AMD Zambezi core

AMD Zambezi core and the first FX-Series microprocessors were launched in October 2011. Zambezi is based on Bulldozer microarchitecture, and it is manufactured on 32nm process. Internally, the core is organized as 2, 3, or 4 Bulldozer modules, coupled with shared 8 MB level 3 cache and on-chip DDR3 memory controller. Each Bulldozer module integrates two CPU cores, that share some circuitry, such as instruction fetch and decode logic, L1 instruction cache, L2 cache, and Floating-Point Unit. The core incorporates all technologies, found in AMD K10 microarchitecture, and adds SSE4.1, SSE4.2, AES and AVX extensions to instruction set. Currently (January 2012), Zambezi core is utilized only in desktop processors.

New core features:

• Up to 8 CPU cores (4 Bulldozer modules) on a die.
• Support for SSE4, AES and AVX instructions.
• Improved Turbo Core technology.
• Larger L2 and L3 caches.
• Memory support up to DDR3-1866.
• 0.032 micron technology.

FX-Series processors with Zambezi core can be identified by:

• Part number: part numbers start with "FD", and end with "GU" for OEM parts, or "GUSBX" / "GUBOX" for boxed microprocessors.
  An example: FD8120FRW8KGU.
• CPU ID: CPU identification number of Zambezi CPUs is 600F12.

The following table lists all AMD families with Zambezi core:

	FX-Series
Manufacturing technology	0.032 micron
Core stepping(s)	B2
Cores	4, 6, 8
Frequency (MHz)	2800 - 4200
Fastest processor	FX-4170
Bus frequency	2600 MHz HT
L2 cache size	4096 KB 6144 KB 8192 KB
L3 cache size	4 MB 8 MB
Thermal Design Power (Watt)	95 - 125
Package	938-pin micro-PGA
Socket	Socket AM3+