"We know that both Xbox One and PlayStation 4 are based on Radeon GCN architecture and we also know that each compute unit is capable of 64 operations per clock," said writer Richard Leadbetter.
"So, again through a process of extrapolation from the drip-feed of hard facts, the make-up of the One's GPU is confirmed - 12 compute units each capable of 64 ops/clock gives us the 768 total revealed by Microsoft and thus, by extension, the 1.2 teraflop graphics core.
"So that's another tick on the Durango leaked spec that has been transposed across to the final Xbox One architecture and the proof we need that PlayStation 4's 18 CU graphics core has 50 per cent more raw power than the GPU in the new Microsoft console."
Leadbetter offered his opinion on why the Xbox One's GPU is weaker than the PlayStation 4.
Microsoft opted for 8GB of DDR3 RAM early in development to support its goal of having a multitasking-rich operating system.
Since a "serious volume of next-gen DDR4" was unavailable, it had to create "complex architecture" to avoid bottlenecks when moving data using DDR3.
Sony didn't focus on a high amount of RAM when first designing the PS4, freeing up more die-space that could yield graphical improvements.
Due to its more straightforward architecture, it meant that Sony could easily upgrade and match the 8GB RAM closer to its announcement.
Announced this week, Xbox One will also feature an 8-core CPU, 500GB hard drive and a Blu-ray drive.
Microsoft has confirmed that while Xbox One won't require an always-on connection, there will be a fee to play used games.
Read more: http://www.digitalspy.co.uk/gaming/news/a483743/ps4-has-50-percent-more-raw-power-in-graphics-than-xbox-one-says-report.html#ixzz2U30yCg96