A while back, I doubled the RAM in my early 2011 13" Macbook Pro, and it made a big difference. Replacing the old spindle drive with this SSD is like a brand new machine. I had to jump through some hoops (like digging out the original Snow Leopard disc, because the machine is so old) but the speed is amazing. The Core i5 actually has to put down its beer and do some work to keep up. InDesign, Photos, Chrome – all open in a handful of seconds. I should have done this ages ago. The machine seems cooler and quieter, too. It's good to go for another five years.