Core i7 Systems - How much faster?

According to Intel "With faster, intelligent multi-core technology that applies processing power where it's needed most, new Intel® Core™ i7 processors deliver an incredible breakthrough in PC performance. They're the best desktop processors on the planet.? You'll multitask applications faster and unleash incredible digital media creation. And you'll experience maximum performance for everything you do, thanks to the combination of Intel® Turbo Boost technology and Intel® Hyper-Threading technology, which maximizes performance to match your workload."

But the real question is, how much faster are the Core i7 CPU's really?

We have done some benchmarking with different systems, different CPU's, different RAM etc but stayed with the same Video card throughout all the tests.

SYSTEM SPECIFICATIONS

Core i7 920 Overclocked to 3.2Ghz with 3x1Gig DDR3 1600Mhz RAM - GTX 285

Core i7 920 @ 2.66Ghz with 3x1Gig DDR3 1600Mhz RAM - GTX 285

P45 Motherboard Q8400 Overclocked to 3.6Ghz with 3x1Gig DDR3 1333Mhz RAM - GTX 285

P45 Motherboard Q8200 Overclocked to 2.8Ghz with 3x1Gig DDR3 1333Mhz RAM - GTX 285

P43 Motherboard Q8200 @ 2.33Ghz 2.8Ghz with 2x2Gig DDR2 800Mhz RAM - GTX 285

In all tests the Core i7 certainly came out on top.