Confusion - CPU clock speed

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http://crunchbanglinux.org – Hi guys :)I went to a computer store yesterday and I inspect most of the laptops in the showroom. I found these...1. HP Envy priced at USD590 (approx), thin form factor with Core i3 Ivy Bridge clocked at 1.4 GHz.2. Acer Aspired priced at USD655 (approx), standard size laptop with AMD A8 Quad-Core clocked at 1.8 GHz.* sorry, I couldn't get any pictures*my questions are :1. What can we do with a CPU clocked at 1.4 GHz... seriously??! I have an Atom-powered netbook clocked at 1.66 GHz and the performance is and only good with typical web browsing.2. AMD A8 Quad-Core clocked at 1.8 Ghz... ser (HowTos)