[anonmeow]

Server CPUs have >2x memory channels when compared to consumer CPUs. IBM Power CPUs show that it's possible to get even more memory bandwidth than in mainstream Xeons. Looks like low RAM bandwidth in consumer CPUs is a mostly artificial differentiator to discourage use of these parts in servers.

On the other hand there are HMC and HBM technologies that offer order of magnitude more bandwidth and several times less latency. They are already used in AMD gpus as well as in prototypes of Nvidia's pascal gpu and Intel's Knight's corner 60-core cpu http://www.theplatform.net/2015/03/25/more-knights-landing-x...

I hope HBM comes to consumer CPUs too, but with current lack of competition in the market it can take a long time.