When I run Photoshop and InDesign on my AMD, they fly like no tommorrow. It's unreal how fast and silky they operate. But when it comes to Poser, it's a dog. Here's an example:Load up V3 (quick), Move her around with full tracking = just like on my Celeron 400. Select her face, and it takes 15 seconds for all the dials to show up. Move a parameter, and it takes another 5 seconds to display the change. Switch to box preview and it speeds up enough, but it's almost tittle for tattle same as my old Celly. I even setup a dual boot into win98se, just to see how much a diff it'd make (none) so...my guess is it's the Poser 4 software. AMD Sempron 2800+ (1.6Ghz) isn't a blistering choice, but it SHOULD be scads faster than the dumpster I replaced. For poser, it ain't. Everything else is blazing compared to the old Celly. Poser 4 renders are lightning quick, but the actual posing is pathetic.