|What it all boils down to, as jackbomb said, is the FX 5200 the card will probably work fine in the 1X / 2X AGP slot on the GA-6BXE.|
All AGP slots and video chipsets on cards that support 2X AGP support 1X AGP - not many video chipsets / AGP slots that were made that supported only 1X , so 1X is often omitted in specs.
Your mboard and AGP support will only be able to run it at whatever it's ratings are at 2X, max, but on the other hand, in the real world, a video chipset running in 4X mode does not perform twice as good as one running in 2X mode, and a video chipset running in 8X mode does not perform four times as good as one running in 2X mode.
The info at the second last link in response 2 shows you the various arrangements of the bottom of the AGP card and the slots in them where the contacts are. In most cases, AGP cards these days use the universal one. The bottom of the FX 5200 card will probably fit fine in the AGP slot in the GA-6BXE.
This says a card with the FX 5200 chipset is AGP 3.0 compliant:
The AGP 3.0 spec (supports 1.5v, and .8v - 4X / 8X AGP) - is also AGP 2.0 compliant and will work on your 1x / 2X AGP slot
- if and only if the card's video chipset also supports 3.3 v - 1X / 2X AGP - your older (first released earlier) chipset does
- if and only if the bottom of the card has a universal arrangement - your card probably does - or if the AGP slot on the mboard has a universal arrangement.
The AGP 2.0 spec (supports 3.3v and 5v - 1X / 2X / 4X AGP) is probably backwards compatible with the older AGP spec of your AGP slot.