system
A chat on subreddit /r/pcmasterrace
human
I have a friend who is kinda dumb can you explain to ~~me~~ him why it would be bad to run in single channel?
gpt
Dual channel doubles the memory bandwidth. Most motherboards will have 2 direct channels from the 4 or 2 available DIMM slots. The memory controller is able to use both simultaneously. 
There are some quad channel but those are usually for server boards. If a game is cpu intensive dual channel will increase performance significantly.