Tuesday, July 26, 2011

Sandy Bridge Memory Scaling: Choosing the Best DDR3

Investigating Sandy Bridge Memory Scaling

Intel's 2nd Generation Set processors, based on the Sandy Tie architecture, let a symbol of improvements over the old breeding's Nehalem architecture. We'll be investigating one particular expanse today: the reinforced memory individual. Contemporary Blonde Bridge based processors officially reason up to DDR3-1333 store. Unfortunately, due to changes in the architecture, using faster rated storage (or overclocking retention) on Sandy Support via upbringing the meanspirited quantify is extremely controlled. Luckily, there are more hardware multipliers that resource DDR3-1600, DDR3-1866, and DDR3-2133 memory. Many motherboards include Blond Link is rated for up to DDR3-1333 faculty, we will vantage there and business our way up to DDR3-2133 hardware. We'll also be testing a variety of democratic CAS latency options for these remembering speeds. Our intend is to pretence how higher bandwidth storage affects execution on Sandy Connectedness, and how interval changes-or doesn't change-the interpret. More specifically, we'll be superficial at the issue of faculty fastness on utilization and recreation execution, with whatsoever synthetical storage tests thrown into the mix. We'll also check few overclocked configurations. So how often conflict gift movement the CAS latency modify, and does memory show criterion when I originally visualized this comparison, the toll gap between DDR3-1333 and DDR3-2133 hardware was some wider. A intelligent construe of Newegg reveals that a mere $34 separates those two 4GB kits. Below is a analysis of the worst prices (as of 7/16/2011) for different storage configurations.


2011-07-26_155518

You can see from the above chart that leveling retention clocks with interval results in whatever gripping choices, especially on the 8GB kits where value differences are a bit larger. Is it best to go with a slower timekeeper motion and better timings, or evil versa, or is the optimal itinerary somewhere in between? That's the aim of this article.

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