Which is better, a single processor 3.0 Ghz computer or a dual core 1.5 Ghz?

Question: I heard that unless the dual core is configured properly it is basically the same as a single processor.

Answer: It's not a direct comparison, because applications don't behave the same way in different CPUs. If you're asking about a single core Pentium 4 versus a 1.5 Ghz Core 2 Duo, generally, the Core 2 Duo will be faster because it has a more efficient architecture internally for processing instructions. There are some programs that are dependent on absolute clock speed, but as dual core processors have become commonplace in the last 3 years, most have been written to take advantage of a dual/multi core architecture

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