[Humbl3]

I have weird voltage setting problem with EP45-UD3P Rev.1.1.
My full system can be seen on my sig.

At first, when I was using GTX285, everything worked out very well. I can maintain a rock solid OCing and I can set any value on any field in BIOS and ET6 show the changes on its voltage value in Windows.
My OC setting was 3.82 Ghz + DDR2 1080 Mhz 5-5-5-15 with 2.40B divider, PCI-E clock set fixed to 100 Mhz and all CPU feature was disabled.

Problem arises when I change the VGA card to Sapphire HD4850 Vapor-X. I can't set the Vfsb and Vmch ref anymore. Everytime I set them in BIOS, the voltages will always stuck at their default value when I see them via ET6 in Windows.
My suggestion is the VGA card that may cause this problem. Because I have tried upping its PCI-E clock too in BIOS, but it seems to lock its clock at 100 Mhz and it's unchangeable at all.

I had tried four different BIOS F7, F8, F9, and the latest F9L without any success. And I had tried two boards of the same type, but both of them showed the same error.
Worse thing, when I try to use divider 2.00B or 2.00D, all of the voltages in BIOS even refuse to change even a bit! :(

I think there's some kind of incompability problem in this board (most probably the BIOS) with my current VGA card that causing such a weird problem.
Do anyone here ever have the same problem with this board? I do hope that Gigabyte technical support would investigate this problem further and release a new BIOS that solve it ASAP.

Thanks...