Unless the ram manufacturers have come up with some kind of magic, DDR3 is DDR3 regardless of how it is packaged; dual/triple/quad channel-wise, not speed-wise.
You drop a "quad" channel kit into a motherboard/CPU that only supports dual channel and it will just run in dual channel mode. You take something like this, Newegg.com - Crucial Ballistix 4GB 240-Pin DDR3 SDRAM DDR3 2000 (PC3 16000) Desktop Memory Model BLE4G3D2001CE1TX0
and drop 4 of therm in the appropriate board and they will run in dual/quad (3 or 6 for triple channel) channel despite not being branded as such.
The one good thing about it now over when dual channel first came out is that for the most part the "kits" are generally cheaper than buying individual sticks.