4 Things to Check Before Using Two 8GB RAM Sticks on a 16GB Board
Confirm the board supports 8GB per slot Most DDR3/DDR4 boards do, but cheap or older models may cap each slot at 4GB or 2GB. Check the manual or spec sheet.
Verify the RAM generation matches DDR3 and DDR4 are not interchangeable. Using the wrong type will not work.
Match the speed rating Mismatched speeds will either fail or force both sticks to run at the slower speed.
Don’t trust the slot sticker alone Always look up the official specs from the manufacturer. Stickers can be misleading.