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Preliminary Information

26633 Rev.

3.03 September

2003

AMD Athlon™ 64 and AMD Opteron™ Processors

Thermal Design Guide

2.6.6 Thermal Interface Material

AMD evaluates thermal interface materials for use with its processors. A list of suggested
materials is provided in Table 6.

Table 6. Suggested Thermal Interface Materials

Manfufacturer

Interface Material

Material Type

Application

Bergquist TIC-3000 Grease

Processor

to

heatsink

Shin Etsu

G751

Grease

Processor to heatsink

Shin Etsu

X23-7762

Grease

Processor to heatsink

Shin Etsu

X23-7783D

Grease

Processor to heatsink

Thermoset, Lord CPD

TC-350

Grease

Processor to heatsink

The heatsink makes contact with the top surface of the processor package utilizing the thermal
interface material between the processor lid and the heatsink. AMD recommends using a high-

performance grease such as those listed

in Table 6. AMD does not recommend using phase-

change materials between the heatsink and the processor.
Phase-change materials develop high adhesion forces between the heatsink and processor when
the material is in the solid phase. This strong adhesive force may cause the processor to stick to
the heatsink. 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 pins.
The heatsink manufacturer may apply the grease to the heatsink. If this procedure is done, a
protective cover should be used to prevent contamination of the interface material. Additionally,
most grease should be applied in a 34–35 mm square that is 0.06–0.08 mm thick. This amount of
grease has provided good coverage of the processor lid while not being excessive. Grease may
flow over the edges of the processor and reach the socket if excessive amounts are applied. This is
not desirable.

2.6.7 EMC Shield

Because of the high clock frequencies of the AMD Opteron and AMD Athlon 64 processors, an
EMC shield has been designed and incorporated into the thermal solution. This shielding is a
component that may or may not be necessary for meeting regulatory agency requirements,
depending on the system. However, the shielding has been designed as a component that can be
added to the heatsink assembly either during assembly of the heatsink components or during final
assembly of the system. The heatsink retention frame has features for aligning and retaining the
EMC shield.

Chapter 2

AMD Athlon™ 64 and AMD Opteron™ Processors Thermal Requirements

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Содержание AMD Athlon 64

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

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

Страница 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...

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

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Страница 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...

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

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

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

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

Страница 73: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 73...

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

Страница 75: ...Preliminary Information 26633 Rev 3 03 September 2003 AMD Athlon 64 and AMD Opteron Processors Thermal Design Guide Appendix A Appendix 75...

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

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

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

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

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

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Страница 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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