Starting today, the general-purpose Amazon EC2 C6a instances are now available in Asia Pacific (Hong Kong) region. C6a instances are powered by third-generation AMD EPYC processors with a maximum frequency of 3.6 GHz. C6a instances deliver up to 15% better price performance than comparable C5a instances. C6a instances offer 10% lower cost than comparable x86-based EC2 instances. These instances are built on the AWS Nitro System, a combination of dedicated hardware and lightweight hypervisor that delivers practically all of the compute and memory resources of the host hardware to your instances for better overall performance and security.
Source:: Amazon AWS