Ivy Bridge Die Layout Estimated
Hiroshige Goto, contributor for PC Watch that is known for detailed schematics of dies estimated the layout of Ivy Bridge silicon. Ivy Bridge is Intel's brand new multi-core processor silicon built on its new 22 nanometer silicon fabrication process. The four core silicon, which four configurations can be carved, will be built into packages that are pin-compatible with today's Sandy Bridge processors. The die area of Ivy Bridge is 160 mm˛, it has a total transistor count of 1.48 billion, compared to the Sandy Bridge silicon, which has 1.16 billion transistors crammed into a die 216 mm˛ in area, built on the 32 nm process.
Ivy Bridge has essentially the same layout as Sandy Bridge. The central portion of the die has four x86-64 cores with 256 KB dedicated L2 cache each, and a shared 8 MB L3 cache, while either sides of the central portion has the system agent and the graphics core. All components are bound by a ring-bus, that transports tagged data between the four CPU cores, the graphics core, the L3 cache, and the system agent, which has interfaces for the dual-channel DDR3 integrated memory controller, the PCI-Express controller, and the DMI chipset bus.
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