Quote Originally Posted by qcmadness View Post
but then it could not explain the lower DDR-2 memory bandwidth when comparing K10 with K8?
I think it's the problem of measuring the BW on 10h systems due to design change(unganged/ganged is a new thing in 10h Vs the old K8). I remember very well that first sisoft sandra results very very poor on 10h simply because the app was not programmed for the new IMC organization 10h had when it showed up.
What matters is memory latency and L3 helps a lot(as any cache does since it is heaps faster than any regular DDR memory out there).
Now BD will have much improved memory controller and will support even higher DDR3 speeds (1600+). That should be enough even for 8 cores.