What is the difference between a Dual Core and a Core 2 Dual?

I am guessing you mean Core 2 Duo, that is just a dual core proccessor thats made by intel.

In layman's terms, Dual Core is the generic description for processors that essentially were two core processors fused together in a single chip. An example of dual core processors are Intel Pentum D, Intel Core Duo, Intel Core 2 Duo and AMD's line of AM2 X2 Athlon processors. Core 2 Duo is Intel's brand of processors that succeeded their first generations of dual core processors - Pentium D and Intel Core Duo. The first generation of dual core chips were simply Pentium 4 Prescott chips fused together in the case of Intel, and in the case of AMD were simply two Athlon 64 chips fused together. Intel Core 2 Duo and AMD AM2 Athlon X2 improved on that technology by improving voltage requirements and clockspeed. My advise is to go for Intel's Core 2 Duo over its older Intel Core Duo. There is a significant difference in speed and thermal core temperature threshold, two things you need to consider if you're going to use your pc for long periods.

Hi ahgong, Dual Core and Core 2 Duo, both by Intel, are more or less the same when it comes to speed. The difference is that Dual Core is the low-end kind and the Core 2 Duo is the high end kind. It's like comparing Intel's Pentium and Intel's Celeron, such that Pentium is the high-end and Celeron is the low-end product. The difference of the low-end from the high-end is that high-end products are more durable especially if you're planning on running the computer full-time. They don't heat as much and as fast as it's low-end counterpart. Although if you're in a budget and you're not really gonna run your computer for so long each day. Then I guess the low-end is enough; the Dual Core.

Dual Core is simply a generic term referring to any processor package with two physical CPUs in one and
The Core 2 Duo is intel's second generation (Hence, Core2)processor made for desktops and laptops designed from the ground up to be fast while not consuming nearly as much power as previous CPUs.