But problem is, I cant buy all of these in one go. I'm planning to buy the mobo first so
1. Can I put all the components of my stock X1800 to that mobo?
2. Do all of the components that I want to buy compatible?
3. If I add another HD6850, will 560watts psu be enough?
I'm new in this, sorry. Also, I'm on a tight budget, but please if you can make my build more solid please help.
you won't be able to use your E5400 processor, it uses a different CPU socket. You might be able to reuse your old hard drives and optical drive, it depends on the connectors they use. if IDE, then no, if SATA, yes.