AMD Confidential

User Manual

November 21st, 2008

7.27 ATI RS480/RS780/RD790/RD890 Northbridge Devices

The ATI RS480/RD790/RS780 feature set includes an upstream HyperTransport CPU interface, a PCI-E interface, and an A-Link PCI-E dowstream interface to the SouthBridge. Depending on the part and the platform, each device may have some number of available PCI-E slots to connect with endpoint devices.

Interface

These Northbridge devices provide an upstream HyperTransport interface for communication with the Host. The Downstream link is a 2x or 4x PCI-E link used for communication with a SouthBridge device. Several PCI-E slot interfaces are also available. The number of slots varies by part and platform specifications.

Contents of a BSD

The current state of all PCI configuration registers and any internal state variables are saved in the BSD.

Configuration Options

No configuration options currently.

Log Messages

No logging is provided, other than the global options provided by each device. See Section 9.3, I/O Logging”, on page 144 for more information.

Difference from Real Hardware

The ATI RS480 and ATI RS780 device models do not simulate their integrated graphics processors. The RS780 model does not simulate the integrated HD Audio device.

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Chapter 7: Device Configuration

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AMD 4.4.5 user manual ATI RS480/RS780/RD790/RD890 Northbridge Devices

4.4.5 specifications

AMD 4.4.5 is a robust version of the AMD software ecosystem that focuses on enhanced performance, stability, and efficiency for users relying on AMD processors and graphics cards. This iteration brings various features and technologies designed to optimize gaming, professional applications, and general computing tasks.

One of the standout enhancements in AMD 4.4.5 is the integration of Smart Access Memory technology, which allows the CPU to access the full graphics memory directly. This feature enhances data flow between the CPU and GPU, leading to improved frame rates and overall performance, especially in memory-intensive games. Users can experience a marked increase in gaming performance without the need for additional hardware upgrades.

Another significant feature introduced is the updated Radeon Software Adrenalin Edition. This software update encompasses optimizations for various games, ensuring that gamers can enjoy a seamless experience with the latest titles. The Adrenalin interface also provides features such as Radeon Chill, which helps reduce power consumption during less demanding scenes, and Radeon Anti-Lag, designed to minimize input lag and enhance responsiveness in competitive gaming.

Additionally, AMD 4.4.5 brings the latest drivers that include important performance enhancements and bug fixes that allow for greater system stability. Regular updates ensure that users have the best experience with their AMD hardware, and it significantly bolsters compatibility with the latest gaming titles and software applications.

AMD's Enhanced Sync technology offers users the ability to eliminate screen tearing and stuttering while delivering smooth gameplay. It dynamically synchronizes the refresh rate of the display with the frame rates produced by the GPU, improving the visual experience significantly.

With the introduction of FidelityFX Super Resolution, AMD continues to bolster its suite of technologies that enhance graphics quality and performance. This feature allows lower-resolution images to be upscaled effectively, making it easier for users to enjoy high-end visuals without taxing their hardware excessively.

In summary, AMD 4.4.5 represents a comprehensive update for users by integrating cutting-edge technologies that cater to a wide range of applications from gaming to content creation. With enhancements across the board, AMD reaffirms its commitment to providing high-performance solutions that keep pace with the ever-evolving technology landscape. Whether for gaming aficionados or professional creators, the capabilities offered in this version make it a significant milestone in the AMD software ecosystem.