The right capacity of RAM depends on the usage of your server. A basic website may have little reason to pay for 8 GB. A database-heavy application may struggle with only 2 GB. So, choosing a virtual private server should not be about comparing RAM size and monthly cost of RAM. For RAM, observe your workload, monitor how the server behaves, and upgrade when there is a slowdown in performance. With the right balance, you get enough memory for reliable performance without paying for resources your Linux VPS will never use.