Being a "mainly AMD" guy, I have worked with only a few 845 mobos and those were some time ago. So my first post was based on the OP's statement that his mobo has an AGP slot.
Anyway, I don't think the poor performance experienced by expertno.1 was due to the port speed. True, 8x has twice the bandwidth of 4x, but today's graphics do not fully utilise the capability of even 4x, much less 8x. It must have been due to some other reason.
As an analogy, imagine a case where you need a pipe to pump water over a short distance. If you're going to pump only a few liters per minute, it doesn't really matter if the pipe is 10cm or 14cm in diameter. The amount of water (data) is simply too small to make a noticeable difference.
|