Not exactly. GPU get power entirely from the motherboard. The PCI slot on motherboards only allows external connectivity to an expansion bus for hardware devices such as graphics cards, sound cards, network cards, etc.
I just looked at MSI, EVGA, ASUS and Zotac GTX 1650 Super s All of them need a 6 pin auxillary PCIe power connector. Even the stock-from-Nvidia card uses a 6 pin.
What brand is the one you are considering??