I have Gigabyte GA-F2A85X-UP4 motherboard - http://www.amazon.com/Gigabyte-GA-F2A85X-UP4-Chipset-Motherboard-Display/dp/B00A6O7ZGW/ref=sr_1_3?ie=UTF8&qid=1386014082&sr=8-3&keywords=Gigabyte+GA-F2A85X-UP4. How many graphic cards can i have on it? 2,3,4?? Im planning to buy
three SAPPHIRE VAPOR-X R9 280X - http://www.sapphiretech.com/presentation/product/product_index.aspx?pid=2024&lid=1