Stefan Mileschin

AMD announced its 2014 A-Series APU for the desktop platform, code-named "Kaveri," after the southern-Indian river. Built in the new FM2+ package, the APUs run only on socket FM2+ motherboards based on the AMD A88X, A78, and A55 chipsets; while the socket itself can seat older FM2 APU families, "Trinity" and "Richland." In many ways, the socket transition is similar to that of socket AM3+. "Kaveri" sees AMD integrate two of its newest CPU and GPU micro-architectures, "Steamroller" for CPU, and Graphics CoreNext 2.0 for the GPU. "Kaveri" is also built on newer generation 28 nm silicon fab process.

"Steamroller" is an evolution of the same modular CPU core design as its predecessors, "Piledriver" and "Bulldozer." AMD promises a 10 percent improvement in performance clock-by-clock, per core, which falls in line with AMD's normal scheme of annual incremental performance updates on its CPU micro-architectures. A "Steamroller" module is a combination of two 64-bit x86 cores, which feature dedicated and shared components. "Kaveri" has two such modules, and so physically, it features a quad-core CPU.

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