The more physical memory your Virtual Private Server has, the more apps you shall be able to run simultaneously. Some pieces of software require loads of RAM even if nothing else is running on the server, even though they may not require high CPU speeds or lots of disk space. In case your web server runs out of memory, it'll stop responding and the websites and the offline applications you host on it won't function effectively, as their software components won't load since there will not be any free memory. In this light, we offer a RAM upgrade for our VPS plans, therefore if you detect that your machine is close to the limit, you can make the most of this upgrade without upgrading the whole plan and paying for system resources which you won't use. That way, you can guarantee the proper operation of your scripts and stop concerning that your website visitors will see errors or will not be able to open your sites at all.