Photoshop CS4 Using 400%+ CPU

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ide3308 Junior Member Join Date: Feb 2008 Status: Offline	Sep 6, 2009, 02:12 AM
	Hi All, to those familiar with Photoshop CS4... I have been doing some work tonight while looking at Activity Monitor to see if there are any noticeable differences since I installed Snow Leopard. And boy, are there?! I am running it on a Mac Pro 1,1 2x2.66GHz. Now, I realize the monitor shows 100% for each processor, adding up to 400 in my case. Does anyone have any idea how it's possible for it to report 500-600% CPU? Does this have anything to do with Grand Central or the GPU? The only thing I've changed was from 10.5 to 10.6. What's up with that? Thanks!