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The NVIDIA GeForce GTX 1080 is the first available graphics card using the 16nm Pascal architecture and is positioned as the top GPU in the high-end range. The 1080 has 8 gigabytes of GDDR5X memory, three DisplayPort 1.4 connections, a single DVI-D port and an input for HDMI 2.0b.
The GTX 1080 Founders Edition is the reference graphics card and is made by NVIDIA. This edition features a standard backplate and the reference cooler. However, other GTX 1080 models are also available by sub-brands such as MSI, Gigabyte, Asus and more with the same GTX 1080 chip, and a different cooler. Some of these GTX 1080 chips might also be overclocked. A full overview of all graphics cards with the GTX 1080 chip can be seen here.
SpecsUpdate
Pros
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 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 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.
Recommendations
Comments
Flagged Pros + Cons
Con More expensive and slower than non- Founders Edition cards
Non-founders cards will be cheaper and have custom coolers that are cooler, quieter and allow higher clock speeds.
Pro Very quiet operation
The GTX 1080 FE runs at or under 41 dB during idle, and at or under 49.4 dB when stressed in benchmarks. The actual results may be lower - the CPU cooler sometimes was louder which skews the results.
The only time noise could be considered an issue is at high fps when "annoying coil whining" sounds occurred.
Pro New architecture - Pascal
The GTX 1080 FE if the first unit to be produced with Pascal. Maxwell used a 28nm manufacturing process, and Pascal shrinks that down to 16nm. This sets the standard for future graphics cards, and allows for more transistors to fit into the same space as previous generations. This also helps boost performance and - to a lesser extent - power consumption, heat, and noise.
Con Produces a lot of heat
During sustained heavy use, the graphics card produces a lot of heat (around 82 degrees Celsius). The Founders Edition has a cooler which reduces temperatures around it, but its reach is fairly short.