AMD's FSR 4 upscaling technology delivers 276 frames per second (fps) on the Radeon RX 9070 XT, a 5% decrease compared to FSR 3's 290 fps. Despite this performance dip, FSR 4 shows significant improvements in visual fidelity and has outperformed Nvidia's DLSS 3 in super-resolution quality. FSR 4 incurs a 37% increase in GPU usage but remains a small fraction of the overall frame time. Currently, FSR 4 is exclusive to RDNA 4 GPUs, and there is potential for AMD to backport it to older GPUs, which could enhance its competitiveness against Nvidia, especially in handheld gaming PCs with RDNA 3.5 integrated graphics.