That's a great setup for an audio computer. You are missing a video card though, unless you plan on using on-board. (Which is probably fine for one monitor.)
My only possible question would be whether you want to look for a motherboard with Thunderbolt to more 'future-proof' it, but that's more down to personal preference.
With Reaper, you can run any kind of hardware and it'll be sufficient. I'm exaggerating a little obviously, but I seriously doubt there are new PC parts available where Reaper won't run great.
__________________ Genie, Child of God, my instrumental post-rock band, I play keyboards. We just recorded an album with Reaper! Feelings Eraser, my electro project.
Well, the only thing I'd say is, why are you getting a full ATX motherboard and case? What are the 2 PCI slots for? They aren't native PCI slots anyway, and so aren't much good for use with PCI audio interfaces.
Well, the only thing I'd say is, why are you getting a full ATX motherboard and case? What are the 2 PCI slots for? They aren't native PCI slots anyway, and so aren't much good for use with PCI audio interfaces.