Substance Engine is an algorithmic texture generation middleware and according to benchmarks published on GamingBolt the PS4 CPU is faster than the Xbox One: http://gamingbolt.com/substance-engine-increases-ps4-xbox-one-texture-generation-speed-to-14-mbs-12-mbs-respectively Both systems have 8 core Jaguar based CPUs from AMD, but prior to release Microsoft was promoting the fact that their CPU was clocked higher at 1.75Ghz. The benchmarks here imply the PS4 CPU is actually running at 2Ghz in order to produce 14 MB/s versus 12 MB/s for the Xbox One. The other possibility is that these figures are for the whole CPU and not a single core as labelled. In that case it would imply PS4 is using 7 cores at 1.75Ghz versus 6 cores at the same frequency.Since this tech is purely algorithmic on CPU and not boiund by bandwidth we can't look to the PS4's GPU or GDDR5 to explain the difference. The only logical conclusion is the PS4 has a faster CPU, despite Microsoft's protestations to the contrary.Sony has never officially disclosed the PS4's CPU clockspeed.