oky .....so here we are .....u didn't tell what motherboard is that ...i mean company name and model no. ......but anyways i found out its mercury
PI865GVM-L .....here is the link tell me if i m wrong ..
http://www.kobian.com/products.php?productid=425
now this mobo has intel 865GV chipset and u know what .....Intel 865 GV chipset doesn't support AGP 8X ...here is the intel link
http://www.intel.com/design/chipsets...+chpsts_865gv&
now click on the image (intel hub architecture) that shows logic diagrams ....and how they interact...... there is no AGP 8x ....also there is no mention of AGP anywhere related to this chipset on intel website .....that is why(i guess) this is categorised as "VALUE CHIPSET " from intel guys ......now the chipset which has AGP 8X support is 865G (and not 865 GV) ...to verify this go the following link look in the image here in image and features u will find AGP 8X ....here is the link
http://intel.com/design/chipsets/865...e+chpsts_865g&
so u don't have the AGP 8X ....that is the ...moral of all story ...and then why do u see the blank at agp 8X slot ????? ....that is because ..perhaps mercury is using the same PCB (printed circuit board ) to manufacture all the 865 chipset varients ....just doing minor adjustment for different other mobos ......see other motherboards in the list and u will see that clearly this motherboard has same layout as anyother board in category(coz of same PCB ) ........here is the link
http://www.kobian.com/products.php?categoryid=12
So u can't add an AGP 8X slot in ur mobo as far as i know
coz ur chipset doesnot support it .! (and microteck guys are not great engineers like asus ....who got a breakthrough of acomplishing PAT technology in 865 chipset ...so i don't think there is any innovation involved here from microteck)........and microteck saying that it has AGP 8X engine (thats what u wrote) ....u can ask microteck what it means ....i can't unerstand that ! ......moreover ur mobo only intel extreme graphics
(not even intel extreme graphics 2) ...
so as far as i can understand the things u have to get a new mobo .......!