Which have better performance Two 2GB RAM sticks or One 4GB RAM stick? [closed]
2 sticks in general because you get dual channeling. But more memory will always beat out dual channel for general workloads.
Buy the single stick of the largest possible (8GB currently) and upgrade later for even more performance to a second stick so you can get the dual channel feature.
How 'bout 2 4GB sticks? It's not like it's expensive (<$50 right now on newegg).
Two sticks are nearly always better, as you'll be able to get dual channel mode.