HP-Compaq Presario 3588 Memory
How much RAM does my PC have?

Not sure of how many memory slots you have available for a memory upgrade? Using the Upgradeable Memory Scanner Tool you can now check the configuration of your PC's memory without having to open it up.
The more RAM you have installed in your computer, the more applications you can run without slowing down the system. For example, if you are installing a 2GB upgrade, it will allow for a greater potential performance increase in comparison to installing a 1GB or 512MB upgrade. If you are running applications on your computer that like to take advantage of the RAM installed, such as photo or video editing applications, it is a case of the more RAM installed the better the application will perform.
The operating system (or OS) your computer has installed also has a maximum RAM limit. The most common OS, Microsoft Windows generally ships as a 32-bit version. The downfall of a 32-bit OS is when more than 4GB of RAM is installed; the OS will read between 3.0GB to 3.6GB depending on the hardware installed in your computer. If your system has a maximum memory limit of 4GB or higher, we recommend you use 64-bit OS on your system.
Installing memory in your computer is classified by most manufacturers as a Do It Yourself (DIY) upgrade. The Upgradeable Memory Installation Guide is included with every order which is to be used with your computers owner's manual. A PDF copy of the guide is available for download
here. We provide tech support over the phone in case you require any further assistance performing the memory upgrade procedure.
A majority of computers sold do not require pairs to be installed. Where computers have Dual or Triple channel technology, installing memory in pairs will see a slight improvement in performance. With some computers, pairs can be a requirement, check your system configuration details table for more information.