3Dmark11 is the latest 3D based benchmarking tool from Futuremark; this is the benchmark of 3D benchmarks. While it is primarily a GPU performance comparison tool, a graphics card can only perform to its fullets capacity if it’s backed up by a strong CPU.
CustomPC Test Suite
While it’s a few years old at this point, the CustomPC benchmark suite is nice and easy to use and it offers some good insight into CPU and system performance across several different tests. These include a Handbrake video encoding, GIMP photo manipulation and multitasking.