Depends how many memory channels the CPU supports. On a small consumer CPU, no benefit, but start getting up into bigger chips like Threadripper or especially Epyc and some of them support even more than four channels.
(Also, it might be worth noting that I’m pretty sure the Steam Machine only has two RAM slots, let alone channels. 4x8GB won’t even be possible.)
Depends how many memory channels the CPU supports. On a small consumer CPU, no benefit, but start getting up into bigger chips like Threadripper or especially Epyc and some of them support even more than four channels.
(Also, it might be worth noting that I’m pretty sure the Steam Machine only has two RAM slots, let alone channels. 4x8GB won’t even be possible.)