Intel Announces Sandy Bridge. A Big Deal? You Bet!

Intel today officially announced the first products based on the much-discussed Sandy Bridge CPU architecture, and first impressions are highly favorable, with my take being that Sandy Bridge represents the first step in a very aggressive product road map for Intel in 2011.

Sandy Bridge is the next architectural spin after Intel’s Westmere shrink of the predecessor Nehalem architecture (the “tick” in Intel’s famous “tick-tock” progression of architectural changes followed by process shrink) and incorporates some major innovations compared to the previous architecture:

  • Minor but in toto significant changes to many aspects of the low-level microarchitecture – more registers, better prefetch, changes to the way instructions and operands are decode, cached and written back to registers and cache.
  • Major changes in integration of functions on the CPU die – Almost all major subsystems, including CPU, memory controller, graphics controller and PCIe controller, are now integrated onto the same die, along with the ability to share data with much lower latency than in previous generations. In addition to more efficient data sharing, this level of integration allows for better power efficiency.
  • Improvements to media processing – A dedicated video transcoding engine and an extended vector instruction set for media and floating point calculations improves Sandy Bridge capabilities in several major application domains.
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