can cards really affect ouput?

[kazz0817]

ive been backing up a lot of dvds with perfect results, but when i make an avi file into a dvd, i am always left with the slight jidders (not very noticable) ive got a geforce mx420 graphics card at the moment,

this weekend i started to buy parts to build my own PC the first part i got was an ATI Radeon 9800, i put it into my current system to make sure it worked etc....and forgotten to swap the cards back over - hence forgetting to put my geforce back in, i have done a couple of dvds with avi files, still not realising untill a day after, and put my geforce back in. when i compared the dvds id done with the radeon installed, they was perfect, no judder, excellent picture and sound etc, whereas the ones id done with my geforece, was also excellent in every way except for the juddery frames here and there, weird? or does graphics make a differance?

[BJ_M]

nope - none