Asrock unveils mainboard for 'Skylake' with DDR3 and DDR4

I tried to install a ddr3 into a ddr4 slot and tried to boot it ddr3 slot CPU Socket All, SP6, SP5, SP3, G34, FT3, C32, AM5, AM3+ Socket Count All, 1P DDR3 Memory Channels All, 12, 8, 6, 2 System Memory Specification All, Up ddr3 slot Search by Memory Product Line ; Memory Type Memory Type DDR3 ; Speed · Speed · 1600MTs ; Total Capacity Total Capacity 4GB ; Kit Kit Single Module

ddr3 in ddr4 slot DDR2 vs DDR3 RAM