xorg+amd64+nv5700

[Zoran Kolic]

Dear all!
I have 5.4, amd64 version and question
about graphic cards. After upgrading
the box, there was ati9550. It is not
necessary for me, but... The picture
was a little bit hazy. I went to the
shop and replaced it after little testing
for nvidia 5700. I don't realy need this
too. The situation is better, still the
picture is not crispy I would like. 
Am I gone crazy or should tweak something?
Driver = "nv".
Old ati7000 worked perfect and gave clear
picture in all ocasions.
What info should I post?
Best regards

                     Zoran