Can you combine DDR3 and DDR4?

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Is DDR4 RAM compatible in a DDR3 RAM slot? The Question: I'm looking to get a RAM PLEASE SUBSCRIBE!--- 3gwkYSk Buy DDR4 RAM-- 2VPHh1j

best 188 slot DDR3 RAM uses a 240-pin connector, whereas DDR4 uses a 288-pin connector A motherboard with DDR4 compatibility won't work with DDR3 RAM and motherboard perfectly Learn more about DDR4 Predator Memory: ddr4predator