We already know the Xbox CPU is 10% faster than the PS4, but the Kinect eats into the power by up to 10% (and also presumably eats into the main RAM as well)... So people are still calling it so close there is not much difference... but.
Everyone forgets the PS4 has a separate ARM chip with it's own DDR3 memory which deals with video and audio decoding and encoding as well as a few minor background tasks (some of which are not finished).
My question is, both the PS4 and Xbox One encode their video outputs to share/record to hard drive and the internet. The PS4 almost does this for free using the ARM chip plus it's own dedicated RAM so takes no performance hit on the main processor or GDDR5 (except reading the frame buffer?).
Hows does the Xbox One record it's video output, I assume it has it's own hardware video encoder somewhere but nobody has mentioned another set of RAM modules. So how much of a hit does the DDR3 take (I assume it keep the processing / video data somewhere, the ESRAM would be too small) and how much RAM is set aside for this? And does it touch the CPU in any way?
Would be interesting to see what other stuff Sony does with the ARM chip. I would also love to know how the ARM chip accesses the main memory to copy the frame buffer and if it has direct access to the file system.
Also do you think Sony would ever let people use the ARM chip to run unsigned code, do the devs even have direct access to the ARM chip? There is such a lack of information about it.