https://wccftech.com/nvidia-geforce-gtx-1050-3gb-official-launch/

NVIDIA has officially introduced a second model in their GeForce GTX 1050 (non-Ti) family. The new model is based on the same Pascal GP107 GPU that the GTX 1050 uses but has better core specs, a cutdown memory interface and increased VRAM (via Videocardz).

It looks like NVIDIA is still adding new GeForce 10 series cards amidst rumors of a next-gen launch. The updated GeForce GTX 1050 improves upon everything that the older model offered. The main reason for launching this variant is that the previous 2 GB model has serious memory limitations and with 3 GB, users can do slightly more productive work and games can perform better without the memory buffer being all gobbled up by the application.