**FidelityFX Super Resolution 4 (FSR 4)** and **PlayStation 5 Pro Super Resolution (PSSR)** are both advanced upscaling technologies designed to enhance the visual quality of games on compatible hardware. While they share the goal of delivering sharper, more detailed images, they have distinct characteristics and implementations.

### Key Differences:

* **Developer:** FSR 4 is developed by AMD, while PSSR is a proprietary technology developed by Sony.
* **Hardware Dependence:** FSR 4 is designed to be hardware-agnostic, meaning it can work on various GPUs from different manufacturers. PSSR, on the other hand, is specifically tailored for the PlayStation 5 Pro and its custom RDNA 3-based GPU.
* **Implementation:** FSR 4 is a software-based upscaling solution that relies on advanced algorithms to reconstruct images. PSSR leverages dedicated hardware on the PS5 Pro for upscaling, potentially leading to faster performance and improved image quality.

### Visual Comparison:

* **Image Quality:** Both technologies aim to deliver high-quality images, but direct comparisons are difficult due to the unique characteristics of each implementation. Early impressions suggest that PSSR may offer a slight edge in terms of image sharpness and detail, especially when upscaling from lower resolutions.
* **Performance:** PSSR's hardware-based approach could potentially lead to better performance compared to FSR 4, especially in demanding games. However, the actual performance difference will depend on the specific game and implementation.

### Availability:

* **FSR 4:** Currently, FSR 4 is in its early stages of development and is expected to be available for select RDNA 3 graphics cards in the future.
* **PSSR:** PSSR is exclusively available on the PlayStation 5 Pro and is integrated into select games that support the technology.

### Conclusion:

Both FSR 4 and PSSR are promising technologies that can significantly enhance the visual experience of gaming. While PSSR may currently offer a slight advantage due to its hardware-based implementation and exclusive availability on the PS5 Pro, FSR 4's hardware-agnostic nature and potential for future improvements make it a technology to watch.

**Note:** This comparison is based on current information and may change as both technologies evolve.