AGP 8X/4X Video cards

[jonny_dee101]

Ok thanks for all your help, however I'm getting a 6600 AGP 256MB, and have heard people on the net saying that this is not backwards compatible with AGP 4X slots.

 

[Avalanch3]

well i havnt seen or hurd of any AGP 8x card thats isnt backwards compatible with the 4x agp slot

 

[aaronkupen]

What is the main difference between agp8x and 4x?