|"Hey weren't some super 7 boards dual channel?"|
If I'm not mistaken, some boards based on the Aladdin 7 chipset supported dual channel. What is it that you're trying to do...just play around/experiment? Obviously there are better board/CPU combos available.
Something to watch for is the IDE transfer rate...*most* (not all) of these old boards only support ATA-33. ATA-66 wasn't a standard til the late 90's. So what you may gain by overclocking will be offset by the slow data rate of ATA-33. Of course, you could always add a controller card.