[Build Help] Best way to convert this into a more compact desktop?

PCPartPicker part list / Price breakdown by merchant

Type Item Price
CPU Intel Core i7-4790K 4.0GHz Quad-Core Processor $249.99 @ Micro Center
CPU Cooler Corsair H100i 77.0 CFM Liquid CPU Cooler $99.99 @ Best Buy
Motherboard Gigabyte GA-Z97M-D3H Micro ATX LGA1150 Motherboard $108.99 @ Newegg
Memory G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1866 Memory $79.98 @ OutletPC
Memory G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1866 Memory $79.98 @ OutletPC
Storage A-Data Premier Pro SP600 256GB 2.5" Solid State Drive $93.74 @ NCIX US
Storage Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive $79.99 @ Amazon
Case Cooler Master Silencio 352 MicroATX Mini Tower Case $64.84 @ Mwave
Power Supply SeaSonic 750W 80+ Gold Certified Fully-Modular ATX Power Supply $129.99 @ Newegg
Operating System Microsoft Windows 8.1 - 64-bit (OEM) (64-bit) $92.00 @ B&H
Monitor BenQ GW2765HT 60Hz 27.0" Monitor $399.00 @ Amazon
Prices include shipping, taxes, and discounts when available $1478.49
Generated by PCPartPicker 2014-12-28 20:09 EST-0500

This would be a good bet if you wanted to go mATX. Honestly, at this point I think it's useless to be getting a 980/970, as AMD's new 380x/390x are coming out in just a month or two. Even if you're very set on keeping an nVidia build, I'd still wait to see how nVidia drops prices when the new cards come out. The Silencio case is also pretty quiet, and still supports a 240mm radiator in the front of it. You could move the front 120mm fan included to the top mount for it, while keeping the rear 120mm fan where it was originally. I opted to go with 2 8GB kits of RAM as opposed to one 16GB one as the RAM there is CAS 8 1866, and only about $20 or so more expensive than the kit you were considering previously.

If you wanted to keep it ATX, you could always go with the Cooler Master HAF XB EVO ATX Desktop Case, which trades vertical footprint for horizontal footprint.

/r/buildapc Thread