As I stated, The double and single in that chart do not allude to dual-channel. That is single or double SIDED memory.
Hey, don't take my word for it, just search the Internet. By using more than one stick of memory with chips on more than one side, on a Socket 754 motherboard, you will effectively slow your memory down.
I'm really just trying to help out here...
Note the memory chart on the 939 version and how it shows what memory sizes support dual channel, it also has that same statement "there are some rules while using dual-channel DDR", but continues on to explain:
DIMM Module Combination
Install at least one DIMM module on the slots. Each DIMM slot supports up to a maximum size of 1GB. Users can install either single- or double-sided modules to meet their own needs. Please note that each DIMM can work respectively for singlechannel DDR, but there are some rules while using dual-channel DDR (Please refer to the suggested DDR population table below). Users may install memory modules of different type and density on different-channel DDR DIMMs. However, the same type and density memory modules are necessary while using dual-channel DDR, or instability may happen. Please refer to the following table for detailed dual-channel DDR. Other combination not listed below will function as single-channel DDR.