Pretty much ANY PC will run SA(and VC and III for that matter), as I used to run the game perfectly fine(and played many of Chain Game turns) on a laptop with an AMD Sempron processor @798MHZ, 256MB DDR Ram(1GB now), a VIA/SIS video card w/32MB Vram and XP Home SP2...So, if the game runs fine on that laptop, that pretty much mean just about any PC should have no problems with it..?
All you have to do, is install the game, set everything to the lowest settings and go from there...the ONLY tried and true method to determine if a game works or not, as that is the common sense approach in my opinion. No offence..