I recently purchase an ASRock 939Dual-VSTA motherboard along with an AMD FX-55. I choose this board for its backwards AGP compatibility. When I ran 3dMark03 and compared the results with my old system (Epox, Socket A) I was unimpressed, the results had only when from aprox. 4,000 to 7,000.
I have a friend who also has the AMD FX-55 and without overclocking is able to get 13,000 in 3dMark03. True, he has dual channel and PCI Express but there should not be that big of a gap. I looked further into the situation and Everest is reporting my DDR 400 as DDR 200 even though I have the speed correctly set in the BIOS. Even Sandra is reporting my memory bandwidth as half of what is should be.
My BIOS has a feature called, "Flexibility Mode" in the Memory section, I have to have this enabled or my system will not boot I am afraid that this maybe the cause.
I figured that maybe the case. I just hope that this new board would be as flexable as my old Socket A Epox motherboard. I'll give that a shot tonight when I get home from work and I'll post the results. I really was hoping to save $200+ on RAM.