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Thermal Performance at 2.8GHz |
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At Idle and Under
Load |
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At idle,
defined as zero percent processor utilization, the Intel
reference heat sink performs nearly on par with asetek's
WaterChill system. Even though both configurations
sport identical ambient system temperatures, the
WaterChill is able to drop three degrees Fahrenheit in
relation to the air-cooled solution. Under load
(simultaneous instances of CPU Burn-in and Sandra's
Burn-In Wizard, looped for two hours), the asetek
maintains a much cooler 113F, while the stock cooler jumps
to 129.
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Thermal Performance at 3.0GHz |
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Overclocking Ups
the Ante |
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Increasing
the front side bus to 143MHz yields a 3GHz processor
speed. Both the water and air cooled systems
were given an extra .1V to combat instability, a
problem that would surface after 100% utilization for
hours on end. The resulting final fully stable
voltage 1.625V. This time around, the asetek
WaterChill demonstrates superior thermal capacity even
at idle, as the processor persists right at 105
degrees. On the other hand, Intel's cooler
allows the processor to creep up to 116 degrees..
Under
load, the discrepancy is even more pronounced, with
water-cooled Pentium 4 hitting 118 degrees versus 132
degrees air-cooled.
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Thermals 3.15GHz
and Conclusion
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