As first advertised, the NVIDIA GeForce MX250 was supposed to be a system-on-chip GPU series leveraging “cutting edge power efficiency and performance” gaming technology. With its optimized configuration, it supports DirectX 12 and is tailored for 4K displays.
I would characterize it as being mediocre at best. While it does have some cool features, they are outweighed by drawbacks that will be significant for most users. It’s disappointing because there is no other viable desktop replacement graphics card in this price range which offers these features without an equally crippling tradeoff.