Xbox 720 looks like it will be featuring some technology that is extremely capable, and the specs of the system have also been deeply described by a new report.
According to a report from VGLeaks on Thursday, Xbox 720’s CPU is apparently structured as two modules.
One of the modules has four x64 cores, each running a single thread at 1.6 GHz. Each core contains a 32 KB instruction cache (I-cache) and a 32 KB data cache (D-cache), and the 4 cores in each module share a 2 MB level 2 (L2) cache. In total, the modules have 8 hardware threads and 4 MB of L2.
The four cores of the CPU supposedly communicate with the module’s L2 via the L2 Interface (L2I), and with the other module and the rest of the system (including main RAM) through the Core Communication Interface (CCI) and the North Bridge.
Caches were discussed as the 4 MB of L2 cache is split into two parts, one in each module. On an L2 miss from one module, the hardware makes sure the necessary line is there in the other module—either in its L2 only, or any of its cores’ L1 caches.
In addition, checking and retrieving data from the other module’s caches is much more efficient than fetching it from main memory, however; this is still much slower than getting it from the local L1 or L2.
Other information about the system points to the Xbox 720 featuring an eight-core CPU from AMD that will be running at the speed of 1.6GHz, much like its foe from Sony will be featuring.
These cores are made for the beginning laptop and tablet device and are part of AMD’s new PC tech called “Jaguar.”
The two setups of memory work parallel to each other, and the allegation of the system’s bandwidth, 170GB/s throughput, seems to be a likely outcome.
In addition, the set-up from with this system’s RAM is that the ESRAM is not structured like the Xbox 360, instead, it is connected with the northbridge (the interconnect between all major internal components), so it can provide access to additional components along with the graphics core.
Also, the Kinect looks to have its own input, which could help get rid of some problems that arose with the Xbox 360’s version.
The suggestion of an input basically means the Kinect will be a separate device and will not be part of the Xbox 720 in its structure.
A large hard drive has been named, much like other reports, with the system featuring about 500GB minimum. It will also allegedly have a 6x Blu-Ray disc drive, which supports up to 50GB dual-layer discs. Rumors of no optical drives are pretty crushed.
Finally, networking will work with a fast gigabit Ethernet port, with both WiFi and WiFi Direct support.