Catzilla is an OpenGL 4.0 and DirectX 9/11 benchmark for Windows that incorporates a parallel graphics engine that can take advantage of multi-core CPUs.
The benchmarks consist of a literal giant cat fight scene, which stresses both the CPU and GPU, and a set of smaller benchmarks to test CPU rigid body physics, GPU smoke simulation, fur rendering, and liquid simulations.
More information can be found here.
The i7 4770K and GTX 770 prove to be a lovely match in the Catzilla benchmark, scoring 9570 points in the CPU+GPU test.
Expensive id a Pro!
Where did you buy your parts from. £1499 seems a great deal