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 4GB||RX 480 8GB||R9 390 8GB||GTX 1060 6GB||GTX 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 4GB||RX 480 8GB||R9 390 8GB||GTX 1060 6GB||GTX 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.
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.