So like a long time ago i upgraded from i5-7400 to Ryzen 7 3800x and also a New Motherboard, which is a B450-plus.
I have 16 GB Team Group RAM, 2400 Mhz. Also an RTX 2060, 2 SSD, and 1 HDD. For PSU I've 600W Chieftec.
On my i5 I had boot times like 7-8 seconds, now 16-17.