[SOLVED] Does old ram work in a new motherboard?

[ButifulDog]

So because my old system cant run much im making a newer system and had a simple question.
Can old ram work on a newer motherboard? I dont want to waste so much money quickly so just wanted to know.
(Im going to be using an Asrock b450 steel legend and trying to use ddr3 2 4gb sticks at 665 mhz).
And also is the amd ryzen 5 2600 compatible with this motherboard.
Im quite new to pc's and ive checked some people said it wouldnt so just want to make sure.

 

[taeioum]

No, sadly they aren't. Motherboards are made for only one version, may that be DDR2, DDR3 or DDR4. The little slot in the bottom, between the copper contacts have different locations for all DDR versions, so the DDR3 sticks won't fit into DDR4 RAM slots and vice versa. The B450 chipset motherboards all have DDR4 slots. The Ryzen 5 2400 is fully compatible with that motherboard though.

 

[ButifulDog]

Ok thanks and what ram should i get that isnt like 100 dollars its kind of a budget build so im kind of confused. Dont want to mess it up. And is a 600W PSU going to be enough for a gtx 1650 and the ryzen 5 2600?