Can you install a pc graphics card in a laptop, so for example a gtx980! The but has connections on the side and in the laptop are these connections I do not think so?
Please stop this PCIe adapter and n PC power supply
No, you can generally no desktop graphics card IN a laptop.
There are some laptops with Thunderbolt 3 connection but the possibility to use these Externally.
https://www.netzwelt.de/...blick.html
but then you also need an external GPU housing with power supply (cost again ~ 300 euro)
https://www.gamingscan.com/best-external-graphics-card/
Or you just take a Stink nomrlane PCIe adapter without stupid case buys for 50 euro ne bquiet power supply and comes off significantly cheaper
Can you too.
But for the ignorant user (possibly never built anything PC Technical) complicated + fear what to break. If the laptop has any connections internally for it.
In most cases: no.
A PC graphics card in most cases does not even fit in the laptop case. But there are a few gaming laptops in which a PC graphics card is installed, but these have been designed from the very beginning.
But there's still the possibility to connect a corresponding external graphics card.