brand spanking new "gaming" computers in them.
Then at the same time all the good looking Mame conversions have Pentium 2 or 3 systems?
Oh wait, I know why, the people who build the good looking machines know what they are doing, and the people who build the crap just throw money at it and hope that it will come out looking good.