The sound emulation of the game requires a more powerful PC, you could get an earlier version of MAME, although you might need to then look for matching ROMs, or you'll have to disable sound.
IIRC the same soundboard is used in several pinball games...
Here's the information on the hardware for Mortal Kombat 2.
Here's the information on the hardware for Mortal Kombat 3.
Here's the information on the hardware for Ultimate Mortal Kombat3.
system 16 the best site for hardware information regarding arcade games.
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-Member of the Windows XP "Sith" with dreams of galactic conquest,
er no, I mean dreams of buying an XBOX 360
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Member of the Sith XP/XBOX gaming club.
$95 for an XBOX, $9.99 for a copy of Halo 2...Being able to play Halo 2 without buying Vista, priceless! Vista,
what OS do you not want to screw up your PC! 
'k Wii will Wii will rock you!
