I'm running x58 with an Asus p5t Deluxe v2 and a x5675. I have Patriot Sector 7's 1600mhz. At stock it only runs at 1333 anything higher bios wont post. I have it overclocked at 4.6 with a base clock of 200 at 1603mhz. The only multiplier that is locked is 24 I use 23. Works perfect and stable...
Dude dont listen to these guys. I have the rx580 special edition and I ran it with both cables vs just the 8 pin and after thorough testing I only use the 8 pin. Seems to work the same if not better for me because both draws more power and I only have a 600 watt PS with an over clocked 4.6...