Last week I upgraded one of our laptops from 1 GB to 2 GB of memory for the whopping cost of $25. The memory was nothing special, just a single 1 GB DDR2 laptop stick. Considering the price of the most common type of memory is so cheap right now, why not double your RAM? The cost of putting extra memory in your system is always well spent as it typically increases performance more than any other upgrade and can extend the life of your PC for a while.

If you are not sure what type of memory you need, use a memory selector such as what Crucial or NewEgg offer (both of these places are also excellent places to buy your memory).

Unfortunately, if you are using older types of RAM such as PC133 or DDR (1), the prices are not as cheap. If this is the case, check out Ebay where you can usually pick up new or good as new stuff for quite a bit cheaper than buying it new.