The GPU dont really matters, since you either can lower the grafic details or just accept the low frames. This wont slow down the game SIM Speed.
4 GB ram should be enough, but maybe dont try to run another game in the background.
Just the CPU seems a bit slow. Even if the Clock isnt really high, the missing L3 Cache will hurt you on this even more.
You perhaps should use Core Maximizer (google it), since FA normally don't supports Multi Cores.
However, even if Core Maximizer don't really increase the SIM Speed, as experience shows, it runs a bit smoother. Plus spreading the calculation to the other cores maybe helps you more than others, since this way you can access the huge ammont of 512 KByte L2 Cache of the other Cores.
I would say, just give it a shoot. Maybe start with some 2v2 and after a while take a look at the SIM Speeds (open console --> "ren_ShowNetworkstats"
So you can compare yours to them of the others. This way you might get a "feeling" for what your CPU can take.
Other way would be to use (Live) replays. Check the Networkstats once again. As soon as you drop below 0, you would slow down the game.
mclovinballs wrote:I can run 1v1 fine but how much would be too much for my computer.
Its rather a question about how many units are around than how much players are in the game. (If you have a decent internet connection, ofc)
For example: If you go for a 4v4 on Desert Arena, everything should be fine. But if you go for a 4v4 on Setons, the other players will probably just flame you to death