The launch of the Radeon RX 480 has been disastrous because at the moment only few reference models are on sale with limited support of Overclocking. The most anticipated custom models are not yet on sale, but if still something which can save the name of AMD is the Radeon RX 480 with 4 GB of memory, equally powerful but cheaper. However, we are facing the same problem, it is unknown when this model will come.

AMD Radeon RX 480 8Gb Vs Radeon RX 480 4Gb

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Thanks to Digital Foundry we can see a performance comparison between the Radeon RX 480 with 8 GB GDDR5 vs. Radeon RX 480 4 Gb, recalling that the version of the 8 GB has a memory frequency of 8.00 GHz provides a bandwidth of 256 GB / s while the 4GB model have 7.00 GHz memory frequency resulting in 224 GB / s, (loss of 12.5 percent bandwidth), which would influence the performance (loss of 1-4%), but it depends on the game.

1920 × 1080 (1080p)RX 480 4GBRX 480 8GBR9 390 8GBGTX 1060 6GBGTX 970 4GB
Assassin’s Creed Unity, Ultra High, FXAA         50.4         50.8         48.6         58.2         51.3
Ashes of the Singularity, Extreme, 0x MSAA, DX12         45.9         47.7         52.1         45.9         40.5
Crysis 3, Very High, AAWS T2x         68.8         70.1         75.4         78.7         72.5
The Division, Ultra, SMAA         53.6         54.8         49.8         56.6         50.2
Far Cry Primal, Ultra, SMAA         57.1         58.7         65.1         65.6         56.2
Hitman, Ultra, AAWS, DX12         71.4         73.2         75.6         65.8         59.0
Rise of the Tomb Raider, Ultra, AAWS, DX12         59.8         61.2         66.6         75.1         69.7
The Witcher 3 Ultra, Post AA, No Hairworks         60.5         61.2         55.6         68.4         60.7

 

2560 × 1440 (1440p)RX 480 4GBRX 480 8GBR9 390 8GBGTX 1060 6GBGTX 970 4GB
Assassin’s Creed Unity, Ultra High, FXAA         31.0         33.8         33.7         37.4         32.7
Ashes of the Singularity, Extreme, 0x MSAA, DX12         40.7         42.7         46.2         41.2         35.9
Crysis 3, Very High, AAWS T2x         41.8         43.1         48.7         47.7         43.8
The Division, Ultra, SMAA         38.1         39.0         37.8         39.9         36.1
Far Cry Primal, Ultra, SMAA         40.7         42.3         46.7         45.0         39.6
Hitman, Ultra, AAWS, DX12         52.2         55.0         56.8         48.1         41.5
Rise of the Tomb Raider, Ultra, AAWS, DX12         41.7         43.0         46.0         49.2         46.1
The Witcher 3 Ultra, Post AA, No Hairworks         43.5         45.3         42.9         48.2         31.9

As we can see, the performance of the Radeon RX 480 4 GB is practically similar to the RX 480 Radeon 8GB, expected return knowing that memory works at a lower frequency, but if we overclock memory frequency of 4Gb variant it will virtually give the same performance.

Since there is no significant loss of performance, it is easy to say that a 4 GB VRAM variant can easily play any game without problem at 1080p and 1440p resolution.

In summary

The Radeon RX 480 4 GB is the best option in terms of price / performance ratio, the problem is that the retail price of 4Gb variant is still unknown. If it will be about $50 cheaper than the GeForce GTX 1060 then its pretty good option.