Trying to upgrade my GPU in my machine

[Gyrosmoothie]

Hi, I am looking at upgrading my GPU and CPU in my PC. I am looking at upgrading to a 3060ti when it comes available next year. My problem is that the case itself is very tiny, I am afraid that I won't be able to fit a new card in there. Does anyone have any experience upgrading the card to something that is larger than what comes stock? Or am I gonna need to build or purchase a whole new PC?

Thanks

[Prométhée]

Hello

this is a recorded response (macro))
we need the exact model of your computer, and the product number
To find it follow this
for a desktop computer

HP Desktop PCs - How Do I Find My Model Number or Product Number? | HP® Customer Support

However, we cannot tell you if a graphics card will fit, although the dimensions are not available.
It is likely that your computer does not have the required power supply, too.

It will be necessary to check once the model is found, if it will actually fit, depending on the manufacturer, the dimensions are not the same