Whenever an app is executed on a web server, it's loaded into the physical memory. If you run a resource-demanding script, or if you just add more scripts on your websites and you get plenty of visitors, you may encounter a scenario where your VPS has too little memory to run all the applications and freezes as a result, which means that your Internet sites will stop operating properly and that the visitors shall start seeing error messages. To avoid this sort of a scenario, you'll be able to take advantage of the RAM upgrade that we are offering and increase the amount of physical memory for your use without changing the entire plan. In this way, you may pay only for the resources which you actually need rather than for additional disk space or higher Processor speeds which you shall not really use, for instance. With the upgrade, you can guarantee the flawless functioning of your websites, which also means a better experience for your site visitors.