I've doubled my RAM but still can't save big files in photoshop...

Question

I have just upgraded my Ram from the shipped 4GB to 8GB but I still can't save big images in photoshop. It seems to have made no difference to the speed of general tasks and saving and I can't save big files in photoshop at all. I already moved massive amounts of files off my computer and onto my external hard drive, so there is much less in my computer now, and twice the RAM but it is making no noticeable difference. When I click memory, under 'about my mac' it shows that the RAM is installed and now has twice the memory. Could this be something to do with photoshop? I'm running CS6.

Answer 1

Also, I just calculated 220 cm into inches and this is roughly 86.5 inches. Over 7 feet in length.
WIth an image that large, you may want to consider down sampling to a lower DPI to help with being able to work on and process images of this size much easier and it will be easier for your Print house to process, as well.
You might want to consider working with these rather large images at 225 DPI instead of 300 if resolution at close distances is still a concern.
Or what you good try is working with the images at 300 DPI, but then save them/export them as a Jpeg image at the highest image quality setting.
I do a lot of project where I use a high resolution jpeg image to save on image proceesing overhead.
The final printed images still come out pretty clear, clean and crisp without having to process those large files at a print house or having to deal with using that full resolution image in a page layout or illustration program.