instances

t2.micro 1 6 1 EBS-Only
t2.small 1 12 2 EBS-Only
t2.medium 2 24 4 EBS-Only

cpu/mem
m3.medium 1 3.75
m3.large 2 7.5
m3.xlarge 4 15
m3.2xlarge 8 30
c4.large 2 3.75
c4.xlarge 4 7.5
c4.2xlarge 8 15
c4.4xlarge 16 30
c4.8xlarge 36 60
c3.large 2 3.75 
c3.xlarge 4 7.5 
c3.2xlarge 8 15 
c3.4xlarge 16 30 
c3.8xlarge 32 60 
r3.large 2 15.25 
r3.xlarge 4 30.5 
r3.2xlarge 8 61
r3.4xlarge 16 122
r3.8xlarge 32 244