Question about Gigabyte GeForce RTX 2070S Gaming OC

No specific information can be found on the Internet. However, HP sells graphics cards with a maximum length of 10.5" / 26.7cm for this system. Because of this short history, I would recommend that you open the case and measure it. Then you can also check whether you have the right power connection. With the built-in 700W power supply unit, you should actually have sufficient "headroom".