That being the case, here's what we know is inside PS4 development kits—model # DVKT-KS000K—as of January 2013.
PS4 development kit specs
System Memory: 8GB
Video Memory: 2.2 GB
CPU: 4x Dual-Core AMD64 "Bulldozer" (so, 8x cores)
GPU: AMD R10xx Liverpool
Ports: 4x USB 3.0, 2x Ethernet
Audio Output: HDMI & Optical, 2.0, 5.1 & 7.1 channels
Following the news last week that Sony may be ditching the iconic design of the Dualshock controller for its next-gen console, Kotaku claims otherwise stating that dev kits currently support the Sixaxis and DualShock 3 controllers. However, they do claim there will be two new controllers. Currently named the Orbis Development Tool, one controller will apparently feature motion-sensing and a capacitive touchscreen, like the back of PlayStation Vita, as well as a ‘Share’ button. The other input device will be a redesigned Move controller.
One of the most interesting things that Kotaku pulls out of the document is that users will be able to activate “multi-user simultaneous logins” allowing them to access a different account with multiple control pads. For example, users could play a local multiplayer game with four different controllers and four different accounts on one console, allowing each player to unlock the trophies for that game.
The Xbox 720, according to the specs, will be released with a powerful eight-core CPU measuring 1.6GHz. This indicates that the device will be able to handle impressive multitasking capabilities, and allow users to zip through big gaming titles.
However, others have reported that the Sony PlayStation 4 could wipe the floor with the proposed specs of the Xbox 720. Sony is rumored to be planning an AMD A10 APU quad-core unit that would produce more power than the Xbox, and will offer 1.84 teraflops. In comparison the Xbox has been rumored to offer just 1.23 teraflops.
A teraflop is one trillion floating point operations per second. This measure of compute capacity describes how many multiplications can be performed within one second. Computer vendors and computer resource providers typically list the computing performance of their systems in terms of the number of gigaflops (billion floating point operations per second) or teraflops achieved on standard benchmark programs, such as the LINPACK DP, TPP, and HPC benchmarks, and the SPEC integer and floating point benchmarks.
The theoretical peak computing capacity of a system is obtained by multiplying the number of processors by the clock speed of the processor by the number of floating point operations per second that processor type is capable of performing.
"TeraFLOPS" is also sometimes used to indicate one trillion floating point operations per second.