I'm not quite sure about your build in progress. You say you've started building a gaming rig. The 2400 i5 is a second gen intel i series processor. The z77 chipset on your motherboard indicates that it is for 3rd gen processors.
Video Card:EVGA GeForce GTX 770 2GB Superclocked ACX Video Card (£254.98 @ Dabs) Total: £254.98 (Prices include shipping, taxes, and discounts when available.) (Generated by PCPartPicker 2014-04-27 00:42 BST+0100)
That is a really nice card for the price, I just hope that the OP has done some research on his/her build. I would hate to see someone get a second gen processor and a 3rd gen mobo.