Justin_222 :
hi i'm new here and i have a question: i have 8gb of ram in my motherboard and have a 2gb gpu. But i want to buy a new one but i don't know how much vram i need on my new gpu, do i need 3,4 or 8 gb of vram on my gpu? that was my question.
The motherboard RAM and the GPU's dedicated RAM aren't relevant to each other.
How much VRAM depends on what GPU you're getting otherwise. The more powerful the GPU, the more RAM you want and less powerful GPUs frequently have more RAM than they can possibly use, making it nothing more than a selling point.