Figure 15. Acoustic Noise From Sample Thermal Solutions With A 70X15 Mm Fan - AMD Athlon 64 Thermal Design Manual

Preliminary Information
26633 Rev. 3.03 September 2003
AMD Athlon™ 64 and AMD Opteron™ Processors
Thermal Design Guide
Figure 15 shows the impact of fan speed on the acoustic noise emitted from sample solution 2
thermal solutions. The fans used in those 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 noise. However, the thermal solutions did
not meet required thermal performance levels below 3000 rpm.

Figure 15. Acoustic Noise from Sample Thermal Solutions with a 70x15 mm Fan

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