During the past few weeks, I have spent a few hours to upgrade my
Two laptops. Mainly, I have replaced the mechanical hard disk to SSD. Moreover, both of them are faster at least one times. My Mid-2012 MacBook Pro has a huge improvement. I have already upgraded the memory to 16GB before, but I still found that is very slow. However, after I upgraded the hard disk to SSD which is Samsung 850 PRO with SATA3. That is 6GBit per second bandwidth. Then I found that became a fast laptop. It can compare with a new mac book pro. I can use it to write apps. I am using Visual Studio for Mac in this book without any performance issues