OP, the bottom $1070 build is nice, and really just about what you want, but doesn't include an OS, so if you do need one, it's really ~$1170 with shipping, because you have to figure on $100 for a copy of Windows.
Here's what I'd do to get it in budget if that's too much:
-ditch the CPU cooler; now it's $1140 (you can buy one later)
-Use this mobo: http://www.newegg.co...N82E16813157230
You don't need Z68, it just enables the onboard video, and while PCIE 3.0 is nice on paper, GPUs aren't growing in power very quickly anymore, and we're really nowhere near saturating the PCIE 2.0 bus with single-GPU cards (we'll see if the 7990 and 690 meaningfully do, but even there I have my doubts).
~So now you're down to ~$1115. (shipping charges are reduced with the mobo change, so some difference comes from there). That sits you closer to your budget.
You could always switch to something like this for RAM as well: http://www.newegg.co...N82E16820231422
The entire difference is the looks of the heatspreader; we're not coming close to saturating dual-channel DDR3 RAM, not even lower-end DDR3-1333. On the other hand, it's only $9 in savings.
Even if you don't need an OS ("core components"?), then that would get you down to like $1006, which would free up enough money to include a small SSD, like this one: http://www.newegg.co...N82E16820226290
That would put you to about $1100 even, and net you one of the most worthwhile upgrades you can get (you'll only be able to fit your three or four most important games on a 90GB SSD, but with that and the OS/basic programs, it's MORE than worth it)
Edited by Catamount, 29 March 2012 - 06:39 AM.