I have no idea about any of these things, but running memory bus via PCI-e sounds like a major regression in terms of power usage. Also.. what about latency? I

I have no idea about any of these things, but running memory bus via PCI-e sounds like a major regression in terms of power usage. Also.. what about latency? I mean, having all your RAM pooled into one coherent logical space sounds neat on paper until you realise that now you have to deal with a non-trivial NUMA architecture with unpredictable performance hits. I'm sure that this technology will have it's place for RAM in certain markets, but high-performance computing seems to prefer ultra-wide memory interfaces with energy efficient RAM.