A whole build? Well, then I need to ask a few questions...
- What's your budget?
- In what resolution are you going to play?
- Do you expect to play most games at ultra or minimum/medium will suffice for you?
- Where are you from?
I assumed you were gonna build a CPU instead of buying one...
I think GPU and RAM are mor important. If you have a decent CPU, of course.
I would say GPU > RAM > CPU. Aalways with a decent level of each, you can't expect a 980Ti to perform miracles if you have 1GB RAM and a Pentium 2 :P