Shared vCPU vs Dedicated vCPU

Two VPS plans can both say 4 vCPU and cost very different amounts. One word (shared/dedicated) on the pricing page explains why.

Shared: Your vCPUs sit on physical cores that other customers also use. When the host is quiet you get close to a full core. When several machines get busy at once, your process waits. Cheap, and fine for most workloads.

Dedicated: The cores are reserved for your VM only. Same clock speed as a shared core, so it is not faster. It stays the same speed when the host gets busy. Usually costs two to three times more.

Full post with the sysbench test and which workloads need which plan: https://www.doprax.com/tutorial/shared-vcpu-vs-dedicated-vcpu-explained