Originally Posted by Tony
Interleaving
Does not rely on ranks, it works on ram density.So 2x512 may give you 4 way and 2x1024 should then give you 8 way.
4x512 at 1t is faster than 2x512 but about the same speed as 2x1024, now if you can run 4x1024 you should have the ultimate speed as long as you are at 1t.
fact is on the A64 we have 4 options of interleaving, 2way, 4 way, 8 way and off. I actually think:
2x256 or single channel = off
2x512 = 2way
2x1024=4way
4x512 and 4x1024=8 way
Hard to say whats actually correct but i know a man who can help.
Please remember it depends on density, not the ranks.