> > The really, really big ones are useful even for pushing limits, such > as cr1.8xlarge, with 32 CPUs and 244GiB memory. Current spot instance > price (the heavily discounted "can die at any time" one) is $0.343/hr. > Otherwise, it's 3.500/hr. >
Just to keep in mind cpus are similar throttled: One EC2 Compute Unit provides the equivalent CPU capacity of a 1.0-1.2 GHz 2007 Opteron or 2007 Xeon processor. This is also the equivalent to an early-2006 1.7 GHz Xeon processor referenced in our original documentation. Who knows what that does to memory bandwidth / context switches etc. Jesper
