Minimum Req for Dolphin Emulator

[Nimrod EX]

I was just wondering... what kind of abilities does my computer need to run GC roms on a Dolphin emulator, at GOOD speed (not 5 FPS or anything like that...I'm talking about SMOOTH gaming).

Basically the games I wanna play are the Zelda ones...so use those as a "Standard".

What kind of graphic card do I need?
RAM?
Hertz?

and whatever you can think of xD

Thanks in advance guys