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Power Consumption

To complete our today’s test session we decided to measure the power consumption of the system built on Phenom II X4 940 processor (without the monitor) and compared the results against the power consumption of similar platforms built around competitor processors. These tests differ from the previously performed power consumption measurements because they take into account the power characteristics of the AMD and Intel chipsets and do not depend on the presence or absence of the memory controller integrated into the processor.

During this test session we loaded the CPUs using Prime95 utility. Besides, we activated all power-saving technologies, such as C1E, Cool’n’Quiet and Enhanced Intel SpeedStep, to make sure that the power readings in idle mode were correct. We also enabled turbo-mode for Core i7-920 processor.

The results demonstrated by the new Phenom II X4 940 processor look absolutely stunning against the background of the previous generation Phenom X4 9950. Due to new more advanced manufacturing process, AMD managed to significantly lower the power consumption of its platforms. However, there is still room for improvement. Contemporary systems with quad-core Intel LGA775 CPUs still boast better “performance-per-watt” ratio.

At the same time, surprising as it is, a system with Phenom II X4 940 processor turned overall more energy efficient than the one built with the latest generation Intel Core i7-920. However, this is no big victory, because Core i7 proved to be a higher –performance solution, according to our tests.

 
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