This is what was listed in my Mobo manual:
*Support for DDR3 2200/1333/1066/800 Mhz memory modules.
I purchased: G.SKILL Ripjaws Series 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
The only reason I purchased this particular Gskill ram is because a person on newegg posted under the reviews that "It's almost like this memory was made for this motherboard" (referring to the Gigabyte X58a UD3R.


*Support for DDR3 2200/1333/1066/800 Mhz memory modules.
I purchased: G.SKILL Ripjaws Series 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
The only reason I purchased this particular Gskill ram is because a person on newegg posted under the reviews that "It's almost like this memory was made for this motherboard" (referring to the Gigabyte X58a UD3R.