@Vladimir02 , welcome to the Community.
Here is a HP Knowledge Base article that will tell you what to consider when upgrading the video card: https://h30434.www3.hp.com/t5/Gaming-Knowledge-Base/Upgrade-Video-Card/ta-p/7481981
You can find the information on how to measure the space for the video card in the article. There should always be enough space to allow for good airflow. This is extremely important with the newer, high power, cards. They develop a lot of HEAT!!
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I am not an HP Employee!!
Intelligence is God given. Wisdom is the sum of our mistakes!!