I am working on a C4I application using GIS engine, and since the engine uses the CPU for it's calculations (not many GIS systems use the capabilities of graphics cards so far) the effect of the processor is critical in terms of performance. We recently ran a test of the same system and scenario, once with an old processor, and once with a new, faster (both in clock speed and FSB ), HyperThreading capable processor. According to some benchmarks, the new processor performed twice better than the old...