How to Easily Enable FSR 4 on Radeon RX 6000 GPUs with a Simple Hack While Maintaining Performance

Activating AMD’s advanced upscaling technology on older Radeon graphics cards has recently become significantly easier. A newly identified method enables users to utilize FSR 4 even on RX 6000 series GPUs, which previously faced challenges with the upscaler.

Unlocking Improved Visual Quality in Gaming with AMD RDNA 2 GPUs

Not long ago, it was confirmed that FSR 4 is compatible with Radeon RX 7000 series GPUs running on Windows. This implementation involved utilizing INT8 model files that were leaked from AMD’s internal resources. Interestingly, this technique also appears to function well with RDNA 2 architecture, which includes the RX 6000 series. Initial reports indicated that these GPUs were not optimally responsive to the latest upscaling technology, suffering performance degradation. However, a recent breakthrough has emerged, providing a simple solution.

This isn’t the first attempt to activate FSR 4 on RX 6000 GPUs; earlier efforts resulted in a significant performance drop of 10% to 20%, leading to a subpar gaming experience. Instead of the conventional approach that involves complex tools like OptiScaler alongside custom modded DLL files, a member of the Computer Base community has simplified the process with a straightforward technique that avoids sacrificing performance.

Install a packing program like 7-Zip or WinRAR on your system.
Unpack the old Adrenalin driver using 7-Zip or WinRAR via the right-click context menu.
Unpack the new Adrenalin driver using the same method.
In the old driver directory, navigate to Packages > Drivers > Display > WT6A_INF > B395348 to locate amdxc32.dll and amdxc64.dll.
In the new driver directory (note that the folder label “Bxxxxx”differs across versions), replace the existing files with the old ones.
Finally, proceed to install the new driver using the unpacked archive.

By swapping the files amdxd32.dll and amdxc64.dll in the newest Adrenalin driver, users can enable FSR 4 support for RX 6000 GPUs. Following a simple series of steps—including unpacking both the previous and current driver versions—allows for this enhancement.

The user who executed this method showcased the improved visual fidelity of RX 6000 GPUs, particularly the RX 6800 model. He shared several videos demonstrating image quality across different FSR 4 presets, comparing these outputs directly with the Radeon RX 9070, which natively supports FSR 4. The results indicate that the image quality achievable with FSR 4 at native and quality settings is quite comparable to the native performance of the RX 9070, yet impressively without any performance loss.

Game	AVG FPS	P1 FPS	P0.1 FPS
Kena: Bridge of Spirits (FSR3.1.5 Quality)	35.2	22.5	16.9
Kena: Bridge of Spirits (FSR4 Performance)	33.0	22.9	17.4
Kena: Bridge of Spirits (FSR4 Quality)	29.9	20.4	16.2
Kena: Bridge of Spirits (TAA Native)	29.9	19.4	15.9

So for me, on the whole, the RX 6800 and the RX 9070 are equivalent in terms of image quality. If the RX 9070 looks slightly better in one place, it’s probably because the INT8 version from the leak is a bit older and not as polished as the current FP8 version. This is not an FSR4 Light for me, and cannot be compared to XeSS on Intel or other GPUs.

– mario_mendel34 (via Computer Base)

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