Best CPU + Mobo for GTX 680 SLI? (without bottleneck)

[Jusztin]

My current build:

CPU: Intel i7 930 @2.8Ghz (yes i know, pretty old)
Mobo: Intel DX58SO
GPU(s): Nvidia GTX 680 2k vram (I have another one available for sli)
Ram: Corsair Vengeance 4GB x 2 (8GB total) @ 1600 Mhz
PSU: Antec High Current Pro 1,200 watts 80+ Gold

I'm looking to upgrade my current CPU and Mobo to something that would be a good bang for buck ratio CPU + Mobo while not bottlenecking. Budget would preferably be around $350

 

[Brunostako]

For today standards, any Intel Haswell Core i5 can handle dual GPUs.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4440 3.1GHz Quad-Core Processor ($166.99 @ SuperBiiz)
Motherboard: MSI Z87M GAMING Micro ATX LGA1150 Motherboard ($70.98 @ Newegg)
Total: $237.97
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-01-23 09:35 EST-0500