Need PSU help for my setup

**REZTRIBUTE** · 04-20-2005, 07:06 PM

Hey,

Im planning and buying carputer parts to put in my cavy but im having some problems deciding what to use for power. By the way I already

and

but my brain is getting fried.

here is what im planning:

foxconn 650m02 mobo w/ onboard video,audio,lan
celeron 2.4GHZ 400fsb
lilly 7" touchscreen
external DVD/CD-ROM drive (powered by usb)
USB GPS
60gig HDD
512MB pc2100 RAM
Card reader (maybe)

I was looking at using the OPUS 150W dc-dc but I dont know if it has the power that I need. Any sugestions?

**Bugbyte** · 04-20-2005, 10:07 PM

Search on terms "power calculator". You'll find links to power calculators that will allow you to figure out if the Opus is enough.

**intense** · 04-20-2005, 11:11 PM

check out my thread, i just went through the exact same thing.

http://www.mp3car.com/vbulletin/show...050#post450050

**REZTRIBUTE** · 04-20-2005, 11:52 PM

I checked some of the power calculators but do they take into account that I am using on board video and audio?

**intense** · 04-22-2005, 10:06 AM

If you look beside the CPU and just above the SIS 650GX chipset there is a 4 pin power connector that I spoke about in other threads. This means that your CPU gets most of its power from your 12 volt rail. On the opus there is a max of 5 amps. 12x5 = 60 watts max. The 2.4 gig celeron alone pulls close to 50 - 60watts at peak. So no I don't think its gonna work with that mobo and cpu.

**REZTRIBUTE** · 04-22-2005, 11:40 AM

ok I have been looking around and some people have 2.4 celeron systems that are running off the OPUS 150W but from what I have been reading the 2.4 celeron sucks 59.8W which fills up the 12V rail. I have a DVD drive and a hard drive that come off the 5V rail but I think im gonna be screwed to find the rest of my parts that dont pull from the 12V rail. Does anyone have a suggestion on a PSU setup?

**intense** · 04-22-2005, 07:17 PM

your hard drive and dvd rom pull from the 12 volt rail as well.
that system will pull 8 amps or more on the 12 volt rail easy.

you could try a less powerful cpu. if not, run a power inverter.

**REZTRIBUTE** · 04-22-2005, 09:45 PM

Well im using a laptop HDD that says it pulls .48A from the +5V rail and the dvd drive is external for laptops that is powered by the usb port (? rating, Its at my other house and i haven't seen it yet). I think i will try to Built an MK-4.5 but will it be enough to power my celly?