Using your specs
Open the Can I run it checker, type the game, then start typing your graphics card name and pick it from the list. Add your processor and RAM if you can, because they make the answer more accurate. The Detect button reads the name your browser reports, which saves typing for most cards.
If the exact name is not in the list, choose the closest one. Cards one step apart are usually within 15% of each other. Laptop graphics cards are listed with the word Laptop in their name, and a laptop card is slower than the desktop card with the same number.
For a score of the whole PC, use Rate my PC. To see every game your parts can play, use What can my PC run.