I have a sys with a 975X Platinum MB, a Core 2 E6400\nand Patriot PDC21G8500ELK memory. It runs fine at\nDDR2 880 settings but refuses to run at DDR2 1066\nsettings. Does anyone have this combination working\nat full speed? I am using the Patriot settings:\n5-5-5-9 2.3 volts. I also have the 7.2 BIOS on the\nMB. Unfortunately, I don't have any other PC2-8500\nmemory to test with, so I can't tell if it is the mem\nor the MB. Any help appreciated.