Here is the main differences between AMD and Intel.

1. Intel processors usually have more LVL 2 cache memory in them. The cache memory is the absolute fastest memory in the computer. It resides in the CPU. The more cache memory that you have the better the performance will be for gaming/photoshop/music editing.

2. AMD's CPU clock speed is underestimated. If you see a Phenom II x4 running at 2.4 GHz, it will actually be running at 2.66 GHz. AMD was built from the x86_64 family of intel so they can't surpass the cache memory of Intel, but they can develop their own technology that will 'be better' than the Intel family.

3. AMD processor chipsets are programmed with ATI graphics cards in mind. They will fully utilize the ATI graphics cards. Intel processor chipsets are programmed with nVidia in mind.

There really is not a better overall processor. Although Intel has better LVL 2 cache. AMD has better LVL 3 cache that resides off the CPU, but has the technology to make it act like it is on the CPU.
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