ZOTAC GEFORCE GTX 780 Zotac GeForce GTX 780 is GK110 clocked at 1006Mhz with 3GB GDDR5 clocked at 7000Mhz. Zotac GeForce GTX 780 is 256Bit with 2304 shaders with directx 11. Gigabyte GeForce GTX 770 is GK104 clocked at 11137Mhz with 4GB GDDR5 clocked at 7010Mhz. Gigabyte GeForce GTX 770 is 256Bit with 1536 shaders with directx 11. Benchmarks are Battlefield 4, Bioshock Infinite, Dirt 3, Farcry 3, Hitman Absolution, Max Payne 3, Resident Evil 6 and Tomb Raider 3 with AMD 8350 CPU."