The "Extreme" tag is for Intel's high performance, enthusiast processors with high stock clock speeds and unlocked multipliers for easy overclocking. The processors can be overclocked by increasing the clock speed multiplier in addition to the front side bus.
Keep in mind the majority of Extreme processors are over US$1,000.![]()
Yeah, they are insanely expensive.
I dont personally think Apple is paying close to 1,000 for the 3.06 GHz processor though.
Its' probably a chip that Intel custom designed for Apple with a faster clock multiplier.
Either that or they just figured hey, these Core2s overclock nicely, and fiddled with the bus speeds. :3