MacBook – Which has more effect on software launch times: processor, RAM, or Hard Drive

hard drivehardwaremacbook proprocessorupgrade

I am looking into getting a new Macbook Pro (hopefully they'll have late 2013 models). I currently use my early 2011 Macbook for iOS app programming and light graphic design work with Pixelmator. I can't remember when, but I think when I upgraded to Mountain Lion all programs now take a little longer (too long, imo) to launch.

For future reference, I was wondering what affects app launch times the most? Is it the processor, RAM or hard drive/SSD? Right now my Macbook's got 2.4Ghz Core 2 Duo, 8GB DDR3 and a 250GB hard drive.

Best Answer

Until the software is loaded in to the RAM it is your Hard drive that is the bottleneck.

So using SSD you will gain some speed, but make sure you keep 20% free space on the disk.

Once the software is in your RAM it is the combination of the processor (CPU) and the RAM, assuming you have sufficient RAM so not to have to share it with SSD.

After that it is the software it self that slows things down by bad design, bad drivers, or needing lots of other cross functional activity (other programs) to operate.

You can find the details of shut down and start up in your Console

var/log/system.log