Instance type configuration of RDS
Ec2 vCPU memory
M4.large 2 8
M4.xlarge 4 16
M4.2xlarge 8 32
M4.4xlarge 16 64
M4.10xlarge 40 160
M4.16xlarge 64 256
RDS: vCPU memory
Db.m4.16xlarge 64 256
Db.m4.10xlarge 40 160
Db.m4.4xlarge 16 64
Db.m4.2xlarge 8 32
Db.m4.xlarge 4 16
Db.m4.large 2 8