Could Aperture's lousy performance on my Mac Pro - despite it having 8 gigabytes of RAM now, stem from the fact that I configured it with a low rent graphics card? The straighten tool in Aperture is slow and sluggish, even after throwing more RAM into this beast. I'm using an NVIDIA GEForce 7300 GT, which if I recall was the cheapest graphics card available on the Mac Pro when I configured it online last May.
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