Alright, that helps a lot. Even though I think the difference wont be night and day, think you'd be better off going i7 4770k and amd hd 290.
My proposed build, well over your $1400 mark, but this would be ideal.
To save your $1400, you can easily drop the ssd and wd black and get what you need. Case I just picked what I have and love, but its all personal opinion and you could def save on getting a cheaper one. I picked good and speedy ram, which you should have 16gb of but you can easily drop some price on that as well. Cooling, you could get away with a $30 coolermaster hyper 212 evo, but the h100i will give you higher overclock cooling capability.
I just threw this together using ** components that you would need, and filled in the rest with ideal. Easily swap out less than ideal for cheaper/different and wont be make or break. I put more **** by the most important parts and the lower * are easily changed while not taking huge performance hit.
PCPartPicker part list:
http://pcpartpicker.com/p/JwQ7pg
Price breakdown by merchant: http://pcpartpicker.com/p/JwQ7pg/by_merchant/
Benchmarks: http://pcpartpicker.com/p/JwQ7pg/benchmarks/
****CPU: Intel Core i7-4770K 3.5GHz Quad-Core Processor ($333.97 @ OutletPC)
**CPU Cooler: Corsair H100i 77.0 CFM Liquid CPU Cooler ($89.99 @ NCIX US)
***Motherboard: Asus Z87-Pro (V Edition) ATX LGA1150 Motherboard ($157.50 @ Newegg)
**/*Memory: Corsair Vengeance Pro 16GB (2 x 8GB) DDR3-1866 Memory ($169.99 @ Newegg)
**Storage: Samsung 840 EVO 250GB 2.5" Solid State Drive ($134.99 @ Amazon)
*Storage: Western Digital BLACK SERIES 3TB 3.5" 7200RPM Internal Hard Drive ($174.99 @ Newegg)
****Video Card: XFX Radeon R9 290 4GB Double Dissipation Video Card ($359.99 @ NCIX US)
*Case: Corsair Air 540 ATX Desktop Case ($119.99 @ Newegg)
****Power Supply: EVGA SuperNOVA 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($84.98 @ OutletPC)
*Optical Drive: Asus DRW-24F1ST DVD/CD Writer ($19.98 @ OutletPC)
*Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($89.98 @ OutletPC)
Total: $1736.35
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-06-06 11:51 EDT-0400)
The ram you could save like $40, but the corsair is some good ram.
Cooler, depending if you want to overclock or not, bundled one is fine for stock, $30 coolermaster evo is good for decent overclock, h100i is great for great overclock. So if you stay stock or go coolermaster drop $50-90 off total price.
SSD/HHD, fast for boot, fast, large, and very reliable for data, but drop to single 1tb for $50ish, and drop like $250-300 of my price.
Case, is great, but can easily find a good one for $50-80. or swap it out for anything.
WIndows, 8 or 7, up to you.
But if you drop ssd/hhd and get a 1tb, drop the cpu cooler, your in your $1400 budget.
And when you have more $ down the road, easily drop in ssd and/or another hhd, or add the cooler. But don't need these now.