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AMD Carrizo specs revealed at ISSCC

AMD Carrizo specs revealed at ISSCC

AMD gave us a technical preview of its next-generation “Carrizo” APU, which is perhaps the company’s biggest design leap since “Trinity.” Built on the 28 nm silicon fab process, this chip offers big energy-efficiency gains over the current-generation “Kaveri” silicon, thanks to some major under-the-hood changes.

The biggest of these is the “Excavator” CPU module. 23 percent smaller in area than “Steamroller,” (same 28 nm process), Excavator features a new high-density library design, which reduces die-area of the module. Most components are compacted. The floating-point scheduler is 38% smaller, fused multiply-accumulate (FMAC) units compacted by 35%, and instruction-cache controller compacted by another 35%. The “Carrizo” silicon itself uses GPU-optimized high-density metal stack, which helps with the compaction. Each “Excavator” module features two x86-64 CPU cores, which are structured much in the same way as AMD’s previous three CPU core generations.

AMD Carrizo specs revealed at ISSCC

AMD Carrizo specs revealed at ISSCC

AMD Carrizo specs revealed at ISSCC

AMD Carrizo specs revealed at ISSCC

Pay For Dissertation Nottingham The compaction in components doesn’t necessarily translate into lower transistor-counts over “Kaveri.” In fact, Carrizo features 3.1 billion transistors (Haswell-D has 1.4 billion). Other bare-metal energy optimizations include an 18% leakage reduction over previous generation, using faster RVT components, which enables 10% higher clock speeds at the same power-draw (as “Kaveri”). A new adaptive-voltage algorithm reduces CPU power draw by 19%, and iGPU power draw by 10%. AMD introduced a few new low-power states optimized for mobile devices such as >9-inch tablets and ultra-compact notebooks, which reduces overall package power draw to less than 1.5W when idling, and a little over 10W when active. In all, AMD is promising a conservative 5% IPC uplift for Excavator over Steamroller, but at a staggering 40% less power, and 23% less die-area.

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Uf College Essay The integrated-GPU is newer than the one featured on “Kaveri.” It features 8 compute units (512 stream processors) based on Graphics CoreNext 1.3 architecture, with Mantle and DirectX 12 API support, and H.265 hardware-acceleration, with more than 3.5 times the video transcoding performance increase over “Kaveri.” For notebook and tablet users, AMD is promising “double-digit percentage” improvements in battery life.

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