XPS 8930, confused about vram

I have a 8930 which has a geforce 1660 ti in it. I would like to get into doing AI stuff. The 1660 does not have vram. I have been looking at a nvidia geforce rtx 3050. I have looked at the specs at different websites and they mention that it has 8gb of ram and GDDR6 but it says nothing about vram. How do I tell if it has vram? I think the specs say  8gb of video ram. Is that the same as vram? And why I asking about this card, it says the power supply should be at least 550. Mine is the standard 460. I guess if I buy the card, I should get a 750 psu. And one last thing. I guess my motherboard will handle the
graphics card. A guy on youtube installed a rtx 3060 in his 8930. Sorry for the dumb questions. 
..