AMD Radeon RX 9050 4GB tested: 8GB model is 37% faster on average
New tests have surfaced for the 4GB cut-down version of the AMD Radeon RX 9050. It is crucial to note that this specific 4GB configuration is not available as a standalone retail product; AMD reserves this version for OEM systems, whereas the retail market will only see the 8GB model.
Memory and Bus Width Disparity
While the core silicon remains the same—featuring 1,024 Stream Processors and boost clocks up to 2.6 GHz—the memory subsystem tells a different story. The 4GB model is restricted to a 64-bit interface with 18 Gbps GDDR6, resulting in 144 GB/s of bandwidth. In contrast, the 8GB retail version doubles the bus width to 128-bit, providing 288 GB/s.
According to 18-game testing by Hardware Unboxed at 1080p Low settings, the 4GB model averaged 78 FPS (with 55 FPS 1% lows), while the 8GB model averaged 107 FPS. This represents a 37% performance advantage for the 8GB variant in average frame rates.
OEM Availability and Buyer Caution
An investigation by Toasty Bros revealed that XFX also produces an RX 9050 4GB variant found in CyberPowerPC desktops. This confirms that the 4GB version is actively used in prebuilt systems. For consumers purchasing ready-to-ship PCs, it is vital to verify the exact VRAM and bus width, as both the 4GB 64-bit and 8GB 128-bit versions share the same AMD Radeon RX 9050 branding.
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