Looking for advice on a cpu upgrade

Computer Type: PC/Desktop
System Manufacturer/Model Number: CUSTOM BUILD
OS: Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
CPU: Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz
Motherboard: ASUSTeK COMPUTER INC. MAXIMUS VI HERO
Memory: 16.00 GB
Graphics Card: Intel(R) HD Graphics 4600
Sound Card: sound blaster x-fi titanium hd
Monitor(s) Displays: acer G246HL
Screen Resolution: 1920 x 1080 x 32 bits (4294967296 colors) @ 60 Hz
Keyboard: hp multimedia keyboard to be changed
Mouse: LOGITECH G500
PSU: 450 watt antec strictly power psu
Case: rosewill challanger
Cooling: 3 case one cpu fan
Hard Drives: (1) 119GB SAMSUNG SSD PM830 2. SCSI Disk Device (2) SanDisk SDSSDRC032G SCSI Disk Device -recovery method 1 (3) SanDisk Cruzer USB Device -recovery method 2
Internet Speed: 35mbps down 3 mbps up
Browser: CHROME canary x64 dev
Antivirus: kaspersky complete

Computer Type: PC/Desktop
System Manufacturer/Model Number: CoreI7-6700K MrFingerIII Special Builds
OS: Windows 10 Home Premium 64bit sp1
CPU: Intel I7-6700K @ 4.6 Ghz 1.344 volts everyday OC
Motherboard: Asrock Fatality K6 Z170 Socket 1151
Memory: 32GB G-Skill TridentZ 3200mhz 16-18-18-38 DDR4
Graphics Card: Sli Gigabyte Windforce GTX 980 G1
Sound Card: AC97 Creative Rage Tactic 3D Headphones Bluetooth
Monitor(s) Displays: 27" Asus ROG Swift PG278Q G-Sync 48" Vizio Smart HD TV
Screen Resolution: 2560x1440p 27"- 48" Currently Gaming at 2560x1440p Res 2K
Keyboard: Logitech wireless keyboard
Mouse: Logitech wireless mouse
PSU: HX1050w Corsair Silver 80plus certified crosfire/sli
Case: Enthod Pro Full Tower
Cooling: Corsair H110i GT 280 mm High Performance WaterBlock
Hard Drives: 250GB Samsung Evo840SSD Seagate baracuda 500 GB WD Mybook 500Gb 1TB Seagate Barracuda
Internet Speed: Cox Cable 100+ mb
Browser: IE-10, Chrome, Opera
Antivirus: WebRoot Spysweeper with Antivirus
Other Info: My Other Rig is a AMD FX8320E @4.6Ghz 16GB Ballistic Sport Ram Mobo Asrock Fatality 990FX 120GB OCZ SSD 1TB Seagate Barracuda Corsair H75 Cooling PSU Corsair CX750 GPU GTX Gigabyte 970G1