OCing: Double or Single sided RDRAM?

[Fluxer]

Well, i'm building a new system and have been told that double-sided Samsung RDRAM is the best for overclocking. I have heard a couple conflicting reports about this but i'm pretty sure double-sided would be better for overclocking but the only problem is... does double-sided have more devices(I think thats what you call them, maybe i'm wrong) creating more latency? Any suggestions/comments would be great, thanks.