Will upgrading the graphics card improve video editing performance? I've read different views on the subject here on the forum and hope to get a definitive answer. I have a dual 2.0 G5 with the nVidia 5200 64MB. Will upgrading to the radeon 9600 XT 128 MB or 9800 Pro SE 256MB improve performance when editing video using FCE? What about running Photoshop?