zborgerd, you mean allot like say a Geforce 4 Ti4600 (equivalent XGPU version, so including north bridge, etc.) with 256MB's (or even 512) of 400Mhz DDR (800Mhz "equivalent") serving the UMA, a 1.2Ghz PIII (or a 2Ghz P4, I have no idea how close to the actual Xbox they're sticking), etc, etc? Running at arcade resolutions and being programmed like an arcade machine, I think that would give Naomi 2 a run for its money, and with more versatility and functionality to boot.
There was rumor the GF4 was potentially multi-chip capable, but I'm assuming that's not the case as there's been no mention whatsoever of it recently. However if it was...
The thing in the arcade market is that money, heat, and allot of other stuff are so much less of a concern. Granted there are others like reliability, durability, what have you, but the point is that given a good chunk of change you could build some kick ass hardware with an evolved version of the XBox architecture. And I find it hard to believe that at least in most situations it couldn't compete with and surpass Naomi 2. Hell, they're making the damn thing after all. Surely there's a good reason?
Maybe Sonic has info on what the *actual* specs are? I'm totally speculating, based on a "cost no object" kind of situation (which to a degree the arcade market is, at least compared to the console market).
- JavaJones