We're used to FSR being widely available across a broad range of GPUs, but the next generation of AMD’s upscaling and frame generation technology is reportedly supported on the upcoming RX 9070 series cards, which include the RX 9070 and RX 9070 XT. This is an interesting move from Team Red, especially when NVIDIA’s equivalent, DLSS 4, is confirmed to be supported across all previous RTX cards, including the 20 series.

An update on this exclusivity comes from X, where users have spotted a DLL file from an unofficial AMD trial driver that appears to contain an early implementation of FidelityFX Super Resolution 4. This unofficial driver first surfaced in late December, and while it initially went unnoticed, users have now begun pointing out the “amdxcffx64.dll” file within the trial driver. User Osvaldo Pinali Doederlein claims that the file contains implementations for both FSR 4.0 and FSR 3.1, with the former being significantly larger (17 MB) than the latter (6.5 MB).

According to Osvaldo, FSR 4.0 uses a machine-taught algorithm with an 8-bit floating-point implementation. Only RDNA4 reportedly supports WMMA (Wave Matrix Multiply Accumulate), which is required for this level of precision. This suggests that, unlike Team Green, AMD is likely to make FSR 4 an exclusive feature for their upcoming RDNA 4-based GPUs.

We won’t recommend downloading the unofficial drivers

The driver is no longer available through official channels, but a Guru3D forum page provides a link to the driver (hosted on Station-Drivers) and instructions for installation. However, since this involves downloading a GPU driver that doesn't come from the official vendor, we advise against it.

That said, one thing to note is that the latest official beta driver no longer includes this file. This suggests that the unofficial driver, published before the end of last year, was likely intended for CES demos. At CES, FSR 4 was showcased running on a machine paired with an RX 9070 series GPU in Ratchet & Clank: Rift Apart. Since this feature is not supported on RDNA3 GPUs, downloading the driver wouldn't make much sense – it's essentially unusable by anyone except those with access to the Radeon RX 9070 series.

Is AMD on the right track with their RX 9070 series cards?

So far, AMD seems to be struggling, and much of it stems from their RX 9070 series GPUs. The community has already voiced backlash after AMD's first official update turned out to be a delay announcement. The new timeline pushes the launch to March 2025, a month after NVIDIA's RTX 5080.

With the introduction of FSR 4, AMD once again seems to be trailing NVIDIA, which is heavily integrating AI into both current and previous GPUs. While FSR 4 is undoubtedly a significant improvement over FSR 3.1, AMD's decision to limit its availability to RDNA 4 GPUs might raise further concerns. This exclusivity could make it harder for AMD to win back favor, especially as NVIDIA continues to expand its technology's reach across a wider range of hardware.

On the flip side, Nvidia continues to lock a few DLSS features behind the latest series – namely frame generation. DLSS Frame Generation is only available on the 40 series and newer, while the new and improved Multi Frame Generation is exclusive to the 50 series cards. There does remain some hope that Nvidia will bring frame gen to the 30 series; it hasn’t been ruled out yet at the very least.

About the Author

Hassam Nasir

Hassam boasts over seven years of professional experience as a dedicated PC hardware reviewer and writer.