can i put ddr3 in ddr4 slot
The difference between DDR3 and DDR4 | PC Gamer
You cannot put DDR3 in a DDR4 RAM slot, so if you are buying a newer processor, such as an eighth or ninth generation Intel, or an AMD Ryzen processor, you will need to purchase DDR4 RAM to go with it.
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Many modern computers will use DDR3 or DDR4 RAMS ... If you have more than one RAM slot, remove the RAM in one slot and put it in a different slot.
Can DDR4 ram fit into a DDR3 motherboard and be used?
I have a computer with two sticks of DDR4 RAM, and someone just gave me some old RAM that's DDR3. Can I use both in the same computer?