News [REVERSED] AMD says X470, B450 WILL support Zen3

The Exciting Future of AMD Socket AM4

In 2016, we made a pretty bold commitment to you: we would continue to support AMD Socket AM4 until 2020. It was a big promise, especially given what people were accustomed to with other platforms. In the four ensuing years, the humble Socket AM4 has been on an incredible trajectory: 4X more...

community.amd.com

AMD Confirms Ryzen 4000 'Zen 3' Desktop CPU Compatibility With X570 & B550 Motherboards - No Plans To Support X470, B450, X370 Chipsets

AMD has announced that its next-gen Ryzen 4000 CPUs based on the Zen 3 cores will be supported by X570 & B550 chipset based motherboards.

wccftech.com

This is kind of a big deal. It's not the end of the world because it's likely that, just like with B350 and X370, some motherboard manufacturers will make it work, but I think the net/net is people that bought B450 boards expecting to go to Zen 3 may be disappointed


EDIT: AMD has reversed this decision and decided to enable motherboard manufacturers to upgrade 400-series motherboards to support Zen3. Details to be unveiled later.

 

[DwarfLord]

What I'm wondering is if it's possible to flash a new bios with a processor which is not supported with said bios.

Example :
- current situation : 2400G with compatible bios
- flashing the new bios (which is not compatible with the 2400G)
- remplacing the 2400G with a more recent processor (4700G for example), post bios flash

?

 

[ermac318]

What I'm wondering is if it's possible to flash a new bios with a processor which is not supported with said bios.

Example :
- current situation : 2400G with compatible bios
- flashing the new bios (which is not compatible with the 2400G)
- remplacing the 2400G with a more recent processor (4700G for example), post bios flash

?

The 4700G is a bad example because it's not a Zen 3 processor (it will be Zen 2 + Vega). But lets say you wanted to go from your Ryzen 2600X to a 4700X in the future.
You would boot your 2700 in the motherboard, flash the BIOS with the new Zen 3 BIOS, then after flash is complete, shut it down and swap CPUs. Then it should boot again.

 

[DwarfLord]

The 4700G is a bad example because it's not a Zen 3 processor (it will be Zen 2 + Vega). But lets say you wanted to go from your Ryzen 2600X to a 4700X in the future.
You would boot your 2700 in the motherboard, flash the BIOS with the new Zen 3 BIOS, then after flash is complete, shut it down and swap CPUs. Then it should boot again.

Yeah, my example was not the most accurate, I agree.
In fact, the core of my question was if the bios flash would finish correctly even if the new bios is not compatible with the currently installed processor. You think so ?

 

[ermac318]

Yeah, my example was not the most accurate, I agree.
In fact, the core of my question was if the bios flash would finish correctly even if the new bios is not compatible with the currently installed processor. You think so ?

I don't know how else you could do it. Old BIOS doesn't support new chip so it's impossible any other way. I believe the BIOS is read entirely into memory on boot, which is why you can flash the BIOS at all.