<< No documented incompatabilites. Search the forum too and you'll find the thread AZGamer linked to. Also a thread listing people who managed to get their 8500 up problem free, with 7 or 8 K7S5A posting to it. Maybe in AZGamer's mind, adding bells and whistles somehow fixed this supposed "AGP implementation" problem. ATI no doubt rewrites the AGP spec with every graphics card revision. Suuuuure. Or maybe there's no actual incompatibility. Believe what you want, just don't lie blatently about it. >>
No documented incompatibilities, barring some VGA cards and Power Supplies, is the case - not what you stated. By the same thread, there are no documented incompatibilities with VIA chipsets.
The 8500 is based on a completely different core and implementation.
Find any other chipset/graphics card combo with an equal number of problems, and then your arguement will have merit.