First, check in your motherboard manual and confirm that you have the ram in the correct slots. Sometimes you alternate, sometimes you don't. I believe it should then auto dual channel. However, there are options for ganged and unganged. Ganged is a single 128 bit channel while unganged is dual 64 bit channels. My board forces unganged, but I think CPU-Z should correctly identify ganged vs. single channel.
As for the second part, see if there is a setting in the BIOS to set speed and voltage by EPP. if not, you will have to go in and manually set the timings, voltage, and speed of the ram. Look online to see which settings to change and then follow your motherboard manual on how to change them.
Hey thanks for the reply. My RAM was configured under the A2/B2, so I turned ganged on. That didnt work so I switched the RAM modules to the A1/B1 config. That didnt work either under ganged or unganged. CPU-Z says single channel, is there a chance CPU-Z is just reading something wrong?
It is possible. Try some other programs maybe. Also, when my computer first turns on, the first screen does a RAM check. At that point it says dual or single and 64 or 128 bit (your board may have an optional logo instead).
I'm not sure for that particular board, but I have seen it both ways. My Asus NForce 4 SLI was Ram/Empty/Ram/Empty for dual and my recent Gigabyte boards have been Ram/Ram/Empty/Empty for dual. It may be up to the board manufacturer, but your manual should specify.