Different DIMM clock for Channel A/B in Z77-D3H

[Azeitona]

Is it possible to use DDR2 clocks on channel A and DDR3 clocks on channel B, each channel with its dual channel* working?
_{Motherboard: GA-Z77-D3H; BIOS Screen: http://i48.tinypic.com/hsnuch.jpg}
^{* Obviously, I'm assuming that each 'channel' corresponds to A and B, each with two slots, and that that's what's represented on BIOS}