dual channel ram at single channel ram ba?
Test Results: Single Vs. Dual Channel RAM
according to daryl..
The "dual" or "single" channel has nothing (ok, very little) to do with the DIMM and everything to do with your CPU and motherboard. Dual channel RAM is memory that can be accessed via a 128-bit bus (dual 64 bit channels). But you must have at least two DIMMs to achieve this as each DIMM(for DDR3) can only be accessed via a 64 bit bus. So if you look at your motherboard, you'll see slots for memory; on most Intel boards the channels alternate so that if you wish to achieve dual channel operation you must populate the slots every-other; on AMD boards the first two slot are usually the ones to be populated.
Additional channels increase your theoretical memory bandwidth. (Bandwidth = Bus width x clock speed x transfers/cycle)