Will I have enough Power?

[FunkDaMonkMan]

I am buliding an in-car PC and have two powersupply options:

Number 1 has a little more power than #2, but is more expenive.

Here are the complete specs:

Number 1: (rated from 72w-143w)
+3.3
7 A

+5 plus +5VSB
7A

+5VSB
1.5 A

-12
0.2A

12
8 A


Number2: (rated at 70w-100w)

+3.3
5A

+5
5A

-5
0.2A

+12
6A

-12
0.2A

+5 vsb
2A




I would like to use a
DFI Micro ATX (http://www.newegg.com/app/ViewProductDesc.asp?description=13-136-131&catalog=22&depa=1) motherboard with an xp2400 Mobile.
The system will also have a full-size dvd/cd-r, WD 80gb HDD, and a usb gps device (5volt).

Are either of these powersupplies going to have enough juice to push this system, or am I going to have to go with the much slower EPIA system?

[Graphic67]

The first choice is the only one that I would consider. The power requirements would just be too close the the max on the second option.

[FunkDaMonkMan]

So, do you think the 1st one will take the load?

[Graphic67]

Yes, if it is from a quality manufacturer and the ratings are realistic, but you will not have much (if any) power for expansion.

[FunkDaMonkMan]

bump, anyone else?

Is there a guide anywhere that tells the average power consumption of certain devices?

[Graphic67]

This article has some basic figures but keep in mind that the article is over a year old. http://firingsquad.gamers.com/guides/power_supply/

Also read the first post in this thread by Larva:
http://www.ocforums.com/showthread.php?s=&threadid=252752

[FunkDaMonkMan]

Thankx, It looks like I may be low on the 12v line. The other lines look to have plenty of power. I wish I could find the power usage of the mobile XP chips.