5 - 30 minuten
The computer was simply getting too slow; I run Yosemite 10.10.3 and did lots of video editing protects running Final Cut Pro X 10.4 and it was putting a toll on my computer. Somehow some applications kept crashing and the videos would take a while to edit. Also I was told by the Apple tech that my hard drive was about to fail.
I replaced the RAM memory to 8G; flawless. The SSD installation was a bit complicated since I used the dual drive and took the CD/DVD writer out and replaced it with the Kit. It was not too complicated if you have the patience and you like to do this kinda stuff. It took me about 2 hours to complete the process. I watched the tutorials a couple times before opening up my MacBook Pro. And it was easy enough.
My advice is, MAKE SURE YOU format the new hard drive and use Time Machine back up BEFORE you open the computer and start replacing ANY PARTS. Somehow (this is the second time that happens to me unfortunately) when handling the hard drives; the old ones tend to corrupt and won't boot afterwards. Buy the SSD with the kit if you don't have one, plug it; format it to Mac OS Journaled and back up all you data. Save yourself a trip to the Apple Store.
Unibody Laptop Dual Drive
1 TB SSD Hybrid 2.5" Hard Drive
PC3-8500 4 GB RAM Chip