Preliminary Information

AMD Athlon™ XP Processor Model 8 Data Sheet

25175H— March 2003

8.13Thermal Diode Characteristics

Thermal Diode

Electrical

Characteristics

The AMD Athlon XP processor model 8 provides a diode that can be used in conjunction with an external temperature sensor to determine the die temperature of the processor. The diode anode (THERMDA) and cathode (THERMDC) are available as pins on the processor, as described in “THERMDA and THERMDC Pins” on page 78.

For information about thermal design for the AMD Athlon XP processor model 8, including layout and airflow considerations, see the AMD Processor Thermal, Mechanical, and Chassis Cooling Design Guide, order# 23794, and the cooling guidelines on http://www.amd.com.

Table 17 shows the AMD Athlon XP processor model 8 characteristics of the on-die thermal diode. For information about calculations for the ideal diode equation and temperature offset correction, see Appendix A, "Thermal Diode Calculations," on page 77.

Table 17. Thermal Diode Electrical Characteristics

Symbol

Parameter

Min

Nom

Max

Units

Notes

Description

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I

Sourcing current

5

 

300

µA

1

 

 

 

 

 

 

 

 

n

f, lumped

Lumped ideality

1.00000

1.00374

1.00900

 

2, 3, 4

factor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nf, actual

Actual ideality factor

 

1.00261

 

 

3, 4

 

RT

Series Resistance

 

0.93

 

3, 4

Notes:

1. The sourcing current should always be used in forward bias only.

2. Characterized at 95°C with a forward bias current pair of 10 A and 100 A. AMD recommends using a minimum of two sourcing currents to accurately measure the temperature of the thermal diode.

3. Not 100% tested. Specified by design and limited characterization.

4. The lumped ideality factor adds the effect of the series resistance term to the actual ideality factor. The series resistance term indicates the resistance from the pins of the processor to the on-die thermal diode. The value of the lumped ideality factor depends on the sourcing current pair used.

42

Electrical Data

Chapter 8

Page 54
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AMD 8 manual Thermal Diode Characteristics, Thermal Diode Electrical Characteristics

8 specifications

AMD's Ryzen 8000 series, commonly referred to as AMD 8, represents a significant leap in performance and efficiency, leveraging advanced technologies that cater to gamers, content creators, and enterprise users alike. With a continued focus on the Zen architecture, the Ryzen 8000 processors enhance performance per watt, delivering increased efficiency without compromising on power.

One of the standout features of AMD 8 is its adoption of the 5nm process technology. This innovation allows for a higher density of transistors, resulting in improved performance metrics and reduced power consumption. The smaller node size not only enhances clock speeds but also ensures that the chips generate less heat, making thermal management easier for system builders.

AMD has introduced a new architecture with the Ryzen 8000 series known as Zen 5. This architecture brings improved instructions per cycle (IPC) over its predecessors, leading to faster performance in both single-threaded and multi-threaded workloads. Gamers will benefit from higher frame rates, while professionals in fields such as video editing and 3D rendering can expect noticeable improvements in rendering times.

Another key technology in the AMD 8 lineup is the integration of AMD's next-generation RDNA graphics architecture. This allows for enhanced graphics performance in systems without dedicated GPU hardware. The combination of advanced graphics and CPU capabilities provides a more versatile platform for casual gamers and users with less demanding graphical needs.

Support for PCIe 5.0 is a game changer for the AMD 8000 series, offering double the bandwidth of its predecessor, PCIe 4.0. This feature allows for faster data transfer rates with compatible SSDs and graphics cards, ensuring that users can take full advantage of the latest storage technologies.

Additionally, AMD's Infinity Cache has made its way into the Ryzen 8000 series, further enhancing memory bandwidth. This technology reduces latency and increases efficiency by caching frequently accessed data closer to the processor.

In terms of connectivity, the Ryzen 8000 models come equipped with Wi-Fi 7 and Bluetooth 5.2, providing ultra-fast wireless connections that are essential for modern gaming and streaming experiences.

In summary, AMD's Ryzen 8000 series, or AMD 8, is designed for maximum performance and efficiency. With its advanced 5nm technology, enhanced Zen 5 architecture, integrated RDNA graphics, PCIe 5.0 support, Infinity Cache, and state-of-the-art connectivity features, it sets a new standard for processors in its class, making it a top choice for both gamers and professionals.