Lately I've been doing gigapans (final image size 2Gb to 15 Gb) and am considering Maxing out my mac pro. current processor is 2 X 2.4 quad Core Intel Xeon with 26 GB 1066 DDR3. things work fine in "Stitch" the prietary stitching software from the Gigapan folks but when I process in Photoshop its slower than 1995. Photoshop CS5 running in 64bit allocated 80% of total ram. anyway: would it be worthwhile ( more efficient, faster processing time) to add more ( like 2x) ram? Intuitively it would seem that the more ram the faster the image is done but is there a limit to what benefits these large amounts of ram can produce.