Choosing the right ddr3 memory

[Bestmaxx]

I just bought an EVGA 790i Ultra motherboard and I can't decide what memory to buy for it.

I do a lot of multitasking and a lot of gaming on 64bit Vista.

Should i go 2x1gb, 4x1gb or 2x2gb? I'm pretty sure i want to get a 1600 do to their price range.

I would like to stick with G-Skill memory from newegg:
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&DEPA=0&Description=g+skill+ddr3&x=0&y=0

*Does the memory have to be sli certified or whatever if i am planning on running SLI? ...Noob question i know

[g0tusprun6]

No it doesn't, SLI certified just means it has been tested in worst case scenario with SLI, meaning theres a slim chance to none you'll have any compatibility problems with SLI. and for the ram i really dont know much man sorry xD

[deathman20]

I personally love my G.Skill DDR2 ram. When I switch to DDR3, G.Skill will be in my system.

[Bestmaxx]

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231167

[Lukee]

I have the same board and run x 4 x 2GB Kingston HyperX 1600