Upgading a little at a time - CPU and Motherboard

[osubuckeyes76]

Here are my current specs. Operating System
Windows 8.1 Pro 64-bit
CPU
AMD FX-6100 10 °C
Zambezi 32nm Technology
RAM
8.00GB Dual-Channel DDR3 @ 800MHz (11-11-11-28)
Motherboard
MSI 760GM-P23(FX) (MS-7641) (CPU1) 20 °C
Graphics
DELL ST2410 (1920x1080@60Hz)
2048MB ATI AMD Radeon R9 200 Series (XFX Pine Group) 23 °C
Storage
465GB Western Digital WDC WD5000AAKX-00ERMA0 ATA Device (SATA) 26 °C
Optical Drives
HL-DT-ST DVDRAM GH24NS95 ATA Device
Audio
Razer Surround Audio Controller

Have a good Graphics Card and Brand New Power supply. Run Dayz and other games Pretty Well. Want to upgrade to Intel i5 or i7 CPU and new Motherboard. What is a good combo that will top my computer out. My budget is about 400 ish?

 

[KenGrinsven]

i7-4770 + MSI B85-G43
Around 400 ish (euro)

OR

i5-4690K + MSI B85-G43
Bit less than 400 ish (euro)