Ordered an HIS 9800PRO what can i expect???

Hi,after long posts i was adviced to get a 9800pro as it proved good results with FS2004,so i ordered an HIS 9800pro can i expect good results moving from GEFORCE 5200FX????I consider good FPS is acheived only at 25-30FPS and anything below that will be jerky what about smoothness will i see any stutters again?how does it go with heavy weather ,scenery and addon aircrafts like PMDG737?and lastly whats the best drivers for it?my specs:P4 3GHZ 512mb DDR ramsmsi neo2-p 865 motherboard MSI geforce fx5200 (which will be replaced ofcourseby the 9800PRO)