Don't feel like doing math?

[bh2k]

Did a little simple PHP that will calculate some common things for you instantly.

http://www.brainwashstudios.com/php/calc.php

Now, I need some help on the next one. I wanted to make it so people could enter in a resistance and get the respected voltage for a part. I can do the coding if someone can help me with the math. Anyone wanna help?

Ps The multi and fsb things are for 800fsb socket 478 P4s.

[pik-ard v1.1]

celcius -> fahrenheit doesnt work.

for voltage, you need resistance, and (current or wattage).
voltage = resistance * current
voltage = squareroot(watt * resistance) <= i think...

[***Deimos***]

I doubt most people here would bother taking the time to go to the page when most of these numbers can be calculated (at least roughly with the fsb x multi), in a split-second.

People enter resistence and get Voltage... hmmm???
V = R x I (grade 6 stuff). So you need to know current in a 'part' before hand. However, if you're dealing with processors, typically current varies (up to a max) with the load. Typically only the voltage is constant (semi-constant at least, because it does bob up and down as the voltage regulators adjust for the load).

Dynamic power = C x f x V^2 - Most people here already probably know this one... (C - capacitance, f = frequency, V = voltage). Prescott has capacitance issues and higher power draw and heat output. Generally power output scales about linearly with frequency and exponentially with voltage. However, please dont try to check this by measuring temperatures, because in most cases heat transfer between core and HS, and core to MB through pins, and from HS to air is not linear and easily predictable

[pik-ard v1.1]

Originally posted by ***Deimos***
I doubt most people here would bother taking the time to go to the page when most of these numbers can be calculated (at least roughly with the fsb x multi), in a split-second.

People enter resistence and get Voltage... hmmm???
V = R x I (grade 6 stuff). So you need to know current in a 'part' before hand. However, if you're dealing with processors, typically current varies (up to a max) with the load. Typically only the voltage is constant (semi-constant at least, because it does bob up and down as the voltage regulators adjust for the load).

Dynamic power = C x f x V^2 - Most people here already probably know this one... (C - capacitance, f = frequency, V = voltage). Prescott has capacitance issues and higher power draw and heat output. Generally power output scales about linearly with frequency and exponentially with voltage. However, please dont try to check this by measuring temperatures, because in most cases heat transfer between core and HS, and core to MB through pins, and from HS to air is not linear and easily predictable

i actually didnt know about dynamic power, but i already posted the current problem. :stick:

how do you find out the capacitance of different proccys, is there a spec sheet somewhere you can find this out?

[Lithan]

The only one of those I'd ever use is the F to C. And that's only when I needed an exact result. I can come within 1*C in my head.

One that calcs the impact of resistance on voltage or the wattage dissipated by a resistor at a certain resistance and voltage would be welcome.

[pik-ard v1.1]

also, for the ram, if you do something over 500 (ddr1000), it chops off the last digit. this would be useful for gfx card ram(well... in the same sense that the page is useful).

[bh2k]

well pic i used a function to cut it to 3 chars so you could get DDR333.7, but who has DDR1000 anways?

[pik-ard v1.1]

graphics card ram.

x800XT = 520/1120

set it to... 550/578 in whatever... 578 = ddr1156. ;)