Anyone out there who has a crosshair iv extreme id really appreciate help with my setup. I have talked to asus customer support, read what seems like thousands of forum posts, googled for days and i cant get my new build to boot/post for anything!! I have a amd 1100t with this motherboard, a standard western digital caviar green 1tb hard drive, thermaltake level 10 gt snow edition case, twin sapphire hd 6870's, corsair 1200watt modular psu, corsair airflow pro memory cooler monitor, corsair memory fan, pioneer bluray writer, 78n1 rosewill card reader/writer, an the main problem, i cant get a straight answer from anyone, some places say the crosshair iv extreme supports up to 2000oc ram, some places say it supports up to 2133mhz ram, i cant get a straight answer. All i know for SURE, is that my gskill 2133mhz pc3 17000 doesnt work, i have 16 gb of ram that i cant use in this build that i just blowed $250 on and it wont work. I have done everything i know how to do, id love to see a boot screen, god id love that. Please help if you have this setup an know what dimm configuration i can use that will ensure a post. Thanks guys.