Let's say it's the same increase as Vega 64 to Radeon VII , you'd still end up with a ~4.9GHz R7 2700X successor with ~ 4.6GHz all core clocks
Radeon VII = 1800MHz
Vega 64 = 1550MHz ; 13.4 TFLOPs vs 12.5 TFLOPs
For same power +16% clockspeed , which is less than the 7nm projection of +25% performance for same power and half the power for same performance
In practice the Radeon VII is around 20-30% faster than Vega 64.
Also take into account that there's $130 boards that can support this new CPU (i.e. B450 Pro Carbon , B450-E STRIX) that aren't utterly stripped down in feature-set and if you're staying under 130W just about any B450 board would suffice. If you want a board that can properly support a i9-9900K you'll need a Z390 board (the typical ones are Gigabyte Aorus Pro, Asrock Z390 Phantom Gaming 6 / Extreme 4 if you can deal with lack of debug features
, Asus z390-A , MSI Z390 Edge).
MSI and ASUS already rolled out the new AGESA which is rumored to be for Ryzen 3000 series. That means a May/July launch is highly likely.
Originally Posted by https://www.msi.com/Motherboard/support/B450-GAMING-PRO-CARBON-AC
Release Date 2019-03-06
Description - Support new upcoming AMD cpu.
Originally Posted by https://www.asus.com/us/Motherboards/ROG-STRIX-X470-F-GAMING/HelpDesk_BIOS/
ROG STRIX X470-F GAMING BIOS 4406
Update AGESA 0070 for the upcoming processors and improve some CPU compatibility.
Originally Posted by https://www.asus.com/us/supportonly/ROG%20STRIX%20B450-E%20GAMING/HelpDesk_BIOS/
ROG STRIX B450-E GAMING BIOS 2008
Update AGESA 0070 for the upcoming processors and improve CPU compatibility.
ASUS strongly recommends installing AMD chipset driver 18.50.16 or later before updating BIOS.