It can load your RAM to the full and verify if any loaded memory is corrupt.
If you have just bought a new RAM module, then you can test it to the full extent using a freeware QuickMemoryTestOK. This means that if you buy new computer or a new RAM module, it will stay unused until you run a resource hungry application – that is when you might find any RAM defect if there is any present. But with so much RAM available, chances are that some memory always stays unused in your computer. The amount of RAM that you can have on your computer is only limited by the maximum capacity allowed by the motherboard. These days RAM modules are so cheap that you can go crazy and install more RAM than you would ever need.