PCI-Express Resizable BAR, pioneered by AMD, seems to be a magic bullet for unlocking additional double digit FPS gains. NVIDIA finally released their implementation for GeForce Ampere cards. In our PCIe BAR review we test the feature on RTX 3090, 3080, 3070 and 3060 Ti, in 22 games, at Full HD, 1440p and 4K.