I just installed a solid state drive into my Mac Pro to store my very large LightRoom catalog in. I currently have over 215k images and LightRoom is slowing to a crawl. It doesn’t help that the catalog was installed on slower 5,400rpm “green” drives. I decided to move the entire catalog over to a 256GB SSD to see what would happen. Night and day difference. LightRoom now works in real-time again, even with 215k images. This screencast is just a demo of the speed differences. Very dramatic increase.