I guess I’m misunderstanding the question, but how should a monitor improve the training speed?
Same here. You are staring 90% of your coding time at an IDE (or a black terminal using vim), so the monitor is personally quite irrelevant as long as it can display your favorite resolution.
It’s of course an entirely different story for gaming etc.
Also, somewhat related to this topic.
PS: I’m also removing links from both posts, as these are pointing to the same vendor and I cannot rule out the possibility of these posts being advertising.