OpenVPN remains widely used because of its mature ecosystem, client compatibility, and flexible configuration. Compared with WireGuard, it can require more CPU for the same throughput depending on cipher, protocol, and platform.
The best VPS is therefore selected primarily by network location and expected throughput, with CPU becoming more important as user count and encrypted traffic increase.
Key takeaways
- 1 GB to 2 GB RAM is enough for many small OpenVPN deployments.
- CPU matters more than memory at higher encrypted throughput.
- Choose a region near users for lower latency.
- Bandwidth-heavy VPN use should be modeled in terabytes, not page views.
- Use a stable public IP and keep the server patched.
OpenVPN resource requirements
A small personal or team VPN does not need much memory. One or two gigabytes is normally plenty for the VPN process and Linux.
Encryption throughput can become CPU-bound as traffic increases, so measure real transfer speeds rather than assuming the network port is the limit.
UDP, TCP and latency
OpenVPN is commonly deployed over UDP for better interactive performance, while TCP can be useful in restrictive network environments. The protocol choice affects behavior but does not remove the importance of server location.
Place the server near users unless the goal specifically requires a distant exit region.
Bandwidth and public IP
Streaming, downloads, remote work, and backup traffic can consume significant monthly transfer. Check overages and throttling before using an inexpensive plan for heavy VPN traffic.
A stable public IPv4 simplifies compatibility across many networks, although IPv6 can also be used where supported.
OpenVPN vs WireGuard
WireGuard is simpler and lighter for many modern deployments. OpenVPN remains useful when mature client support, existing infrastructure, or configuration flexibility is more important.
Choose based on compatibility and operational needs rather than assuming one protocol is universally superior.
Frequently asked questions
How much RAM does OpenVPN need?
One to two gigabytes is enough for many personal and small-team VPN servers.
Does OpenVPN need dedicated CPU?
Not for light use. High-throughput encrypted traffic may benefit from faster or dedicated CPU.
OpenVPN or WireGuard?
WireGuard is lighter and simpler for many modern setups; OpenVPN remains useful for broad compatibility and mature deployments.
Is OpenVPN good on a cheap VPS?
Yes when the provider has a suitable region, enough transfer, and acceptable CPU performance.