power requirements of a motherboard

[avijay]

I'm trying to find the total power consumption of the ASUS A8N-E. I've got the manual but it doesnt specify how much current the 12V, 5V, and 3.3V rails draw under different load conditions. How do I find out what these values.

 

[avijay]

anyone who knows where to find such information?

 

[avijay]

c'mon guys.. someone must know! Please help me out!

 

[SirBrass]

chill. this isn't an irc chat. wait a day or two.

 

[Promethply]

The number and types of components and peripherals installed in your system determine the total power consumption of your system.

 

[avijay]

Originally posted by: Promethply
The number and types of components and peripherals installed in your system determine the total power consumption of your system.

Well this is what I'll connect to the motherboard:
A 80GB Seagate HDD
A 120GB Seagate HDD (80GB as master and 120GB as slave)
A FDD
A NEC DVD Burner
A CDRW/DVD Drive
A Radeon X700 PCI-E Graphics Card
A 56K Modem
A DSL Modem
A USB Printer
Keyboard, Mouse and Montor
and sometimes I'll connect my flash drive as well.

 

[Promethply]

Which Socket 939 CPU, and how many sticks of RAMs do you have/plan to use?

 

[Jakebrake]

You should probably buy a multimeter and make the measurements yourself. That will give you the most accurate data you're going to get.

 

[SVT Cobra]

add 15 watts to the toal of all the power comsumption of your components and that should be enough for the mobo lights, fans ect...

 

[avijay]

Originally posted by: Promethply
Which Socket 939 CPU, and how many sticks of RAMs do you have/plan to use?

I'm using a A64 3500+
1GB (2x512MB) Dual Channel

Do any of the manufacturers specify the current drawn on different voltage rails for any of the components like the graphics card, CD/DVD Drive etc. I've tried looking for these values on different manufacturers websites like ASUS, Gigabyte, Samsung etc. to just find out which voltage rails the component uses and I've got nothing so far. So let me know where I can find the info. apart from measuring it myself.

 

[indianduddawg47]

CD Drives has the info on the labels.

Check out this howto. If you have a 90nm core, the cpu consumes 67watts, which is about 5.6A on the 12V line.

http://www.bleedinedge.com/guides/psu_select/psu_select_01.html

 

[avijay]

Originally posted by: indianduddawg47
CD Drives has the info on the labels.

Check out this howto. If you have a 90nm core, the cpu consumes 67watts, which is about 5.6A on the 12V line.

http://www.bleedinedge.com/guides/psu_select/psu_select_01.html

I've seen that article already. That's why I wanna find out where I can find out all that stuff from. I wanna know how I can compile my own table without having to sit and measure the stuff myself.

 

[Promethply]

Originally posted by: avijay

Originally posted by: Promethply
Which Socket 939 CPU, and how many sticks of RAMs do you have/plan to use?

I'm using a A64 3500+
1GB (2x512MB) Dual Channel

Do any of the manufacturers specify the current drawn on different voltage rails for any of the components like the graphics card, CD/DVD Drive etc. I've tried looking for these values on different manufacturers websites like ASUS, Gigabyte, Samsung etc. to just find out which voltage rails the component uses and I've got nothing so far. So let me know where I can find the info. apart from measuring it myself.

OK, in that case, if you get a PSU with at least 25Amp on its 12V rails, and with a total of 430W, such as this one:

Antec TP-II 430

which has a peak total of 34Amps on its dual 12V rails, your system will run smoothly.

 

[avijay]

Originally posted by: Promethply

Originally posted by: avijay

Originally posted by: Promethply
Which Socket 939 CPU, and how many sticks of RAMs do you have/plan to use?

I'm using a A64 3500+
1GB (2x512MB) Dual Channel

Do any of the manufacturers specify the current drawn on different voltage rails for any of the components like the graphics card, CD/DVD Drive etc. I've tried looking for these values on different manufacturers websites like ASUS, Gigabyte, Samsung etc. to just find out which voltage rails the component uses and I've got nothing so far. So let me know where I can find the info. apart from measuring it myself.

OK, in that case, if you get a PSU with at least 25Amp on its 12V rails, and with a total of 430W, such as this one:

Antec TP-II 430

which has a peak total of 34Amps on its dual 12V rails, your system will run smoothly.

That still doesnt answer my question about where to find power consumption values on manufacturer website for the various components so that I can compile my own little table based on which I can decide which power supply to get.

 

[Promethply]

Oh well, good luck -- Google is your friend 😉

 

[avijay]

Do you think asking one of the guys at AT to write a PSU selection guide would be worth a request. I definitely would like to know where Anand and the guys get their AMP values from without plugging in a DMM into every component.

 

[Operandi]

Originally posted by: avijay

Originally posted by: Promethply
The number and types of components and peripherals installed in your system determine the total power consumption of your system.

Well this is what I'll connect to the motherboard:
A 80GB Seagate HDD
A 120GB Seagate HDD (80GB as master and 120GB as slave)
A FDD
A NEC DVD Burner
A CDRW/DVD Drive
A Radeon X700 PCI-E Graphics Card
A 56K Modem
A DSL Modem
A USB Printer
Keyboard, Mouse and Montor
and sometimes I'll connect my flash drive as well.

The only things that have any meaningful power draw is the X700 and the Seagate HD, both draw from the 12v rail. For those two components, prolly no more then 70 watts. In addition to a A64 3500+, a 300-350 watt PSU should cover that easily, look at Seasonic and Forton/Sparkle.

 

[Promethply]

Sounds good 🙂

Do you think asking one of the guys at AT to write a PSU selection guide would be worth a request. I definitely would like to know where Anand and the guys get their AMP values from without plugging in a DMM into every component.

 

[imported_whatever]

I would just go with one of the Fortrons, they are cheap and excellent PSUs. A 530W model powered my friend's Prescott at 1.6v/3.6GHz fine, and if it can power that, it can power just about anything.