OpenVZ offers a great solution for clients that do not need kernel access on their VPS and can benefit from the burst-able RAM limit that is much faster.

OpenVZ is an Operating System-level server virtualization solution, that’s built on Linux platform. It creates isolated, secure virtual private servers / vitual environments on a single physical server which enables better server utilization to ensure that application’s resource usage is optimized. Each Virtual environment functions as a stand-alone server. These virtual environments can be rebooted independently and have root access, users, IP addresses, memory, processes, files, applications, system libraries and configuration files. It offers the security of a dedicated server because a container cannot be accessed by other containers running on the hardware node.