Linked by Thom Holwerda on Mon 3rd Jan 2011 20:27 UTC
Intel It's the Consumer Electronics Show in Las Vegas, so it's time for new stuff to spend your hard-earned cash on. This time around, Intel is making headlines by officially launching its Sandy Bridge line of processors, which, up until now, were totally next-generation.
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Most -- if not all -- benchmarks posted on the web state the Core i5 is significally faster than the Phenom II. This does not reflect my own experience. Or to be more precise, it is only a part of my experience.

I am architect of a .NET project with about 90MBytes of Code. Mainly C# code, but low level "drivers" have been coded using C++. The build script is a nant script, that is purely sequentiell. Building that project from scratch takes ~340s on a 2.66GHz Core i5 core, but "only" 230s on a 3.0GHz Phenom II core. Per GHz the Phenom II is ~25% faster. An 1.6GHz Atom N270 takes ~1025s to do the trick. But that core is another league.

Also in my experience buildung Java projects is significally faster on the Phenom II. The same is true for commercial workloads.

All these workloads share a high number of unpredictable jumps and a large active code size.

In performing 3D graphics, image manipution and multimedia de-/encoding the Core i5 is faster. Significally. But these workloads are completely different. Mainly tight loops with a priori known number of iterations and a small active code size. In each iteration the same set of operations are performed.

There are of benchmarks available for the SandyBridge. But only 3D graphics, image manipution and multimedia de-/encoding. The bright side of the Core i5 core.

Any numbers for commercial workloads ???


Edited 2011-01-04 12:43 UTC

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