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Originally Posted by wasabisashimi
Does anyone have any article to share that explains why AMD clock speed 3.2Ghz can run slower than intel clock speed 2.66Ghz at benchmark testing.
is AMD GHz vs intel GHz only for marketing purposes?
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Ghz comparison is pretty much pointless nowadays with all the different architecture...it was useful maybe 5-6 years ago.
generally speaking....at the same clock speed - i7 > i5 > Phenom II x4, > Penryn/Conroe > Phenom I > Althlon II...etc
All of the CPU you have listed are close to the top-end models...for office tasks, a $100 AMD Quad Core (6xx) CPU is much more than sufficient
Go with AMD if you want better value, it will generally give you better performance per $ value wise especially after you take into account the costs of the motherboards. AMD mobo also comes with better onboard graphic if you don't intent on using a video card.