A lot of people seem to be getting bent out of shape at these being cheap and therefore expecting poor performance Vs Intel.
This is nothing like that it's just the scaleble modular design means pricing follows a very simple format.
About twice the power costs about twice as much. Each time.
This is because AMD are making 8 core parts and them sticking them in the infinity fabric.
Intel with are straight up making 20 core monolithic CPUs, meaning their pricing scales down from the top rather than building from the bottom.
So Amd chips maybe cost 50 dollars each then they stick 4 of them on a PCB then charge you 1000 for it. But you still get loads of performance.
Intel 20 core maybe costs 500 dollars straight up thanks to complex monolithic CPUs having exponentially more chances of having errors. Vs a quad core based on same architecture and process.
So an 18-16-14 core are all that same 20 core chip that costs Intel 500 or so.
AMD have engineered a game changer here folks assuming they don't balls it right up.
It means dual GPU cards should In theory not be shitty as they'll be using the infinity fabric as well.
Sorry writing isn't my forte but hopefully you get the jist.
AMD have made god damn processor Legos,that's what Vega and Ryzen are, building blocks that fit together perfectly.
So you could build a "little house", or"Lego land "
AMD could could put 64 cores in a single package,128 etc etc.
The scalebility on depends on how much the customer wants to spend and power delivery/cooling etc.