Suggestions for GPU and PSU?

It's a work in process, a project for a friend and I which will end up being his build in the end. He's paying the expenses, so the limit is 1500$.                                                                                                                                                                            

I prefer NVIDIA, Intel and ASUS.                                                                                                                                                      

Would you recommend maybe a cheaper GPU and do SLI? Do you get more performance from your memory from 1 x 8GB stick than 2x 4GB stick? Any suggestions are welcome! Thanks you!

you need to re do the link because i have nothing to look at from the sight....

The link doesn't work. But without that I can already tell you that you should always get at least two sticks of RAM. Most modern chipsets/CPU's/motherboard support dual channel (or more) memory, and you really should take the benefit of that. 

ture to that the spread of ram works far more better than 1....

I can tell you that 16GB of RAM is very doable for $1500v