Purchasing hardware to upgrade your PC can be confusing, time consuming, and just downright frustrating to make sure that you are getting the right parts.
One of the first things to consider when thinking about upgrading is whether the cost of the upgrade will even be worth it. Thinking about long term costs, it could very well be a better idea to upgrade the whole computer. In many cases, it can be cost effective to simply add more RAM, or upgrade a video card. In some cases, especially when the computer is older than 4 years, it is probably a good idea to upgrade your whole system.