Gigabyte ga x99 designare ex socket lga2011 3 71 channel hd audio atx motherboard specifications cpu support for intel core i7 processors in the lga2011 3 package 2l3 cache varies with cpu please refer cpu support list for more information chipset intel x99 express chipset memory 8 x ddr4 dimm sockets supporting up to 128 gb of system memory support for up to 256 gb of system memory when using registered dimms due to a windows 32 bit operating system limita