3d card+quadro or matrox combo, is possible?

hi guys, im daytrader, and im using a 4 monitor config,extended desktop, my card now is a 3870X2 4 dvi, that runs ok, but noise is horrible,and all my pc is built as noiseless(bqt power plant, zalman cpu cooler) and theres no silent cooling aftermarket solution,
i was thinking about a new 3d video card with a silent cooling solution- some 8800 gtx and artic cooling fan ..( cose i want to use the same pc for some gaming too ;P) and adding a multi screen solution like the nvidia nvs 450, fanless an very very low power consumption.
i ve searched hard on the web but cant find out if this kind of config can work

my idea is 3d graphic for main monitor( the one for playing when not working) and the other 3 via nvs 450

can un help me? do u know is this kind of card mix is possible? thx
PD: a matrox triple head to go isn t my solution cose low max resolution for 3 displays
the nvs 450 allows 4 X2500res 30" max monitors
thx