> The problem is I can't afford a Core2Duo atm, and I'm getting the Pentium 3 for free. > At most I could spend around €50 on a Pentium 4 with 3.4GHz but that's about it.
I'm sure you can find a better PC than something in the triple figure megahertz range from circa 1998. I found a 3.0GHz Pentium 4 in the hard rubbish two years ago (roadside hard waste collection, where people dump unwanted fridges, washing machines, lawn mowers etc. for the council to dispose of/recycle), and all that was wrong with it was a blown power supply. The same PC has been working perfectly ever since.
For the record though, Mortal Kombat 1 doesn't even run at full speed on my 2.8GHz Celeron, let alone a PC with an earlier generation of processor which is also less than a quarter of the clock speed.