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Intel Pentium 4-HT 3.06 GHz

Retail box with fan heat sink

Installation | CPU Heat Sink and Fan | First-time Power On

Intel(R) Pentium(R) 4 Processor - Maximum Performance for the Ultimate Gaming and Multimedia Experience

Intel(R) Pentium(R) 4 Processor - Maximum Performance for the Ultimate Gaming and Multimedia Experience



Surpassing the 3 GHz mark, the Intel® Pentium® 4 processor at 3.06 GHz offers higher levels of performance, creativity and productivity.

Based on Intel® NetBurst™ microarchitecture, the Pentium 4 processor offers higher-performance processing than ever before. Built with Intel's 0.13-micron technology, the Pentium 4 processor delivers significant performance gains for use in home computing, business solutions and all your processing needs.

The newest Pentium 4 processor supports Hyper-Threading Technology, which enables you to multitask more efficiently than ever before when you run the most demanding applications at the same time.

Intel® Pentium ® 4 Processor Features

Available Speeds

533MHz system bus: 3.06 GHz, 2.80 GHz, 2.66 GHz, 2.53 GHz, 2.40B GHz, 2.26 GHz

400MHz system bus: 2.60 GHz, 2.50 GHz, 2.40 GHz, 2.20 GHz, 2A GHz, 2 GHz, 1.90 GHz, 1.80 GHz, 1.70 GHz

Hyper-Threading Technology

Available in systems with the Intel Pentium® 4 Processor with HT Technology

Intel® NetBurst™ Microarchitecture

533 or 400 MHz system bus

Hyper-pipelined technology

Rapid execution engine

Execution trace cache

Advanced transfer cache

Advanced dynamic execution

Enhanced floating point/multimedia

Streaming SIMD extensions 2


Hyper-Threading Technology requires a computer system with an Intel® Pentium® 4 processor at 3.06 GHz or higher, a chipset and BIOS that utilize this technology, and an operating system that includes optimizations for this technology. Performance will vary depending on the specific hardware and software you use. See for information.


Installed CPU into socket on main board. Unlocked socket lever. Align CPU – the chip corner with the mark points to lever hinge. Lock socket lever.

Installed heat sink with fan. Open both clip levers, align heat sink and clip assembly with the black retention frame on the main board. Push down on all four corners to secure the assembly to the retention frame hooks. Close the clip levers. Connected the processor fan to the header on the main board.

Later the stock HSF was replaced – see section CPU Heat Sink And Fan.

CPU Heat Sink and Fan

The stock HSF is quite noisy when the CPU is under load. The stock HSF was replaced on 9/26/2003 with the heat sink Thermalright SP‑94 and a 92 mm Papst Variofan 3412 NGMV (92x92x25mm, 14-28 db(A), 1.4-1.8 W, 25.3-42.4 cfm) As thermal interface material Artic Silver Céramique was used.

Later, various other fans were tested – see CPU Fan Upgrade section.


The plastic retention bracket for the stock Pentium P4 heat sink was removed from the main board. First the four plastic pins were removed and then the bracket posts can be pressed together and pushed through the holes in the main board.
Installed the four stand-off screws for the SP-94.

Close-up of a stand-off screw. A larger plastic washer was used between the top of the screw and the main board. A smaller plastic washer was used between the bottom of the screw and the black X-bracket.

After applying a thin layer of the thermal interface material to the heat spreader of the CPU chip, the heat sink was installed on the stand-off screws with four spring-mounted screws.

When the main board is installed in the case, the elbows of the three heat pipes are oriented towards the floor – see picture.

The heat sink clears all neighboring components on the main board. Two of the spring-loaded screws are visible. Also pictured are the fan retention wires.

View of the top of the installed heat sink without fan.

Close-up view of the installed Papst 92 mm fan. The fan is held in place by two retention clips. The fan blows down towards the heat sink.

Papst 92 mm fan installed on top of the heat sink.

The CPU fan leads are connected to the CPU fan header on the main board using a 4-pin to 3-pin adapter.

The fan’s thermal resistor lead was not connected, so that the fan can reach its maximum speed.

Heat sink and fan are installed and the main board drawer is back in the case. The wiring inside the case was improved also.

CPU Fan Upgrade

SilenX IXtrema Blue LED 120mm as CPU Fan

(6/4/2005) While the 92 mm Papst fan is quiet, it lacks speed sensing. As an experiment the IXtrema 120 mm fan was tested.


  • Fan Swept Forward Fan Blade Design
  • Smoother, Thinner Fan Blades
  • Highly Efficient Hybrid Bearings
  • Silicone Vibration Dampening Mounts
  • Weighted Steel Screws
  • Sleeved Power Cable
  • 3rd Wire RPM Sensor
  • 100+K Hours @ 25C MTBF
  • 3->4 pin Power Converter Cable
  • Built-in LEDs


  • Fan Dimensions: 120 x 120 x 25mm
  • Fan Input: 12V/2.0W
  • Fan Speed: 1600 RPM +/- 15%
  • Air Flow: 58 CFM
  • Noise Level: 14 dB(A)
  • Three Pin Connector
  • Four Pin Connector
  • LED Color: Blue

The following changes were installed while the CPU is overclocked. This fan has a speed sensor wire and its 3-pin connector fits directly onto the CPU fan header of the main board. The new fan runs very quiet and the four LEDs look nice, but the CPU runs hotter by about 10°C under load.

