MacBook Pro 2013 13" Specs: http://support.apple.com/kb/SP668
You can look and tell if you go to the Apple icon on the upper left of the desktop screen "About This Mac" and then "More..." or just go to the System controol panel preferences.
The MacBook Pro comes with one of these configurations.
Your MacBook Pro comes standard with a 5400-rpm Serial ATA hard drive. Or you can choose a solid-state drive that offers enhanced durability.
The larger the capacity (in gigabytes, or GB) of your hard drive, the more space is available to store your files and applications. A typical application today may take 10 to 50 megabytes (MB); photos may take up about 2-4MB each; graphics files can occupy more than 100MB; and video files are often many gigabytes in size.
MacBook Pro also offers an optional 128GB, 256GB, or 512GB solid-state drive, which has no moving parts for enhanced durability. These are new third-generation SATA solid-state drives, which are up to 4x faster than a traditional hard drive.
All drives come formatted in the Mac OS Extended file format for efficient storage of your data.
Important note: For hard drive capacity measurements, 1GB = 1 billion bytes; actual formatted capacity less.Learn more (Hard Drive)
Direct you to the proper forum for MacBook :
MacBook Series Forums
Mac OS X Forum
This forum deals with a desktop/tower 65lb Mac ProMac OS X Help
Isolating Issues in Mac OS
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so i also notice that the sound compareing to my sisters macbook pro, mine sounds more like a humming sounds very lite , like you have to put your hear to the keyboard to notice it & every once and a while i hear a click or some werid noice like something is moveing inside almost like a little ball inside is being flicked, but not over powering
An appointment at the genius Bar is FREE, in warranty or out. These guys put their hands (and eyes and ears) on these computers all day, every day. They know exactly what they should sound like.
My story: My son's MacBook was doing weird things with the Video. The bottom of the screen would "break up" from time to time. I dutifully ran the diagnostic, got an error code, and made an appointment at the genius bar.
We showed up for the appointment and handed over the MacBook. The genius took it and powered it on. Then he made an awful face. He picked it up and held it over his head like a hat, listening intently to the keyboard. "You have a bad fan." he announced.
"Now what was that error code you said you had?" It looked up to a sensor error, fan not spinning fast enough. Bad fan.