Ive had an SSD in my MBP late 2011 13" for about 15-16 months. When I first tried out the speedtest through Blackmagic - the write/read excelled. Nowadays they are struggling at 120 mb/s. If its worth mentioning, its a 256 GB Samsung 830 SSD. I generally feel that apps load slower, and frankly - I think Mavericks made my computer even slower. Any suggestions on what to do? My crazy conspiracy theory is that apple intentionally slows "older" macbooks down through updates to force newer purchases.