The Xbox One and PS4 have very similar hardware specs. When it comes to the GPUs, however, there's a clear-cut leader: the GPU in the PS4 has 50% higher peak performance than the GPU in the Xbox One. As you probably know, though, peak performance isn't an indicator of real-world frame rate improvements or image quality -- that's why Digital Foundry set out to replicate the Xbox One and PS4, using PC hardware, to see whether the PS4 actually has the edge.