Enhance Your Gaming Experience with SLI and the GTX 1080

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Table of Contents

Enhance Your Gaming Experience with SLI and the GTX 1080

Table of Contents

  1. Introduction
  2. SLI Update: The New High Bandwidth Bridge
  3. What Can You Do With the New Bridge?
  4. Higher Configurations of Displays
  5. Multi-GPU Support with Pascal
  6. Three Modes of Multi-GPU Support in Windows
  7. Multi Display Adapter Mode
  8. Link Display Adapter Mode
  9. Recommendations for Multi-GPU Configurations
  10. The Future of Multi-GPU Scaling
  11. Conclusion

Introduction

In this article, we will be discussing the SLI update and the new high bandwidth bridge for graphics cards. We will explore the benefits of the bridge and how it improves the performance of multi-GPU systems. Additionally, we will delve into the different modes of multi-GPU support in Windows and provide recommendations for optimal configurations. Let's dive in!

SLI Update: The New High Bandwidth Bridge

NVIDIA has introduced a new high bandwidth bridge for SLI configurations. This bridge, called the SLI HP bridge, offers double the bandwidth compared to the previous bridges. It is designed to be compatible with Pascal architecture, allowing for faster communication between GPUs. The interface on Pascal GPUs is faster than that on Maxwell GPUs, enabling the high speed bridge to run at a frequency of 650 megahertz.

What Can You Do With the New Bridge?

The primary purpose of the SLI bridge is to connect multiple GPUs together in an SLI configuration. With the new high bandwidth bridge, both SLI connectors on a GTX 1080 can be connected to two GPUs directly. This allows for higher configurations of displays, supporting resolutions such as 4K, 5K, and beyond. The increased bandwidth of the bridge enables smoother gaming experiences, especially at higher resolutions and refresh rates. By running transactions natively over the bridge, NVIDIA eliminates the need for data to transfer through the PCI Express interface, reducing contention and ensuring a more reliable connection.

Higher Configurations of Displays

Over the years, the bandwidth required to support multiple displays has increased significantly. With the standard bridges, the limit for running a single display at 2560x1440 and 60Hz has been reached. However, the high bandwidth bridge opens up new possibilities. It supports resolutions of 5120x2880 at 120Hz and even higher, allowing users to enjoy immersive gaming experiences on high-resolution monitors. The new bridge ensures that the data transfer occurs directly between the GPUs, resulting in smoother gameplay and reduced latency.

Multi-GPU Support with Pascal

Multi-GPU support with Pascal has evolved to adapt to the changing landscape of Game development. NVIDIA is leading in educating developers about the three modes of multi-GPU support in DirectX 12. The first mode is Multi Display Adapter (MDA) mode, where each GPU acts as a separate logical adapter. In this mode, application developers have full control over workload distribution and synchronization. The driver does not interfere with the application's multi-GPU architecture.

Three Modes of Multi-GPU Support in Windows

  1. Multi Display Adapter (MDA) Mode: In this mode, each GPU is treated as a separate logical adapter. The application has control over workload distribution and synchronization between GPUs. The driver does not modify or optimize the workload distribution.
  2. Link Display Adapter (LDA) Mode: This mode presents multiple linked GPUs as a single adapter to the application. The NVIDIA driver handles workload distribution and synchronization, referred to as SLI.
  3. Explicit SLI Mode: This mode allows the application to explicitly specify the resources to be used across multiple matched GPUs. It offers some benefits over MDA mode when GPUs are closely matched.

Recommendations for Multi-GPU Configurations

Based on NVIDIA's recommendations, two GPUs should be the focus for multi-GPU configurations with Pascal. This is because game development has become more complex, with inter-frame dependencies that make scaling beyond two GPUs challenging. While NVIDIA will continue to work on three- and four-way SLI configurations, the performance gains may not be as significant as with a two-GPU setup. Developers are encouraged to optimize their games for two-GPU SLI configurations to deliver the best experience for users.

The Future of Multi-GPU Scaling

The future of multi-GPU scaling is uncertain, as it depends on the evolving landscape of software and game development. While the current focus is on two-GPU configurations, NVIDIA remains committed to exploring and optimizing multi-GPU scaling beyond this limit. As game engines and software models change, it is possible that multi-GPU scaling will see improvements and become more widely supported. NVIDIA will continue to work closely with game developers to enable efficient multi-GPU scaling and provide gamers with exceptional experiences.

Conclusion

In conclusion, the SLI update and the new high bandwidth bridge bring significant improvements to multi-GPU configurations. The higher bandwidth allows for smoother gaming experiences at higher resolutions and refresh rates. NVIDIA recommends a focus on two-GPU SLI configurations for optimal performance, with support for three and four GPUs available on a case-by-case basis. The future of multi-GPU scaling will depend on advancements in software and game development, and NVIDIA is committed to providing the best experiences for gamers.


Highlights

  • NVIDIA introduces the SLI HP bridge, offering double the bandwidth compared to previous bridges.
  • The high bandwidth bridge allows for higher configurations of displays, supporting resolutions up to 5K and beyond.
  • Multi-GPU support with Pascal has evolved to adapt to changing game development practices.
  • There are three modes of multi-GPU support in Windows: Multi Display Adapter (MDA) mode, Link Display Adapter (LDA) mode, and Explicit SLI mode.
  • Two-GPU SLI configurations are recommended for optimal performance, with three and four GPU configurations supported but not explicitly recommended.
  • The future of multi-GPU scaling depends on software and game development advancements.

FAQ

Q: Can I use more than two GPUs in SLI configurations with Pascal? A: While NVIDIA supports three and four GPU configurations, they are not explicitly recommended. The focus is on two-GPU SLI configurations for optimal performance.

Q: How does the new high bandwidth bridge improve gaming experiences? A: The high bandwidth bridge allows for smoother gaming experiences at higher resolutions and refresh rates by enabling direct GPU-to-GPU communication.

Q: Will multi-GPU scaling improve in the future? A: The future of multi-GPU scaling depends on advancements in software and game development. NVIDIA remains committed to optimizing multi-GPU scaling and providing exceptional experiences for gamers.

Q: Can I use different GPUs from various vendors in multi-GPU configurations? A: In Multi Display Adapter (MDA) mode, it is possible to use GPUs from different vendors. However, game developers need to implement specific algorithms to support this feature.

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