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A 4.1 GHz Dual Core at $130 - Can it be True?

Throttling back causes processor performance to fall off. At 4 GHz, power consumption also increases by a few watts, so that when compared to its original power consumption level of about 80 W, it must now deal with 195 W at maximum load.

Pentium D 805Zalman Cooler
Clock Rate100% UtilizationIdle Mode
4.10 GHzcrash52 °C
4.00 GHz80 °C49 °C
3.80 GHz76 °C47 °C
3.60 GHz74 °C46 °C
3.32 GHz71 °C46 °C
2.66 GHz64 °C44 °C

It was clear that air cooling solutions were no longer sufficient to let the system function at 4 GHz in all situations, so we switched to a water-cooled solution for this CPU. It worked!

Water cooling let the system transfer heat away from the CPU and keep working at top speed.

At a 200 MHz FSB clock rate, we can use the complete memory bandwidth for DDR2-667. Likewise, DDR2-800 now appears as a usable selection in the BIOS.

With memory speeds of up to DDR2-800, we can exploit 4 GHz CPU performance to its fullest potential.

We ran through our benchmarks with both DDR2-667 and DDR2-800 memory configurations.

At a setting of 1.5625 V for core voltage, the CPU we purchased at a retail outlet ran trouble-free.