Are there performance numbers available? We're on the look out for suitable remote storage for prometheus.io, and would want to know the hardware that'd be req

Are there performance numbers available? We're on the look out for suitable remote storage for prometheus.io, and would want to know the hardware that'd be required to handle 1M samples/s and how many bytes a sample takes up. It doesn't support full float64 which we need, but we could workaround by putting it into a 64 bit unsigned number.