cryoburner
Judicious
Being a rumor, there's no guarantee of accuracy. : 3I've also heard rumors that B550 wont' feature PCIe4.0. Is that still considered an accurate rumor?
Logically though, full PCIe 4.0 support is probably not yet a good fit for mid-range boards, at least when it comes to slots controlled by the chipset. It sounds like the feature is adding to both the cost of the X570 chipset and to the boards themselves, and for most people will be of little use for years to come. That doesn't sound like a feature you would see on boards targeting the $100 and below range.
It does seem probable that B550 would include 4.0 support for at least the first x16 slot though, and possibly for an NVMe slot. Those will use lanes provided by the CPU, so they won't be reliant on chipset support, so the boards can continue to use a less expensive chipset from ASMedia for additional 3.0 slots. That also means the chipset should require less power and in turn less cooling, and with the 4.0 slot(s) close to the CPU, the board may not need to be as resilient against interference either. A B550 board with 4.0 support on just those lanes probably wouldn't need to cost much more than a B450 board.
Keep in mind that clock speeds are not everything. AMD actually released a CPU with 5GHz boost clocks almost 6 years ago, the FX-9590. Even first-gen Ryzen processors far outperform one of those despite having substantially lower clock rates though, since they can perform more instructions per clock. At least according to AMD, Ryzen 3000 should not only increase clock speeds a little, but more importantly boost IPC by around 15%. If that holds true in most real-world applications, then a 3000-series processor at 4.4 GHz would perform like a 2000-series processor clocked to over 5 GHz. And that could easily mean per-core performance that competes more directly with Intel's i7s.I really just want AMD to make a CPU that can hit 5 GHz or higher so I can chose either that or Intel for a gaming build.