As Per GTA forums you need 4 GB RAM to run the game on high settings.
I only have 2 GB RAM and have pre-ordered from predatorvj.Lets see if this is true , then I'll have to buy more RAM
Source :-
GTAForums.com -> German Magazine tests the PC Version
I only have 2 GB RAM and have pre-ordered from predatorvj.Lets see if this is true , then I'll have to buy more RAM
Source :-
GTAForums.com -> German Magazine tests the PC Version