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hi
Apart from the maximum CPU operating temperature, the maximum power usage under typical worst-case conditions is also essential for selecting a suitable cooling system. i try to find out but not get enough what i want please can any one help in this to find out calculation .??
hi
i can help you if you provide me some information about your hardware ,so i will get idea of calculation .
The theory behind calculating the power usage for an overclocked CPU is very simple: Power usage is proportional to clock speed, and proportional to the square of the core voltage.
Before we express this as a formula, let's intruduce the following variables:
* Ps is the power usage of the non-overclocked CPU
* Po is the power usage of the overclocked CPU
* Fs is the clock speed of the non-overclocked CPU
* Fo is the clock speed of the overclocked CPU
* Us is the default voltage of the non-overclocked CPU
* Uo is the voltage at which the overclocked CPU runs
Here is the formula:
Po = Ps * (Fo/Fs) * (Uo2/Us2)
A simple example:
We want to calculate the maximum power usage of a Athlon "Thunderbird" 1.33 GHz CPU overclocked to 1.6GHz using 1,9V voltage. From this page, we find out that:
* Ps is 70W (max)
* Us is 1.75V
Also, we know that
* Fs is 1.33GHz
* Fo is 1.6GHz
* and Uo is 1.9V
Therefore:
Po = 70 W * (1.6/1.33) * (1.92/1.752) = 99.26 W
Values calculated using this method are not very accurate, since I/O voltage and FSB speed is not taken into account. However, they should be precise enough to help you decide what kind of power supply and cooling you need.