In an 18-game 1080p Low comparison published September 22, 2026, the Radeon RX 9050 8GB averaged 107 frames per second (fps), compared with 78 fps for the 4GB model. That puts the 8GB result 37% higher, using the 4GB result as the baseline. The 8GB card also led at the Lowest preset, while the two configurations differ in memory bandwidth as well as capacity.
Two RX 9050 configurations, one name
The 4GB RX 9050 is reported as an OEM configuration supplied in prebuilt computers; the 8GB model is the retail version. Both carry the RX 9050 name, but their memory specifications—and measured performance—are different.
Here, GB refers to graphics memory, or VRAM, rather than the computer’s system RAM. That distinction matters when checking a prebuilt PC’s specifications: the model name alone does not tell you which RX 9050 configuration it contains.
What the 18-game test measured
The 8GB card averaged more frames per second in both reported 1080p settings. At Low, it averaged 107 fps to 78 fps for the 4GB card; at Lowest, the averages were 147 fps and 111 fps. The reported leads were 37% and 32%, respectively, with the 4GB result as the baseline in each calculation.
| Measure | RX 9050 4GB | RX 9050 8GB | Test condition |
| VRAM | 4GB GDDR6 | 8GB GDDR6 | Graphics memory |
| Memory bus | 64-bit | 128-bit | — |
| Memory bandwidth | 144 GB/s | Up to 288 GB/s | — |
| Average frame rate | 78 fps | 107 fps | 18-game average, 1080p Low |
| 1% lows | 55 fps | 78 fps | 18-game average, 1080p Low |
| Average frame rate | 111 fps | 147 fps | 18-game average, 1080p Lowest |
| 1% lows | 82 fps | 111 fps | 18-game average, 1080p Lowest |
The comparison ran on a system with a Ryzen 7 9800X3D processor, PCIe 5.0 and DDR5-6000 memory. The 1% lows reflect performance during the slowest frame-rate moments, alongside the average.
The difference is not just VRAM capacity
The 4GB configuration has a 64-bit memory bus and 144 GB/s of bandwidth. The 8GB version has a 128-bit bus and up to 288 GB/s. Since both memory capacity and bandwidth change between the cards, the test does not isolate the effect of VRAM capacity alone.
That distinction helps explain why a game’s memory use is not the only factor to consider: the memory bus and bandwidth differ, too. In some tested cases, the 8GB version performed better even when a game used less than 4GB of VRAM.
Game results vary
The overall averages do not describe every game equally. In Cyberpunk 2077: Phantom Liberty at 1080p Medium, the 8GB model averaged 80 fps, versus 74 fps for the 4GB card—an 8% lead.
In 007 First Light at 1080p Low, the 4GB model averaged 38 fps. It reached 60 fps in that test with FSR Balanced upscaling.
What to check in a prebuilt
The 4GB card was obtained inside a CyberPowerPC Gamer Master prebuilt. When a PC listing names an RX 9050, check the full specification for the VRAM capacity: the shared model name covers configurations with different memory amounts and bandwidth. For these two versions, the 8GB card had the higher averages in both 1080p test settings.
