4 DIMMs does not equal Quad-channel.
I see in AMD's presentation Quad-channel is supported by chipsets, but I am not aware of a current AMD consumer/hedt chip with 4 memory channels.
True, but the Threadripper requires the TRX50 platform, so I still don't understand what is operative about the statement that the X870E chipset supports quad channel memory.
Good point. Makes me wonder if they'd consider a Threadripper version that uses that chipset, since the Non-Pro Threadripper have been in a weird spot ever since Ryzen went up to 16 cores. An AM5 Threadripper might not make sense because one of the appeals were the much bigger amount of PCIe lanes, but I wonder if they would pair the X870E with a new socket for Zen 5 Non-Pro Threadrippers.