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Preliminary Information 

AMD Athlon™ 64 and AMD Opteron™ Processors 
Thermal Design Guide 

  26633 Rev. 

3.03 September 

2003 

 

2.3 Motherboard Component Height Restrictions 

The mounting solution for the heatsink requires attachment to the motherboard. As such, this 
solution calls for a standard motherboard keepout region and mounting holes for the processor. An 
overview of the motherboard component restrictions for the AMD Athlon 64 is shown in Figure 3. 
A complete detailed set of drawings is shown in Appendix A.3 on page 47. Thermal-solution 
designers must adhere to these geometric restrictions to be compatible with the motherboards 
designed for the AMD Athlon 64 processor. Similarly, overview of the motherboard component 
restrictions for the AMD Opteron is shown in Figure 4 on page 17. 

 

Figure 3. Motherboard Component Height Restrictions for the AMD Athlon™ 64 Processor 

Thermal Solution  

16

 

AMD Athlon™ 64 and AMD Opteron™ Processors Thermal Requirements  Chapter 2 

 

Summary of Contents for AMD Athlon 64

Page 1: ...AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Publication 26633 Rev 3 03 Issue Date September 2003...

Page 2: ...products including but not limited to the implied warranty of merchantability fitness for a particular purpose or infringement of any intellectual property right AMD s products are not designed intend...

Page 3: ...sign Requirements 18 2 5 Sample Heatsinks and Attachment Methods 19 2 5 1 Thermal Reference Design Solution 1 19 2 5 2 Thermal Reference Design Solution 2 22 2 6 Thermal Solution Design Considerations...

Page 4: ...Processors Thermal Design Guide 26633 Rev 3 03 September 2003 A 2 2 Procedure 45 A 3 Motherboard Component Keep Out Areas and Height Restriction Drawings 47 A 4 Thermal Reference Design Solution Comp...

Page 5: ...a Heatsink Installation Utilizing the Thermal Reference Design Solution 2 24 Figure 11 Example of a Low Cost Heatsink Using Aluminum Extrusion Technology 27 Figure 12 High Performance Heatsink with Co...

Page 6: ...AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 6 List of Figures...

Page 7: ...mal Solution Design Requirements for the AMD Athlon 64 and AMD Opteron Processors 18 Table 3 Components for the AMD Athlon 64 and AMD Opteron Processors Thermal Reference Design Solution 1 19 Table 4...

Page 8: ...AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 8 List of Tables...

Page 9: ...2 6 on page 25 added Section 2 6 4 3 Required Exhaust Airflow Direction on page 29 added Figure 13 on page 29 revised Section 2 6 5 on page 30 added Figure 14 on page 31 added Figure 15 on page 32 and...

Page 10: ...AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 10...

Page 11: ...d AMD Opteron processors 1 1 Summary of Requirements To allow optimal reliability of the AMD Opteron and AMD Athlon 64 processor based systems the thermal and cooling solution should dissipate heat fr...

Page 12: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 12 Introduction Chapter 1...

Page 13: ...on 64 FX and AMD Opteron processors The thermal and mechanical specifications for the 940 pin AMD Athlon 64 FX processor are the same as those for the AMD Opteron processor For the thermal and mechani...

Page 14: ...pins are removed from the A1 corner of the package and a single pin is removed from the other three corners The electrical and mechanical connection to the motherboard is made with a small solder bal...

Page 15: ...of the Socket 940 which is used for the AMD Opteron processor As with the Socket 754 it has a 1 27 mm array pitch but has a 31x31 pin array with various pins removed from the package for keying and m...

Page 16: ...component restrictions for the AMD Athlon 64 is shown in Figure 3 A complete detailed set of drawings is shown in Appendix A 3 on page 47 Thermal solution designers must adhere to these geometric res...

Page 17: ...mber 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Figure 4 Motherboard Component Height Restrictions for the AMD Opteron Processor Thermal Solution Chapter 2 AMD Athlon 64 and AM...

Page 18: ...esign Requirements for the AMD Athlon 64 and AMD Opteron Processors Symbol Description Minimum Maximum Notes L Length of heatsink 77 mm 77 mm Measurements are for the entire assembly including attache...

Page 19: ...ard due to clip forces on the heatsink Figure 6 on page 21 shows the assembly components grouped for shipment and how they are used during the final assembly of the system When developing the thermal...

Page 20: ...and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 Figure 5 AMD Athlon 64 and AMD Opteron Processors Thermal Reference Design Solution 1 20 AMD Athlon 64 and AMD Opteron Pro...

Page 21: ...eron Processors Thermal Design Guide Figure 6 Thermal Reference Design Solution 1 Components Assembled for Shipment Figure 7 View of an Installed Heatsink Utilizing the Thermal Reference Design Soluti...

Page 22: ...terial protection hook the clip onto the retention frame and then actuate the cam For the thermal reference design solution 2 the installer needs no tools for the heatsink installation process Figure...

Page 23: ...on 64 and AMD Opteron Processors Thermal Design Guide Figure 8 Exploded View of the Components Utilized in the AMD Athlon 64 and AMD Opteron Processors Thermal Reference Design Solution 2 Chapter 2 AM...

Page 24: ...uide 26633 Rev 3 03 September 2003 Figure 9 Thermal Reference Design Solution 2 Components Configured for Shipment Figure 10 View of a Heatsink Installation Utilizing the Thermal Reference Design Solu...

