You shouldn't have any problems getting integrated GPU on CPU (i7 2600K) working on that motherboard. FYI, Z77 chipset was release along with Ivy Bridge family. The only problem is that PCIe slots that are spec to operate at 3.0 mode will only operate at 2.0 mode since Sandy Bridge's integrated PCIe controller operates at 2.0 mode. Where as in Ivy Bridges chips have an updated PCIe controller that runs at 3.0 mode.
Ivy Bridge i5-3570K@4.0Ghz, Gigabyte Z77X-UD3H, 2x4GiB of PC3-12800, Sapphire RX Vega 64, Corsair CX-600 and Fractal Refined R4 (W). Kentsfield Q6600@3Ghz, HD 4850 2x2GiB PC2-6400, Gigabyte EP45-DS4P, OCZ Modstream 700W, and PC-7B.