is using an Nvidia card on a ati chipset mobo undesirable?

[yallknowho]

how much does it matter or affect framerates if I put an nvidia card on an ati chipset mobo vs nforce chipset mobo?

 

[gigantorebirdie]

Everything I remember leads me to believe it does not make a difference. I doubt ati would cripple their mobo if it sees an nvidia vid card and vice versa, dropping a radeon into an nforce shouldn't make a difference either.