Ars Technica writes: "Nehalem hit the ground running last week, as benchmarks (both our own and others') showed that Intel's new Core i7 chews through most workloads in record time for a one-socket part, often besting dual-socket/octal-core Xeon configurations. The new performance gap between Nehalem and pretty much everything else of comparable cost is the result of upgrades to both the CPUs core architecture and the platform on which the multicore chip now runs.
Because the Core i7 isn't just a "Penryn" Core 2 Duo with some L3 and an integrated memory controller, the present review focuses primarily on measuring how well Nehalem's performance scales in multithreaded workloads as compared to Penryn. If Intel hit its mark, we should see Nehalem beating Penryn, even in single-thread bandwidth/latency insensitive tests. Exploring the current performance delta between 32-bit and 64-bit apps is a strong secondary consideration and is treated here as a separate variable rather than being lumped in together with CPU scaling."