Speed and memory
In our performance index the Radeon 890M (integrated) scores 5.5 and the GeForce GTX 770 scores 5, which makes the Radeon 890M (integrated) about 10% faster. That is a small gap, below what most people notice without a frame counter.
The Radeon 890M (integrated) has shared GB of video memory and the GeForce GTX 770 has 2 GB. That is a small difference and unlikely to decide anything.
In our estimates for popular games at 1080p on High, the biggest gap is in Call of Duty (16 against 8 fps), and the smallest is in Fortnite (65 against 60 fps). Games that are light enough to run above 200 fps on both cards show little difference at all.