ISO50: SSD + RAID = Photoshop Performance
If you are using Photoshop for anything, you should at the very least have one dedicated drive as the swap. If you are serious about using Photoshop for print and larger file sizes, you should be running an SSD for your swap drive. If you are obsessed with Photoshop performance and are creating 24×36″ posters @ 300dpi, you should be running multiple SSD’s on a dedicated RAID0 card as your swap disk.