According to this site, I can enable the DCA option in the BIOS using a program. However, the program was written for Intel 5000, 5100, and 7300 chipsets, while I have a X5570 chipset. I've gone through the datasheets (321322.pdf), but I cannot find the "DCA register". The DCA MSR appears to be applicable for 5570 as well.
Is there a "DCA register" in the 5500 chipset, and if so, where is it?