BIOS above 4g setting https://www.google.com.hk/search?newwindow=1&safe=strict&ei=EAMxX9TgHo77wAPWsKxI&q=asus+motherboard+no+above4g+decoding&oq=asus+motherboard+no+above4g+decoding&gs_lcp=CgZwc3ktYWIQAzoHCAAQsAMQDVDzswRYoLUEYNW8BGgBcAB4AIABRogBjAGSAQEymAEAoAEBqgEHZ3dzLXdpesABAQ&sclient=psy-ab&ved=0ahUKEwjUqIromZDrAhWOPXAKHVYYCwkQ4dUDCAw&uact=5 https://forums.tomshardware.com/threads/gpu-is-not-recognized-by-the-motherboard.3528737/ https://www.asus.com/search/results.aspx?SearchKey=asus%20prime%20x299&SearchType=Products&Category=Motherboards&IsSupport=False&Page=1 https://www.chiphell.com/thread-1775671-1-1.html http://detail.zol.com.cn/servermotherboard/index399974.shtml 技嘉GA-6PXSVL