system
A chat on subreddit /r/pcmasterrace
human
That’s a gaming gpu, not cost effective for ML, one optimized for that is better

Or rent from cloud
gpt
Nothing is cost effective for ML. If you are a single person who works on AI projects, it is a great card. It beats the V100 in most tasks, which is likely what they would be using in the cloud. No more subscription cost and if you want to game on the side or work on any simulation or 3D projects you will also be able to do that.  For true large scale ML operations, everyone just has MacBooks and all computation is server-side. If you are actually buying a single card for your own personal use the 4090 is very valid.