AMD FSR 4 Deep Dive Mod Reveals the Real Price of Enhanced Image Quality

Basio badr

ago 9 hours

AMD FSR 4 Deep Dive Mod Reveals the Real Price of Enhanced Image Quality

Computer Base has conducted an in-depth analysis of AMD’s FSR 4 technology on both RDNA 2 and RDNA 3 GPUs. The findings reveal a notable improvement in image quality, albeit with a measurable performance cost.

Understanding AMD FSR 4 Performance Impact

FSR 4, despite unofficial support, was tested through modded versions injected into unsupported graphics architectures. The tests focused on RDNA 2 (Radeon 6000 series) and RDNA 3 (Radeon 7000 series) GPUs. There was a noticeable frames per second (fps) decrease, ranging from 9% to 13%, when FSR 4 was activated.

Effects on Different Graphics Cards

Computer Base’s tests measured fps degradation on various models. With FSR 4’s Performance mode, the RX 7800 XT saw a 9% to 12% drop, while the RX 6800 XT noted a 10% to 13% reduction. In contrast, the RX 9060 XT, which supports FSR 4 through the FP8 format, experienced only a 3% to 5% fps loss.

Enhanced Image Quality with Trade-Offs

Despite relying on the Int8 format instead of FP8 hardware acceleration, FSR 4 delivers superior image quality compared to FSR 3.1. However, it doesn’t match the native RDNA 4 FP8 implementation, resulting in some instabilities.

Game Compatibility Challenges

Computer Base tested FSR 4 on 18 games.
Fourteen games successfully operated with FSR 4.
Failures often occurred due to complex anti-cheat software.

The visual benefits of FSR 4 weren’t without issues, as motion artefacts became more evident. Despite these challenges, the overall image quality remained sharper than FSR 3.1 in many scenarios.

Future Prospects for FSR 4

The findings suggest that FSR 4 is viable on older RDNA architectures, despite unofficial implementation. Computer Base notes that RDNA 2 performed unexpectedly well, hinting that RDNA 3 might not utilize its full potential.

Ultimately, FSR 4 offers a quality upgrade for those willing to navigate its complexities. Enthusiasts can look forward to potential official support, simplifying this innovative technology’s use for broader audiences.