If you tell us which cards you are looking at, we can tell you which ones you can buy that will fit with the case's front fan installed.Just been looking at this a bit more and not sure if my case would house the upgraded card.
My current GPU is 280mm long. Upgraded GPU is 356mm
Case states but I am not entirely sure what the without front fan refers to.
GPU Clearance Supports GPU up to 341mm/366mm(without front fan)