Not in most cases, it will depend a little on your choice of replacement harddrive
Saving game to your hard drive can lead to faster load times, and the xbox will make less noise because the disk drive will not be spinning.
PlayStation support network has the information needed to replace and upgrade the harddrive depending on the PS3 model. See related link
yes you can if you have the bigger version of the playstation 3 on the left side is a small door take off that door and you will see some metal with a blue screw. Take out that screw and slide the HDD to the right then pull it out. This is the memory device for the ps3 also known as the HDD or hard disk drive. The details printed on the the HDD will help you determine what kind of hard drive you will need when you upgrade. amazon.com is a great chap way to buy hard drives
The PlayStation 3 is not designed to work without a hard drive. When the hard drive is worn out after many rewrites, the PlayStation 3 will no longer function and the hard drive should be replaced.
You can replace the drive on your PlayStation, but only if you are comofortable with disassembling electronics.
There is only 1 thing to upgrade on a Xbox, that is the hard drive.
No the PS3 slim uses either a 120 GB harddrive or a 250 GB harddrive. All of the PS3 consoles use standard notebook size harddrives and the Sony PlayStation Support website has procedures for the upgrade of the harddrives. see related links The following paragraph is an excerpt of the first paragraph from the PlayStation Knowledge Center support information on upgrading the Hard Disk Drive. The PlayStation 3 system hard disk drive (HDD) is removable and upgradeable. An upgrade can be performed by removing the hard drive and replacing it with a larger capacity drive. Please be advised that if you replace the hard drive, the data that was on the original hard drive will not show up on the PlayStation 3 unless you manually back up the data and transfer it to the replacement hard drive. Procedures are also provided for most PS3 problems that others have found they needed assistance with through a support search that is available at the site.
You need to upgrade the hard drive (to a bigger one) or clean it if you have to many games installed.
PS3s were designed to take the standard laptop size harddrive . The PS3 system hard disk drive (HDD) is removable and upgradeable. Amazon has a PS3 160 GB Hard Drive Upgrade Kit for $68.99 see related link. However you do not need to purchase a special PS3 harddrive and can purchase any laptop Harddrive over the internet or from stores like Best Buy. I have added, Can I upgrade the hard disk drive (HDD) inside my PlayStation®3 computer entertainment system? from the Playstation knowledge Center as a related link to assist you after you have found and purchased your harddrive.
USB Drive, PlayStation Store are a couple of methods
PS3 uses a standard Laptop Harddrive and the PS3 has been designed to allow you to upgrade the harddrive with a 2.5" internal Serial ATA HDD see related link from Playstation support. Quote from related link,"The PS3 system hard disk drive (HDD) is removable and upgradeable. An upgrade can be performed by removing the hard drive and replacing it with a larger capacity drive. Please be advised that if you replace the hard drive, the data that was on the original hard drive will not show up on the PS3 unless you manually back up the data and transfer it to the replacement hard drive." For complete instructions on how to properly upgrade the hard disk drive, the related link has more information.
Hard drive speeds of 7200rpm allow for it to read/write/copy data faster, but this doesn't necessarily mean it will open programs faster. If you want to run programs faster, upgrade your computer's RAM (random access memory or usually just called memory).