I was not able to find Amazon declaring that they don't, but neither do they say anywhere that they do. For example they describe the hardware specs here: http:

I was not able to find Amazon declaring that they don't, but neither do they say anywhere that they do. For example they describe the hardware specs here: http://aws.amazon.com/ec2/instance-types/ http://aws.amazon.com/ec2/instance-types/ If they did have ECC RAM it is unlikely that they would keep it secret, especially given that ECC RAM can be twice as expensive.