Abit ix38 quad gt cant support 4850x2!!!

system:
Q9550
8gb gskill pi black edition
xfi extreme gamer
750tx corsairs

4850 x2 from sapphire doesnt output signal when pair with this motherboard! i tried it on a gigabyte 780g and it works!, anyone have an idea? I tried every conceivable method swapping everything back and forth and it seems to be the motherboard, I have the latest bios (14).

When i put a 1900xt in one slot with the 4850 x2 on another i was able to install windows xp and it seems the motherboard doesnt even see the card!!, the fan spins up when i turn it on and everything looks normal calling abit right now anyone have a good idea?

LOLcats x4 is a wee bit low and will limit its performance!

yes an 1900xt will work in both x16 slot just not the 4850 x2 i think its an electrical problem. I read a newegg review where a person had to up the voltage to populate all four slot of memory. So tonight i sat there and up the voltage 1 mv per setting per time. Nothing. Time to call it a day and get a new mb?

bios is the lastest version, two of you need to read my original post lol :]