Is DDR4 RAM compatible in a DDR3 RAM slot?

But the default specification says i have 4gb ddr3 l memory so now which is best for 2nd ram slot ddr4-2400 or lpddr3-2133? 0

MAINBOARD GIGABYTE B760M D3HP DDR4 • Socket LGA1700 for Intel 14th, 13th & 12th Gen Processors • Intel B760 • DDR4

ddr4 in ddr5 slot This ensures a seamless match between your CPU and our motherboards for optimal performance Socket DDR4 series Industrial Motherboards ATX · Micro ATX

ddr4 in ddr3 slot CPU Support: 10th Gen Intel Core Processors · RAM Support: DDR4 2933 MHz · Graphics Output: HDMI, DVI-D, D-Sub · 4 SATA3, 1 Ultra (PCIe Gen3 x4 &