Unless AMD put Zen 3 support in launch-day 520/550 BIOS or made flash-back mandatory, 620/650 boa4ds will be needed to clearly delineate boards with out-of-box support. The 600s could even be nothing more than a re-brand for that single specific purpose.My guess is B650 won't launch at all, considering how AMD is handling CPU compatibility with B550.
For which there's no indication that they won't...Unless AMD put Zen 3 support in launch-day 520/550 BIOS ...
I was writing about having Zen 3 support (at least enough of it for the boards to be capable of self-updating from USB) right off the B550/A520's launch, not Zen 3's launch. Adding support later on would be of little use for the million(s) of boards sitting in warehouses around the world, going to be a PITA for people who don't have a stash of older-gen chips.I really do expect all current 500-series boards to have Zen 3 compatible BIOS available when the CPUs are launched. (Just like the vast majority of 400-series boards had Zen 2 compatible BIOS available at the Matisse launch.)
The x570 could use a power efficiency boost, so that is at least one thing x670 could improve on. For b650, the two obvious improvements would be PCIe4 uplink and 2-4 extra flex-IO lanes to give board manufacturers enough IOs to work with to fill an ATX board.Around Dec2019/Jan2020 is the last I've heard anything about the x670 chipset. Is there anything new about it? Will it just be x570+? I'm considering waiting for x670 or B550 when the Zen 3 comes out.
You shouldn't expect B650 boards anytime soon. B550 should be releasing not too long before the Zen 3 processors make their debut, so it will most likely be the mid-range chipset for the 4000-series. It's unlikely manufacturers would design 60+ B550 boards if they expected to be replacing them with B650 models around the end of the year. B450 launched over a year after B350, B550 is launching nearly two years after B450, and I would similarly expect B550 to remain the current generation of mid-range boards for at least a year.
550/520 were delayed due to ASMedia not being able to produce PCIe 4.0 chipsets on time right? I could see X670 releasing, if only to serve as a quick "refresh" 1:1 replacement of X570 motherboards, now using ASMedia chips instead of AMD's modified I/O chip (and thus removing the need for active chipset cooling, even if it was never a real issue), along with any minor updates such as HDMI 2.1/DP 1.4 or such.
Last thing I read (months ago) was that it is cancelled.Around Dec2019/Jan2020 is the last I've heard anything about the x670 chipset. Is there anything new about it? ...
Unless AMD has made BIOS flash-back mandatory on A520/B550 or changed 500-series BIOS/AGESA for Zen 2 and up to enable unsupported CPUs to at least get to BIOS so the BIOS can self-update, not releasing new chipsets with new CPUs creates unnecessary confusion about CPU support and frustration when people buy parts that should work together according to the spec sheets but don't due to lack of pre-loaded and often poorly advertised update.releasing an X670 effectively side by side with B550 and A520 would just be an unecessary recipy for confusion.