OPus90W How far has it been taken?

Cat Monkey · 11-23-2004, 05:48 PM

OK

OPUS 90W powering m10K+HDD. I am assuming thats cool. But what about the 10W hauppage USB2 WINTV/FM am i asking for trouble?

Also was hoping to add my irman BT WiFI + webcam? HAs anyone done anything similar? who has a 90w system running well with a lot of USB addon's? How far can this supply be pushed (obviously to 90W) what is the typical power consumption of the popular carputer boards peripherals etc... is more my question?

i don't know? anyone?

Bailey · 11-23-2004, 06:48 PM

I know that a M10k+hdd is nothing, and an additional 4 USB devices is nothing. Use the calculator thingy on www.epiacenter.com I'm sure it comes nowhere near 90W.

samc · 11-23-2004, 07:09 PM

I've had gps, mII 10k, my usb dvd, laptop hd and lilliput all at once. But I bet I was pushing the limits.

The Grinch · 11-24-2004, 12:42 AM

You need to consider that the power supply provides 3.3 volts, 5volts, and 12volts. 90watts is a fixed split between the different voltages. You get about 30 watts for the 5volts, 30 watts for 12 volts, and the remaining power goes towards 3.3volts and stand-by power.

roleary · 11-24-2004, 10:30 AM

Grinch - you're telling me that when calculating the power usage, i shouldn't be adding up t0 90, but rather should be adding up to 30 on each line??? i haven't heard that before.... and that definitely changes how close i'm getting to maxing out my PS!!

Epia M210K, 2.5" laptop, 3.5" Seagate, Laptop DVD/CDRW, Lilli 7" TS, Griffin PowerMate, Delorme Earthmate, SanDisk 8-in-1, Wireless KB/Mouse

SAScooby · 11-24-2004, 10:37 AM

the grinch is 100%

you can use this to your advantage as well
by spreading the load across the different rails and even maybe using an externally powered usb hub

in xp in the device manager it also shows how much power the device requires to function on usb typically 500ma a device which is next to nothing !

The Grinch · 11-24-2004, 11:14 AM

Quote: Originally Posted by roleary

Grinch - you're telling me that when calculating the power usage, i shouldn't be adding up t0 90, but rather should be adding up to 30 on each line??? i haven't heard that before.

If you take a desktop P/S and look at the label, you will see the different amp ratings for each voltage. Most people just never bother to read it or understand it.

Formula: Volts x Amps = Watts
On the OPUS 90watt P/S you get:
- 5volts @ 6A. 5V*6A= 30 watts
- 12volts @ 2.5A. 12V*2.5A= 30 watts
- 5volt standby @ 1.5A. 5V*1.5= 7.5 watts
- 3.3volts @ 6A. 3.3V*6A= 19.8 watts
- -12volts. @ 0.2A. 12V*0.2A= 2.4watts
Total = 89.7watts

Cat Monkey · 11-25-2004, 05:05 AM

Quote: Originally Posted by The Grinch

If you take a desktop P/S and look at the label, you will see the different amp ratings for each voltage. Most people just never bother to read it or understand it.

Formula: Volts x Amps = Watts
On the OPUS 90watt P/S you get:
- 5volts @ 6A. 5V*6A= 30 watts
- 12volts @ 2.5A. 12V*2.5A= 30 watts
- 5volt standby @ 1.5A. 5V*1.5= 7.5 watts
- 3.3volts @ 6A. 3.3V*6A= 19.8 watts
- -12volts. @ 0.2A. 12V*0.2A= 2.4watts
Total = 89.7watts

Interesting. Thanks

Bailey · 11-26-2004, 09:36 PM

How do you know if a device operates at 5, 12, or 3.3 volts?

SAScooby · 11-27-2004, 12:25 AM

Have a look at the colour wires going to it ?
typical desktop cd/dvd/hard drives consumes power from both 12v and 5v, 12v is yellow, 5v is red, laptop drives only consume 5v
almost all usb devices consume 5v, unless externally powered, mobo devices consumes 3.3v or lots less
fans also sit on either the 5v or 12v rail
read the product and it will probably tell you what it needs

muldrick · 12-27-2004, 06:40 PM

I went to: http://carpc.kyferez.com/index.html?...alculator.html and used the calculator, came to 190 Watts!!! Then I went to the Epia Center calculator, it came to 80Watts. Which ones right?
I'm using the Opus 90W on a:
Intel (Kitty Hawk 1.5) Motherboard 1.2-GHz Celeron R1 w/370Pin ZIFF Socket
2. 256 MB Ram Sticks
1. 3.5" (80 Gig) HD
1. Lilliput (will be Zenarc soon)
1. USB Mouse
1. USB Keyboard
1. 4-port USB Hub (5v powered)
1. PCI card for WiFi
1. GPS Mouse
1. MXD 1000 XM Tuner box (serial)
1. External Audigy sound card (basic one...not the "NX2")
1. running a remote power lead (12v from Opus) to my 400W amp.
I'm worried....
I want to add a DVD Slim (Panasonic Slot Load) drive (5volts) and a rear view camera. (12volts)
Should I be worried? The calculators show completely different numbers.
Please advise, anybody running this or more on a 90W Opus?
What will happen if it's too much, fry it?, shorten the lifespan?

Maybe I can use a 5v DC converter to run the DVD and usb hub? What do you recommend?

naveedh · 12-27-2004, 07:31 PM

i havent used the epia center but my guess i that is strictly for mini itx not atx which you seem to be running.

KyferEz · 12-27-2004, 07:32 PM

muldrick,
If by Epia center calculator you mean the one at http://resources.mini-box.com/online...simulator.html then there isn't a way to properly calculate your power usage using that one; it doesn't have many of the components you are using.

If you used a different one, please provide a link so I can make a good comparison, find out why the results are so different.

Thanks, KyferEz

muldrick · 12-27-2004, 07:37 PM

Yes, mine is a mini ATX, I did use both calculators in a general way and did not use EXACT component. But the number were way up there regardless.
Kyfer, I used this calculator:http://carpc.kyferez.com/index.html?...alculator.html

and I'm currently searching for this 12 to 5v converter...or see if I can build one myself.

KyferEz · 12-27-2004, 08:38 PM

muldrick,

I was asking the Other calculator you used. The one at the link you provided is mine. That is my website

which is why I want to make a comparison to the other calculator you mentioned but did not provide a link to. I figured it out now tho; I hadn't read the above post from Bailey which mentioned this link: http://www.epiacenter.com.

The EPIA system boards are completely different from mATX systems in power consumption. The processors consume much much much less power, which is the Main draw you have to worry about, unless you also use a high preformance video card.

The other difference is that my calculator is based entirely on absolute maximum possible current draws, where the epiacenter one is not.

KyferEz