its definitaly slower...i was looking to getting a 5200 for my second pc, but after i tried it out (was buying from a friend) i found my geforce 2 ultra was much much faster in 3dmark 2k1...of course the fx has dx 9 support but other than that....~5 and ~6 gb/s of mem bandwidth (for the nu/ultra respectively) just isn't going to cut it these days...
-Vivan