What is the difference between a multi-core and single core CPU?
If you had a 1ghz dual core CPU, is it two 500mhz cores or something different?
Answer by Lestat611 · Dec 30, 2010 at 05:52 PM
A dual core is like having 2 single core processors on the same chip. Each core would have 1GHz in your example (for a theoretical total of 2GHz). But they split the workload between both cores.
Dual core processors have the advantage that they use less power compared to 2 single core CPUs and they work together more flawlessly.
I'm not sure if this is still true with windows 7 (or vista) but xp was only able to use (or only did use) 10% of the second core so you would effectively have a CPU with 1.1GHz. But I highly doubt that this is still the case with 7.
Answer by FilipinoPower · Dec 30, 2010 at 06:23 PM
Multicore processors use less energy than a single core processor with the same theoretical clock speed. I also believe, but don't quote me on this, that multicore CPU's are better at multitasking, but I'll have to look into it to be sure.
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