When comparing AMD Radeon RX 460 vs NVIDIA GeForce GTX 1080, the Slant community recommends NVIDIA GeForce GTX 1080 for most people. In the question“What are the best GPUs for gaming?” NVIDIA GeForce GTX 1080 is ranked 5th while AMD Radeon RX 460 is ranked 7th. The most important reason people chose NVIDIA GeForce GTX 1080 is:
In benchmarks, the GTX 1080 FE (Founder's Edition) is a hair slower than *two* GTX 980 units in SLI configuration (the difference is 2% in 3DMark 11). In gaming tests, the GTX 1080 FE achieved 61fps average in Need For Speed 2016 on high settings at 4K resolution. For comparison, the AMD Radeon R9 Fury scored 40fps (34% lower), and the GTX 980 scored 34fps (44% lower than the GTX 1080 FE). The only slowdowns you will encounter in maxed out 4K graphics is during extremely demanding scenes. The GTX 1080 FE also supports GPU Boost 3.0 which lets it ramp up performance even higher as long as the temperature doesn't rise too much.
Specs
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Pros
Pro Good entry-level card for 1080p gaming
The RX 460 offers a very decent performance in recent video games with a 1080p resolution, although the card may struggle with maximum settings. Anno 2205 manages to squeeze an average framerate of 45 fps out of the RX 460 in 1080p and medium graphical settings. Similar results can be seen for Far Cry Primal at 49 fps and 47 frames per second for The Witcher 3. In Grand Theft Auto V, the RX 460 manages to achieve an average framerate of 100 fps.
In short, the AMD Radeon RX 460 is perfectly capable of playing games at a 1080p resolution, albeit not on high or ultra settings.
Pro Offers great value
The 2 GB version of the RX 460 retails for a bit over $100, which is an extremely competitive price tag in the entry-level segment. Performance-wise, the RX 460 is a bit faster than a 750 Ti but costs about $30 less.
Pro Asynchronous shaders improve performance in recent games
The RX 470 offers concurrent/parallel CPU to GPU communication in DirectX 12, Mantle and Vulkan with asynchronous shaders for the stream processors. Asynchronous shaders allow the developers of games to maximize the potential of AMD's new Polaris architecture and this technology is used to optimize DX12, Mantle and Vulkan performance in recently released compatible games. In short, developers can now use multiple task queues and split up GPU power across multiple tasks at the same time.
Pro Cheapest card that supports H.265 decoding and HDMI 2.0
The RX 460 is currently the cheapest graphics card on the market with support for H.265/HEVC decoding (and thus Ultra HD resolutions with a high 10-bit color spectrum) and a HDMI 2.0 port. Next to gaming, this makes the RX 460 very suitable for playing Ultra HD video content.
Pro Epic 4K performance
In benchmarks, the GTX 1080 FE (Founder's Edition) is a hair slower than two GTX 980 units in SLI configuration (the difference is 2% in 3DMark 11).
In gaming tests, the GTX 1080 FE achieved 61fps average in Need For Speed 2016 on high settings at 4K resolution. For comparison, the AMD Radeon R9 Fury scored 40fps (34% lower), and the GTX 980 scored 34fps (44% lower than the GTX 1080 FE).
The only slowdowns you will encounter in maxed out 4K graphics is during extremely demanding scenes.
The GTX 1080 FE also supports GPU Boost 3.0 which lets it ramp up performance even higher as long as the temperature doesn't rise too much.
Pro Well optimized
NVIDIA properly optimized the GTX 1080 FE for DirectX. This means that games supporting DirectX 11 will see a slight performance boost, but more-so for the upcoming games using DirectX12.
Pro Very power efficient
While performance is higher than its competitors, the GTX 1080 FE actually uses less power. The maximum amount of power consumption this GPU requires is around 185 watts, which is an improvement of over 35% compared to NVIDIA's previous generation high-end graphics card, the GTX 980 Ti. This also plays a positive role when choosing a power supply, or determining if you need to upgrade your existing PSU.