Page 25: ...of processor The AMD Athlon 64 processor version has a 20 mm square hole while the AMD Opteron processor version has a 26 mm square hole Using a 26 mm hole on both AMD Athlon 64 and AMD Opteron proce...

Page 26: ...es a stop for the heatsink in case of a large shock force event The retention frame serves to hold the solution 1 heatsink assembly together as a single unit for shipping and assembly and aligns and h...

Page 27: ...e thermal performance requirements of a particular processor a low cost heatsink may be appropriate for an application An example of a low cost heatsink utilizing extruded aluminum stock is shown in F...

Page 28: ...incorporate copper into the heatsinks Copper and aluminum are commonly used together in the same heatsink Figure 12 shows an example of a heatsink that would perform better than the low cost extrusion...

Page 29: ...exhausting from the heatsink be directed across the motherboard processor voltage regulator Motherboard suppliers have designed their motherboards to have voltage regulators located along the long si...

Page 30: ...gh fan speed to meet these requirements Acoustic noise is a concern for both system builders and AMD Systems with high levels of acoustic noise can generate customer complaints and can influence the a...

Page 31: ...re 14 shows a typical fan speed curve The actual fan speed can depend on the heatsink but the speed versus temperature ramping should be implemented as shown in the figure Figure 14 Typical Temperatur...

Page 32: ...ose measurements were 70x15 mm and nominally varied speed from 3000 RPM to 6000 RPM over the temperature range of 32 C to 42 C Lower speeds were investigated for additional reductions in acoustic nois...

Page 33: ...tsink During heatsink removal this strong adhesive force may cause the processor to be removed from the socket while it is locked and this action may result in damage to the socket or to the processor...

Page 34: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 34 AMD Athlon 64 and AMD Opteron Processors Thermal Requirements Chapter 2...

Page 35: ...thermal reference design solutions 1 and 2 have been presented in this document These thermal solutions should provide the thermal engineer the design information to either implement the thermal refe...

Page 36: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 36 Conclusion Chapter 3...

Page 37: ...hermal conductivity epoxy such as Omega Engineering s Omegabond 101 The heatsink base temperature requires drilling a hole in the heatsink base and inserting a thermocouple inside the hole The ambient...

Page 38: ...Clean the contact area to achieve good adhesion and apply a small amount of high thermal conductivity epoxy such as Omegabond 101 to glue down the thermocouple bead and about 2 mm of lead wire This st...

Page 39: ...er 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Figure 18 Thermocouple Attached to Processor with Strain Relief on Package and PCB Figure 19 Heatsink with Thermocouple Relief Gro...

Page 40: ...sert thermocouple into hole until the bead touches the bottom of the hole 4 Tape the thermocouple wire in place to prevent removal and add strain relief A 1 3 Ambient Thermocouple Attachment The ambie...

Page 41: ...the load cell fixture See Figure 21 for an example of this load cell For more information about the load cell see http www entran com elw htm Figure 21 An Entran ELW D1 Load Cell A 2 1 2 Load Cell Fix...

Page 42: ...cell fixture should be machined from a stainless steel material A drawing of the fixture is shown in Figure 23 on page 43 The drawing is proportioned for the nominal dimensions of the processor and t...

Page 43: ...minary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Figure 23 Drawing of Load Cell Fixture for the Entran ELW D1 Load Cell Appendix A Appendi...

Page 44: ...reas must be followed to avoid tainted load measurements A 2 1 4 Voltage Source A precision voltage source should be used to power the load cell The Entran ELW series load cells require 15 V excitatio...

Page 45: ...ct the load cell as indicated by the manufacturer 2 With nothing touching the load cell and fixture assembly record the zero load output voltage in millivolts since the load measurement is based on ch...

Page 46: ...l clip and tighten screws until the clip is fully installed as shown in Figure 25 Figure 25 Heatsink Installation over the Load Cell Fixture 9 Allow the output voltage to settle 1min and take the volt...

Page 47: ...ction from page 48 through page 57 provide information for the motherboard component keep out areas and height restrictions for the AMD Athlon 64 processor based on the 754 pin socket The ten drawing...

Page 48: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 48 Appendix Appendix A...

Page 49: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 49...

Page 50: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 50 Appendix Appendix A...

Page 51: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 51...

Page 52: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 52 Appendix Appendix A...

Page 53: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 53...

Page 54: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 54 Appendix Appendix A...

Page 55: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 55...

Page 56: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 56 Appendix Appendix A...

Page 57: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 57...

Page 58: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 58 Appendix Appendix A...

Page 59: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 59...

Page 60: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 60 Appendix Appendix A...

Page 61: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 61...

Page 62: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 62 Appendix Appendix A...

Page 63: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 63...

Page 64: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 64 Appendix Appendix A...

Page 65: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 65...

Page 66: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 66 Appendix Appendix A...

Page 67: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 67...

Page 68: ...on Processors Thermal Design Guide 26633 Rev 3 03 September 2003 A 4 Thermal Reference Design Solution Component Drawings Pages 69 through 82 contain drawings for the components of the thermal referen...

Page 69: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 69...

Page 70: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 70 Appendix Appendix A...

Page 71: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 71...

Page 72: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 72 Appendix Appendix A...

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Page 74: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 74 Appendix Appendix A...

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Page 76: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 76 Appendix Appendix A...

Page 77: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 77...

Page 78: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 78 Appendix Appendix A...

Page 79: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 79...

Page 80: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 80 Appendix Appendix A...

Page 81: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 81...

Page 82: ...Preliminary Information AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide 26633 Rev 3 03 September 2003 82 Appendix Appendix A...

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