Looking back, quad-core processors have had quite the run already. Intel’s first quad-core CPU, the Core 2 Extreme QX6700 was released almost three years ago, with the much more popular Q6600 following up months later at a rather steep $850. As you may recall it was quite the luxury then to have one of these at your disposal. AMD came to market with their own quad-core solution a year later, marking the release of the first Phenom X4 processors. Though in all fairness, it took them about one more year to get things going right.