A decent msi b450 with 1st or 2nd gen ryzen CPU and 16gigs would set you back around £250 and you would have the option to upgrade to a 3rd/4th gen in a few years. Selling both your old am3 CPUs and ram would lower the cost aswell so maybe around £150 when all said and done.
I’m really out of touch with CPUs, not really looked since 2011/12, what should I be looking for?
Cheers,
Nigel