Gaming Benchmarks (Continued) 

Some people will argue that most games don't take advantage of dual cores efficiently, never mind quad cores.  However, if you take a look at the chart below, it paints a very different picture.  A low resolution was used so more of the CPU power could be utilized and as you can see, the overclocked quad, out performs the heavily overclocked dual by more than 20 frames per second.

Courtesy of Toms Hardware

It is only when you start to increase the resolution does the E8400 start to catch up and narrow the performance difference, as you can see below.  Although you can't dispute the sheer power of the quad in both charts.  Considering the E8400 has to overclock a further 600MHz just to keep up.

Courtesy of Toms Hardware