The 120 mm fan was installed onto the Thermalright heat sink. The fan retention clips are not really designed for a 120 mm fan, but by clipping only one end of each clip, the fan can still be held in place securely.

Closer look at the new installed HSF combination.

Here is the fan in action on top of the heat sink.

Click to see larger picture

Temperature Benchmarks with 120 mm CPU Fan

The temperatures were measured with the SpeedFan utility and noted after the system reached steady state.


CPU Temperature [°C]

CPU Fan Speed [rpm]

Idle (room 26.4°C)



Prime95[1] (room 26.1°C)



3DMark2001SE[2] (room 25.8°C, GPU 53.4°C[3])



Compare these temperatures to the ones with a faster spinning 92 mm fan.

Delta 92 mm CPU Fan and SilenX IXtrema Blue LED 120 mm as Rear Case Fan

(6/5/2005) The IXtrema 120 mm fan does not run fast enough to cool the CPU heat sink sufficiently. Instead it was put in place of the two 80 mm Papst fans at the rear of the case. A 3-pin male to 4-pin male adapter cable was needed to connect the fan to the Y-adapter cable for the CHA_FAN header of the main board.  The 120 mm fan looks nice, runs very quiet, and provides a speed signal to the BIOS. A spare Delta Electronics 92 mm fan with speed sensor (Model ASB0912H, 12V, 0.3A) was used as CPU fan. It runs over twice as fast, somewhat noisy at full speed, but cools the CPU nicely.

The 120 mm fan fits perfectly into the case at the rear. Only one cable tie at the top right corner is needed to secure the fan.

The remaining openings at the rear of the case were covered with pieces of clear plastic. This forces outside air through the air filter at the front.

The temperatures were measured with the SpeedFan utility and noted after the system reached steady state.


CPU Temperature [°C]

CPU Fan Speed [rpm]

Idle (room 25.8°C)



Prime95[4] (51% CPU utilization, room 26.6°C)



3DMark2001SE[5] (room 26.3°C, GPU 54 °C[6])



Prime95 and 3DMark2001SE (100% CPU utilization, room 26.4°C, GPU 54°C)



Thermaltake Silent Cat 9CM CPU Fan

(6/19/2005) The Delta fan was replaced by a Thermaltake Silent Cat 9CM. This white 90 mm fan has multidirectional air intakes for improved air flow while keeping the noise level low. It has a 3-pin connector with speed signal.

The picture shows this fan mounted on the CPU heat sink using the fan mounting wires.




Fan Speed

2500±10% RPM

Fan Color


Max. Air Flow


Fan Dimension


Max. Air Pressure


Rated Voltage



21 dB(A)

Started Voltage


Bearing Type

1 Ball 1 Sleeve

Rated Current


Life Expectation

60,000 hrs

Power Input



3 Pin


103 g(0.23lb)

The resulting power consumption of the fans connected to the main board fan headers is still safely below the maximum value.

The temperatures were measured with the SpeedFan utility and noted after the system reached steady state. This fan is very quiet even when running at full speed.


CPU Temperature [°C]

CPU Fan Speed [rpm]

Idle (room 26.3°C)



Prime95[7] (51% CPU utilization, room 26.3°C)



First-time Power On – No System Memory

Connections between PSU and Main Board

Connected the 20-pin power plug and the 4-pin ATX 12V power plug from the power supply to the main board.


Initially, connected the rear and top case fans to the power supply fan-only plugs. Connected a device power plug to the front case fans.

Later, once the DigitalDoc5 device was installed, used adapter cables to connect the front case fans to the main board “CHA_FAN” header and the rear and top fans to the DigitalDoc5.

Connected the power supply fan speed monitoring lead to the main board header.


Front Panel Connections

Front panel connectors (labels on connectors face away from case bottom unless otherwise noted):

  • System power LED lead (label on connector faces bottom of case)
  • Power switch lead
  • Reset switch lead


  • Speaker lead
  • IDE LED lead (label on connector faces front of case)

Connected the two black leads for the left USB ports in the front of the case to the blue USB header on the main board with the labels on the connectors facing away from the case bottom.

The vocal messages are not played through the internal PC speaker. In order to hear POST Reporter vocal messages, connected rear line-out to line-in of another computer/speaker amplifier.

POST stops with a “no system memory installed” message.


[1] Torture Test – In-place large FFTs

[2] Benchmark loop

[3] DigitalDoc5 sensor glued to GPU heat sink

[4] Torture Test – In-place large FFTs

[5] Benchmark loop

[6] DigitalDoc5 sensor glued to GPU heat sink

[7] Torture Test – In-place large FFTs

Last modified: 06/11/2006













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