Epyc uptake in data center is still sluggish: "Mercury estimates Epyc revenue was $57.66m in the second 2018 quarter vs $36m in the prior quarter."
For reference Intel's data center revenue in Q2 2018 (of which a large part is their Xeon CPUs) is $5.5 billion, growing 6% QoQ or 27% YoY. Don't expect any miracles yet.
My maths isn't the greatest, but isn't that a 60% increase in EPYC revenue for Q2? If we see Q3 revenues reach about $90m then you can argue 60% growth QoQ, that's 10 times what Intel are seeing. I'd say that was miraculous already.
Now yes, we are comparing AMD's revenue millions to Intel's revenue billions, but AMD literally started from nothing (0.3% server share in 2017 or something?). And for the likes of Dell, HP, Microsoft and Cisco to take the plunge on EPYC 1, I don't see it being a one-off purchase.