Updating from OS X 10.5 or Earlier Updating from 10.6 or Later Community Q&A This wiki How teaches you how to update Safari and get rid of the "This version of Safari is no longer supported" messages.
I added 4GB of memory to replace the 2GB that it came with, and performance increased a bit, although not by much.
When using this term “upgrading,” mainly the computer’s RAM and hard drives come to mind. If you find that launching programs is horrendously slow or that you experience crashes and freezes, a RAM upgrade may need to be in the works. If Finder seems to take a while to load, file transfer is slow, or programs take a while to respond – you may be interested in upgrading your Mac’s hard drive.
There are three main reasons to replace a drive: In regard to tackling reason two, rather than upgrading for the sake of more storage, try using an external drive.
Eventually, your Mac won’t be able to keep up with those demands.
In the short-term, you can slide back to an earlier software version to help with performance.
In recent years Apple has soldered in many parts of their Macs – including HDDs, SSDs, RAM, etc. However, there are a few Macs still available across sites such as e Bay and Amazon that are not only close-to-par with their current gens in areas like processing power, but they offer the ability to upgrade general hardware.