If you don't want to wait, the 770 is certainly a very nice piece of hardware, I'd know, I own one. My reason for upgrading to a 970 is the increased VRAM, the extra performance is just icing on the cake. My 770 can max out everything I've thrown at it so far, but some games are VRAM hungry (heavily modded Skyrim, I'm looking at you!) and my 2GB 770 doesn't satisfy them.