My early 2008 3.06 24" iMac is starting to really slow down, especially when using iPhoto. I'm on my 2nd hard drive and I'm thinking that it may be starting to die so now I'm considering an SSD for at least the OS. My question is this - I have about 800 GB of movies, music and photos - if I put these on an external drive (I believe Firewire would be my fastest option), would I still have the benefit of the SSD speed bump or would all gains be erased by having to access the media on an external drive? Putting another hard drive in the Superdrive position is not an option as I need the drive (although I don't think that the Superdrive is hooked up via SATA anyway on this computer). Thanks in advance.