Did AMD enable pcie x16 gen5 on B650 chipset motherboards after latest bios update?
Some revision of The same b650 gigabyte board have pcie 5, some not. You have to look carefully in The specification note.
Some B650 boards can have m.2 pcie5 slot. B650E - m.2 and pcie x16 gen5 Mine B650M aorus elite ax (rev. 1.0) in spec has only m.2 gen.5
Yeah. AMD doesn’t require motherboard makers to build B650 motherboards to the specs required for PCIE 5.0 on anything other than a single M.2 slot but the CPU does support it if they build the board to the required spec (electrical trace signal integrity, power delivery, whatever) and enable it in firmware. IIRC A620, B650, and X670 series chipsets are all the same chip (PROM21) with double packaging for the higher tier (two PROM21 chips), which is why compared to B650 the X670 chipset has exactly two times the chipset based USB and SATA controllers. So I assume the required PCIE5 redrivers are all there.
Last I checked, Ryzen CPUs are still a true SOC with things like PCIE controllers, memory controllers, and standard IO being on the CPU itself rather than the motherboard chipset. Certain motherboard makers each generation will enable features not officially supported on certain motherboard tiers and AMD will force them to issue a bios update that disables the features to maintain product segmentation.
Yeah. AMD doesn’t require motherboard makers to build B650 motherboards to the specs required for PCIE 5.0 but the CPU does support it if they build the board to the required spec (electrical trace signal integrity) and enable it in firmware. The main PCIE16X slot is directly controlled to the CPU and not through the chipset.
Last I checked, Ryzen CPUs are still a true SOC with things like PCIE controllers, memory controllers, and standard IO being on the CPU itself rather than the motherboard chipset. The additional PCIE lanes added by the chipset are via a switch and I personally don’t count due to the inherent bottleneck.
IIRC different B650/X670 series chipsets aren’t even using different silicon but instead are double packaged for the higher tier, which is why the X670 chipset has exactly two times the chipset based USB and SATA controllers.
Yeah. AMD doesn’t require motherboard makers to build B650 motherboards to the specs required for PCIE 5.0 other than for a single M.2 slot but the CPU does support it if they build the board to the required spec (electrical trace signal integrity, power delivery, whatever) and enable it in firmware. IIRC A620, B650, and X670 series chipsets are all the same chip (PROM21) with double packaging for the higher tier (two PROM21 chips), which is why compared to B650 the X670 chipset has exactly two times the chipset based USB and SATA controllers.
Last I checked, Ryzen CPUs are still a true SOC with things like PCIE controllers, memory controllers, and standard IO being on the CPU itself rather than the motherboard chipset. Certain motherboard makers each generation will enable features not officially supported on certain motherboard tiers and AMD will force them to issue a bios update that disables the features to maintain product segmentation.
Gigabyte did kinda the same on B350. Added PCIe 4.0 support with a new BIOS until AMD forbid them from doing it and they released a new BIOS locking the feature again.
Yup. I had on B450 gen4 on early bios
B650 doesn’t mean PCIe 5.0 support is non-existent. The requirement for B650E is that both the PCIe x16 slot and NVMe slot are PCIe 5.0-compliant
That is just GIGABYTE recycling the bios front-end across the multiple different SKUs.
Even if the Gen. 5 support would suddenly become available, it would make no difference unless the board is built for it, i.e., has the required hardware (Gen. 5 re-drivers).