No, the ASRock B450M HDV is not compatible with an R5 2600/2600x.
No, the ASRock B450M HDV is not compatible with an R5 2600/2600x.
Lower the voltage on the CPU and avoid pushing it beyond its limits. Skip overclocking the IGP and steer clear of high SOC voltages.
They rely on the memory controllers from the 1600, yet the chip from the 2600 is involved. In terms of speed, it's about 99% of what the 2600 offers.
I don't know, but a B450 board should work fine. I'm using a B350 without many problems—it performs better than the B450 Tomahawk Max I had before. Probably no one can give you a definitive answer on this, as Ryzen motherboard compatibility really depends on a lot of factors.