New tests on AMD’s FidelityFX SDK 2.0 reveal that FSR 4 runs slightly slower than FSR 3.

The benchmark, conducted on a Radeon RX 9070 XT, showed that FSR 3.1.5 reached 290 fps while FSR 4.0.2 achieved 276 fps, a 5% performance drop.

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Increased GPU Usage with AI Integration

FSR 4 consumes around 37% more GPU resources than its predecessor.

This spike in hardware demand is linked to its use of AI and machine learning models to enhance visual output.

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Visual Enhancements Compensate for Slower Speed

Despite the reduced frame rates, FSR 4 offers stronger image clarity and sharper details.

While it still falls behind Nvidia DLSS 4, it already surpasses DLSS 3 in terms of visual quality.

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Impact on RDNA 4 and Weaker Systems

For top-tier GPUs, the performance loss is minor.

However, users with weaker RDNA 4 cards or those playing highly demanding games may feel the drop more strongly.

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Future of FSR 4 Beyond RDNA 4

Currently, FSR 4 is limited to RDNA 4 GPUs.

If AMD successfully backports the technology to older GPUs, it could expand its reach and compete more effectively with Nvidia’s DLSS across various platforms, including handheld gaming devices.