New Features of AMD’s 45-nm Shanghai Processor
New Features of AMD’s 45-nm ‘Shanghai’ Processorby Scott Ferguson
Performance
—45-nm with Immersion Lithography—Greater frequency compared with Quad-Core AMD Opteron
Performance
—AMD Memory Optimizer Technology—Enhanced pre-fetching 2x Core Probe Bandwidth compared with Quad-Core AMD Opteron
Performance
—AMD Balanced Smart Cache—8MB: Twice the total cache compared with Quad-Core AMD Opteron
Performance
—HyperTransport Technology 3.0—Level 1 up to 17.6GB per second (not available until the second quarter of 2009)
Power Efficiency
—45-nm with Immersion Lithography—35 percent lower idle power compared with Quad-Core AMD Opteron
Power Efficiency
—AMD Smart Fetch—Up to 21 percent CPU power savings
Virtualization
—Enhanced RVI—Faster world switch compared with Quad-Core AMD Opteron
RAS
—L3 Cache Index Disable—Superior data integrity
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AMD has used a common platform for its x86 chips, from the quad-core “Barcelona” and “Shanghai” to the six-core “Istanbul” and “Sao Paulo” chips.