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Pentium 4 with FSB 533 MHz in the test: Intel sets new standards

Pentium 4 with FSB 533 MHz in the test: Intel sets new standards

Table of contents
  1. 1 Foreword
  2. 2 Technology
  3. 3 Bandwidth
  4. 4 Power consumption
  5. 5 Requirements
  6. Overclocking
  7. 6 Test system
  8. Benchmarks
    1. 7 Boottime
    2. Sandra 2002
    3. 8 PCMark 2002
    4. 3DMark 2001SE
    5. 9 GLMark
    6. 10 Quake 3 Arena
    7. 11 Sysmark 2002
    8. 12 Seti @ Home
    9. WinACE
    10. 13 FlaskMPEG
    11. Lame
    12. 14 Cinema 4D
    13. 15 ViewPref
    14. 16 Lightwave
  9. 17 Pricing
  10. 18 Conclusion

Power consumption

Before we chase our test candidates through the benchmark course, we let them in Compete against each other. It should be clear from the outset that the new Northwood should have an advantage here thanks to its smaller manufacturing technology and lower core tension. But with every clock speed increase, the consumption of every processor increases noticeably. Accordingly, the coolers also have to become more and more efficient in order to dissipate the resulting heat output. The thermal design power specified by the processor manufacturers corresponds to the typical heat output that a cooler must at least be able to dissipate during normal operation. The following table contains the performance data specified by Intel and AMD for their processors.

Performance data in comparison
Processor core voltage consumption Athlon XPProcessors Athlon XP 2100+ (1.73 GHz) 1.75 volts 64.3 watts Athlon XP 2000+ (1.66 GHz) 1.75 volts 62.5 watts Athlon XP 1900+ (1.60 GHz) 1.75 volts 60.7 watts Athlon XP 1800+ (1.53 GHz ) 1.75 volts 59.2 watts Athlon XP 1700+ (1.46 GHz) 1.75 volts 57.4 watts Pentium 4 processors Pentium 4 2.53 GHz (Northwood) 1.5 volts 59.3 watts Pentium 4 2.40 GHz (Northwood) 1.5 volts 57.8 watts Pentium 4 2.20 GHz (Northwood) 1.5 Volt 55.1 Watt Pentium 4 2.0A (Nothwood) 1.5 Volt 52.4 Watt Pentium 4 2.0 (Willamette) 1.75 Volt 75.3 Watt

Die The table clearly shows that the consumption of the Pentium 4 with a Northwood core is well below that of an Athlon. You can also see the savings in consumption by switching to 0.13 µm production technology. At the same speed, the Pentium 4 with 2 GHz and Northwood core needs 23 watts less than its predecessor with a Willamette core and 0.18 µm technology. The new Pentium 4 with its 2.53 GHz still needs significantly less than the models of the competition and is roughly on par with the Athlon XP 1800+.

The radiated heat is of course directly related to the power consumption. Under full load, the temperature of the Pentium 4 with 2.53 GHz with the case open was around 40 ° C, which is a good 2 ° C warmer than the 2.4 GHz Pentium with a front-side bus of 133 MHz. The temperature of the Athlon XP 2100+ was read with a really powerful and loud fan of 47 ° C, which means that the AMD processor is still significantly warmer than its Intel counterpart.

As we can see from the table, Intel has also left the core voltage unchanged in the new processors. However, the voltage only comes into play when the processor is not under loadis, or better expressed, when a current of 0 amperes flows through it. As the load on the processor increases, so does the processor voltage. All Pentium 4 models have this behavior, but we have not yet discussed this feature in more detail. The 1.5 volts only form the basic voltage for the current strength mentioned. As soon as a current of 10 amps flows through the processor, the processor voltage should be reduced by at least 19 mV and a maximum of 75 mV. The current and the voltage are linearly dependent on each other. According to Intel, the Pentium 4 with 2.4 GHz has a maximum of 49.8 amps at full load. Under this load condition, the voltage must be no less than 1.330 volts and no more than 1.405 volts. In this case, the voltage applied to the processor is noticeably below the core voltage of 1.5 volts, which is usually stated. Since the Pentium 4 can even draw up to 51.5 amps at 2.53 GHz, the processor voltage must be automatically reduced by the mainboard to a value between 1.325 and 1.400 volts in this case. In this way the heat radiation of the Pentium 4 is throttled.

On the next page: Requirements

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