EconolineCrush writes: AMD's latest "Istanbul" Opterons add two cores per socket, for a grand total of six. Despite the extra cores, these new chips reside within the same power envelope as existing quad-core Opterons, and they're drop-in compatible with current systems. The Tech Report has an in-depth review of the new chips, comparing their performance and power efficiency with that of Intel's Nehalem-based Xeons. Istanbul fares surprisingly well, particularly when one considers its performance-power ratio with highly parallelized workloads.
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