the Intel core 2 quad
core 2 duo will be better.
There is no difference between dual core and core 2 duo. Intel just name its recent family of dual core processors as "core 2 duo". Both (core 2 duo and dual core) works in same fashion.
Core 2 duo is dual core. And before that was core duo which was dual core too...
Core 2 Duo
1. Breath In 2. Breath Out
A Core 2 quad is essentially 2 Core 2 duos put on one chip so its almost twice the power.
Waxing and waning.
melanie
A generic "dual core" processor is any processor which has two separate processors on a single chip. This should not be confused with the Pentium Dual-Core, which was a brand of dual core processors which used the Pentium architecture on each core. The Core 2 Duo is also a specific processor from Intel. The Core 2 is a brand of microprocessors based on the Core architecture. The Core 2 Duo specifically refers to a dual core version of the Core 2 brand.
The Athlon x4 will be better as it is a quad core compared to the Core 2 Duo's dual core technology. Should you wish to look at the Core 2 Quad, then the Core 2 Quad would be a better choice.
The quad core processor has four cores. It is essentially two of the Core 2 Duo processors as the Core 2 Duo only has two. The quad core will be faster and as a result more expensive.