Need Help....

**Rio** · December 5th, 2006, 07:16 PM

Ami jantam but vule gechi keu ki ache je jane kivabe Processor er aiuu mane ar koto din thik thakbe ba helath check kora jai msconfig die hote pare ami suree na keu ki aitar process ta jane janle plz post korenn.thanks

**JUBAiR** · December 6th, 2006, 04:59 AM

i never knew processors have life expectancy period...

... never heard of it.. and never knew it can be calculated.. so i cant help you... and if it really exists may be someone can

goru · 09:22 AM

	Quote:			Originally Posted by Rex
	There's a processor longevity app at [url REMOVED BY MOD]Lemon Party - Join the fun[/url]

what is this! how can he post this being a moderator of the forum.

Indeed cpu life expectancy can be calculated measuring the temperature

if u want to know read this

CPU Temperature vs Life Expectancy

More than a few emails to Overclockers.com seek answers to two questions - What does oveclocking do to my CPU's life expectancy, and What is the optimum operating temperature for my CPU. The following equations should shed some light on these questions from a theoretical viewpoint.
Increase in Heat Due to Overclocking
CPUs dissipate heat at known rates. Intel lists these rates for each of its processors in their Developer Notes. For example, the Celeron 366 dissipates 21.7 watts. Any cooling solution must be able to effectively shed this heat load. Note that this heat is at spec speeds and voltages - when overclocking, more heat is generated than this.
The CPU Overclocking Heat Equation
Heat above spec can come from two areas: 1, Heat due to increased frequencies and 2, Heat due to increased voltage. Increasing bus speeds (frequencies) increases heat linearly and increasing voltage increases heat by the square of the voltage increase. This is represented by the following equation:
Pnew = Pspec * (Fnew/Fspec)*(Vnew/Vspec)^2
P = Power in watts
F = Frequency in MHz
V = Voltage
new = P, F and V at the new settings
spec = Intel's published specifications for the CPU in question

For the Celeron 366, let's assume we are hitting 550 MHz at 2.3 volts. Plugging these numbers into the equation:
Pnew = 21.7 * (550/360) * (2.3/2.0)^2
Pnew = 21.7 * 1.50 * 1.32 = 43.0 watts

Therefor overclocking this C366 raise the heat dissipated from the spec of 21.7 watts to an overclocked rate of 43 watts, a 98% increase. What then is the impact on CPU Life? This depends on the amount of heat generated and the cooling efficiency of your CPU cooler.
CPU Cooler Impact on CPU Heat
Let's assume the CPU cooler you are using has a thermal efficiency of .35 c/w. This means that for every watt of heat dissipated by the CPU, its temp will rise by .35 degrees Centigrade - the lower the c/w, the better. The more efficient the cooler, the more heat is dissipated by the heatsink, hence the lower the CPU temp. The increase in CPU temp can be estimated as follows:
Estimated CPU Temp = CPU spec temp + (CPU watts * CPU cooler efficiency)
Estimated CPU Temp at spec = 25 + (21.7 * .35) = (25 + 7.6) = 32.6 C
Estimated Overclocked CPU Temp = 25 + (43 * .35) = 40 C

The Estimated Overclocked CPU Temperature is 40 C compared to the estimated spec rating of 32.6 C. So now we know the difference between running the C 366 at Intel's specifications and the overclocked settings: 7.3 C. More heat will result in decreased CPU life.
Estimating the Impact of Heat on CPU Life Expectancy
Thanks to the High Performance PC Guide and Global Win, I found a formula which explains the relationship between Heat and Life Expectancy.
The Formula
CPU Life and Temperature are inversely related - the higher the temperature, the lower the CPU's Life. This holds true for all integrated circuits - heat is the enemy! What this formula shows is just how this relationship works and its potential impact.
CPU Life = Normal Life Hours / [((273 + New Temp) / (273 + Normal Temp)) ^ M]
Now "Normal Life Hours" means that the CPU has some expected life at Normal Temp, say 30,000 hours. If the CPU is run at a higher temperature, CPU Life is degraded by the ratio of the New Temp to Normal Temp raised to the power of M. The number 273 is a constant in the formula. M is determined by real life temperature tests - The CPU is run at a constant 60 C, then 70 C, and the resultant decrease in CPU Life determines M. Let's plug in some numbers and see what we get.
For this case, I have used 30,000 hours as "Normal Life" and calculated the impact of temperatures from 25 to 75 C, for 3 cases of M - let's call the three cases the "Hardy" CPU, the "Average" CPU and the "Weak" CPU. The Hardy CPU is not too affected by temperature, while the Weak CPU wilts very quickly in the heat. The important point here is to demonstrate how heat can impact CPU Life over a range of conditions.

The Graph shows the relationship for the three cases outlined above, with "Hardy" on the top line and "weak" the bottom line. As you can see, depending on the CPU's "hardiness", CPU Life can be impacted a lot or not too badly. However, it is interesting to note that in all cases there is more absolute degradation closer to Normal Temp. For the three cases shown, the "Hardy" CPU, if run at 75C, will live for 13,814 hours, the "Average" CPU 6,361 hours and the "Weak" CPU for a puny 1,349 hours.

**Rio** · December 6th, 2006, 12:40 PM

Thanks goru dostoo.Jubair via ami akbar process ta prothom alo te porechilam but likhe nite vule gechilam.thanks all.Rex vi link ta koii.ami jeta chaichilam seta pelam na makae paper ta valo vabe khujte hobe jodi pai to ami aikhane post kore dibo.

Rex · December 6th, 2006, 07:15 PM

I admit it was a joke in poor taste. My apologies to those I have offended

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