AMD currently offers the most attractive dual core option. The entry level Athlon 64 X2 3800 may cost $87 more than its Intel counterpart, the Pentium D 820, but the AMD chip is a much better performer. It also uses considerably less power. A typical Athlon 64 X2 3800 system uses less than 100W, while an equivalent Intel-based system uses about 50 per cent more, so it will be easier to build a quiet office PC around an AMD dual core chip.
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