I find the 4750G and 4650G come up on eBay often for decent prices. Not too different from the 5000 series PRO chips. I think slightly different cache amounts and of course just a bit slower performance (Zen2 vs Zen3). Still very efficient.

The only thing I’m not sure about is their max RAM amount. I know the 5X50G series supports 128GB (depending on mb), but can’t find any info on the 4X50G series. I assume also 128GB like the non-PRO variants.

Yeah it makes sense. Rarely do people custom build their own office machines. But they are great chips for low power with ECC. That’s a rare thing to find when doing a custom build.

They need to make the PRO variants more accessible this time around. The 5X50G/E were and still are next to impossible to find.