Cons
Con Disappointing Vulkan performance
Vulkan is a graphical API that allows developers to better communicate with the GPU, which generally results in performance improvements compared to the more standard DirectX 12 or OpenGL API's. Some recent games offer support for Vulkan, such as Doom, Dota 2 and Ashes of the Singularity.
The RX 460 is considered to be a low-end graphics card and doesn't perform noticeably better in Vulkan. In Doom with Ultra Settings and 1080p resolution, the RX 460 is able to achieve an average framerate of 33 FPS, with a minimum of 19 and a maximum of 76. When using Vulkan in the exact same situation, the RX 460 has an average framerate of 35 fps which is an improvement that not noticeable in-game, and a lower minimum of 10.5 fps and a higher maximum of 174 frames per second. This very small difference is quite surprising, as the stronger RX 470 and RX 480 siblings of the RX 460 do perform significantly better under Vulkan.
Con 4 GB version adds little value
The AMD RX 460 is available in both a 2 GB and 4 GB version, but the latter version adds little value to this graphics card. Despite doubling the available video memory, performance differences in games at a 1080p resolution are very minimal. Compared to the 2 GB version, RX 460 cards with 4 gigabytes of memory retail for about $40 more and have a slightly higher power consumption due to the extra memory chips as well.
Con Disappointing performance-per-watt ratio
The RX 460 uses AMD's new Polaris 11 architecture and while this new generation of chips is more energy-efficient than previous-generation GPU's, the overall performance-per-watt ratio disappoints. The TDP (thermal design point and maximum power consumption) of the RX 460 is measured at 75 watts. In terms of gaming performance, the RX 460 offers similar results to the previous-generation R7 370 chip but unfortunately, power consumption is roughly the same.
Con No native support for 3- and 4-way SLI
SLI - short for Scalable Link Interface - is NVIDIA's technology of combining the power of two or more identical GPU's in order to reach a better performance. In other words, you can use multiple GTX 1080 video cards to further increase performance. Although the GTX 1080 supports 2-way SLI without a problem, NVIDIA does not offer support for 3- and 4-way SLI. The included SLI-bridge which serves as a connector between the two cards, is only compatible in a 2-way configuration. 3-way and 4-way SLI are possible but aren't supported. You'll have to use an older SLI-bridge found on older GeForce models and you'll need to generate an 'Enthusiast Key' on NVIDIA's website. However, NVIDIA does not guarantee a 3- or 4-way configuration will provide any noticeable benefits.
Con Disappointing performance improvements when using Vulkan
Vulkan is a graphical API that allows developers to communicate better with the GPU, which in theory should result in performance improvements compared to the more standard DirectX 12 or OpenGL API's. The GTX 1080 doesn't perform particularly better in Vulkan however, and the difference with the standard OpenGL is minimal at higher resolutions.
Doom is one of the first (and only) titles with support for Vulkan and serves as a good benchmark for OpenGL vs Vulkan performance. In 1080p Full HD resolution and Ultra settings, the GTX 1080 is able to reach an average framerate of 140 FPS in OpenGL. Vulkan improves the frame rate to 166 FPS, a fifteen percent increase. Starting from 1440p resolutions however, performance improvements using Vulkan are very minimal and not noticeable during gameplay. 1080 does pretty well at 109 FPS in 1440p, while Vulkan only marginally improves this result with 145 FPS, a 5% increase. For comparison: AMD's RX 480 card does perform significantly better with Vulkan and higher frame rates, with a performance boost of 29.3%. Similar results are seen when testing in 4K. In this case, the GTX 1080 using Vulkan actually performs worse than the standard OpenGL, with 59 FPS and 60 FPS respectively. AMD's RX 480 is better optimized, as it's able to achieve a performance increase of 24.7% in this scenario.
In short, Vulkan performance seems particularly useful when gaming in Full HD, but it doesn't provide much performance benefits otherwise. It would appear that NVIDIA's Pascal architecture isn't optimized for high-resolution Vulkan gaming.