DDR3L will work in the 3847. The RAM is dual voltage so it should be fine. And to confirm it, Crucial has the DDR3L RAM shown as compatible on their product page here. As for the GTX 1650, it requires a 300W PSU which I believe is the standard PSU in the tower.
so i wanted to upgread my pc to gtx 1650 and 16 gb ram ddr3l so does those two work on my pc or no because my pc normal ram is 8 gb ddr3 so does ddr3l Works too or no pls answear soon
inspiron 3847 upgread