Question: what is the difference between core 2 quad and quad core?
Answer: A Quad Core is a CPU with 4 cores. A Core2Quad is an Intel marketing name for their Core 2 series CPUs with 4 cores. As Moo said, a Core 2 Quad is a Core 2 CPU from Intel with four cores. "QuadCore" probably refers to Intel's newer i7 CPU ("Nehalem"), which is bigger and better and more fun and everything.