because those are BX boards it's "iffy" If your video card will take the 89mhz agp clock, IF your ram will do 133mhz, if all your pci devices will take that kind of abuse, if your motherboard will take it, and if your bios will take it.
same suggestion comin from me. I've not been overly happy with either Abit or Microstar (2 bad boards out of 3 from MSI, and not a single "good" abit out of the dozen or so I've used). But that Asus board is one of the best for stability, price and speed. If you go flip-chip, look at the Asus Cusl2