Simple MSI 645 Ultra Question...

what i just want to know is 1:1, 4:5, 4:3, how much is our pci/agp on those ratios.

these settings are for the fsb and the memory speed only. this will not affect your pci/agp speeds. if fsb is 133, using the 1:1 will run the memory @ 133, using 4:5 will run the memory @166. either way, your pci/agp remain the same (133/4 = 33.3 for pci, 133/2 = 66.6 for agp).