I have Photoshop CS5, but it can't take advantage of an 8 or 12 core Mac Pro processor. Is the architecture of CS6 better for an 8 or 12 core processor - can CS6 use more than 4 or 6 cores to speed up the image processing?
This is an excellent article by John Nack. No personal experience on my side, but it can give you an idea.
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