As found previously when running the in-built WinRAR performance test, this program can’t seem to handle more than four cores and as a result the Core i7 980X Extreme Edition performs very much like the Core i7 975 EE processor. Photoshop CS4 also shows no real advantage for the six-core processor. In both the HardwareHeaven and Retouchartists tests Intel’s Core i7 980X Extreme Edition and 975 EE saw similar performance.