3DMark06
3DMark06 combines the results from its graphics and CPU tests in order to reach an overall score. Here's how the processors did overall and in each of those tests.

Wow, that is tight! The QX6700 just barely edges out the FX-74 in an extremely close matchup. Let's see what made the difference.

3DMark's graphics tests are almost entirely GPU-bound, even with our GeForce 7950 GX2 graphics card. The CPU tests, though, spin off multiple threads to handle tasks like game logic, physics, and AI, so the quad-core systems can hit full stride. Their strong performance in the CPU tests, combined with essentially equivalent performance in the graphics tests, allows the quad-core rigs to take the top spots in 3DMark's overall score.