The more physical memory your VPS has, the more applications you shall be able to run all at once. Some programs require lots of RAM even if nothing else is running on the hosting server, even though they might not demand high Processor speeds or plenty of disk space. If your server runs out of memory, it'll stop responding and the websites and the offline applications that you host on it won't work adequately, as their software components will not load since there will not be any free memory. In this light, we offer a RAM upgrade for our VPS plans, thus if you discover that your machine is close to the limit, you could take full advantage of this upgrade without upgrading the whole plan and paying for system resources that you will not use. In this way, you could guarantee the proper functioning of your scripts and stop concerning that your website visitors will see errors or will not be able to open your websites at all.