- May 4, 2000
Where things get a little confusing is that at that time, the B550A chipset was said by AMD's Robert Hallock to be a rehash of the B450 chipsets but for OEMs, only featuring PCI-Express 3.0. The specifications we found now, however, point to the motherboard having PCI-Express 4.0 on all fronts. Therefore, it's possible there may be only one B550 chipset, and that the "B550A is for OEMs" argument was meant to throw the community off.
Hopefully the pricing on these new motherboards will be a lot more reasonable than the X570 series were when they launched. The B550 chipset seems to have just about everything most people would want as far as PCIe 4.0 (namely one 16X slot and M.2).Whereas the X570 motherboards have PCI-Express switching that brings PCI-Express 4.0 lanes to all the PCI-E slots, and can split them across multiple slots if necessary, the B550AM Gaming from ASRock only delivers PCI-Express 4.0 support on the uppermost slot and to the M.2 slot.