DescentBB

do you think the video card would know if a 2nd rigged PSU was powering it?

im thinking about using a 200-250 ( or whatever it requires as a stand alone PSU ) Watt PSU to power a GFFX 6800 Ultra, i hope i get one for my BDay

I don't see why it would... voltage is voltage.

The immedate problem you would have is it would require an older AT style PSU or you are going to have "issues" getting a ATX PSU to power on for it without also being plugged into a mobo, but I think you should be able to find a solution.

-Krom

Don't most PSUs not work properly if not plugged into a motherboard?

Edit: What Krom said.

I've done crap like that before, where I used one for the WTX connector (since it was going bad) and another (older one) for everything else until I could purchase a new one.

You can jumper a couple of the pins on the mobo connector to turn on the psu. (14 and 16, maybe) Need to check how many watts the psu can produce at 12V - usullly there's a sticker on the side that says how the watts are divided among the different volt levels - and see if it's enough for the vid card.

okay so hypothetically this can be done. kool

nVidia turned the power req. down to 350W+..

well, if Mommy does get you a shiny new 6800, have daddy get you a shiny new PSU to run it all with.

in the other case, if you want to really wire two PSU's together, here's how you do it:



Try not to kill yourself doing it eh?

Don't worry about killing yourself with 12 volts. Under normal circumstances (something like 99.999% of the time), it's just not going to happen. You'd practically have to put the wires directly on your breating heart for it to do much of anything.

The PS_ON line shown in the pic is, in my experience, universally colored green (in some very old proprietary crap machines, it may be some other color like brown, but that's very rare). Connect it to ground, and you have a living working ATX power supply, whether you connect it to a mobo or not. The PSU won't care. Note that some (very) cheap supplies are designed to work properly only under load, and may overvolt when too weak of a load is present >.< AT supplies are more notable for this than ATX supplies, because the standards on ATX supplies are more strict, but it may still be an issue.

pATCheS wrote:Don't worry about killing yourself with 12 volts.

Umm... Consider who we're talking about.

Grendel wrote:nVidia turned the power req. down to 350W+..

is that with a entire system or stand alone power req's

STRESSTEST wrote:well, if Mommy does get you a shiny new 6800, have daddy get you a shiny new PSU to run it all with.

i already have a few that should have enough power output. i have 2 200's, 1 250 and 1 300

thanx for that image, i was wondering how you run two PSU's together

WarAdvocat wrote:

pATCheS wrote:Don't worry about killing yourself with 12 volts.

Umm... Consider who we're talking about.

heh WA, ive been hit with 220VAC @ 20 amps. blew me back about 10-15 feet and put me out for about 3-4 minutes. i think 12VDC is childs play compared to what ive been exposed to

Is that all that you needed Ace? I see this thread turning into a waste of server space soon. So I'll be closing it soon most likely.

Ask redbone in chat today "If you can wire two normal ATX PSU together so that the mobo turnes them both on at the same time" and see what he says. Should be good..

go ahead and close, i got my answer TY Guys

just buy a 450 wat psu damn people allways want to do it the hard way

Warlock wrote:just buy a 450 wat psu damn people allways want to do it the hard way

your missing the point, my current PSU doesnt have 2 UN-USED Circuit <-- **A SOLID REQUIREMENT** Molex plugs, and im definately not going to use just 1 and branch it off onto all 4 IDE Devices + The floppy you are out of your god dammed mind. that would cook the 12+ and 5+ Rails the instant i turned it on setup like that.

On a 200-250 Watt supply 10% load ~ = to 2x 1152 automotive lamps.

Put them on the +5V rail... thats where the mondo regulated circuits live for all the other voltages.

The lamps will indicate power state... bright=short or high load, and stop inrush current as well.

Also it's current... not voltage that kills.
And ACE if you had 20 amps cruising through you at 240V AC we would be calling you Mr. Crispy

You probably experienced several hundred milliamps...
enough to stop your heart... 20 amps woulda meant fatal blistering and expoding cells of everything major...

Sorta of like a weeney at a weeney roast, but yer the weeny, no fun bro.

You can't -- the cross current can kill one or both PSU's and evtl. the one or other component. Just sell the one you have and get a real PSU.

AceCombat wrote:your missing the point, my current PSU doesnt have 2 UN-USED Circuit <-- **A SOLID REQUIREMENT** Molex plugs, and im definately not going to use just 1 and branch it off onto all 4 IDE Devices + The floppy you are out of your god dammed mind. that would cook the 12+ and 5+ Rails the instant i turned it on setup like that.

Err... You are aware that that's exactly how it's wired up internally aren't you? As long as you don't exceed the current ratings of the rails it doesn't matter how many splitters and whatnot you have ganged off the end of it.

Canuck wrote:Also it's current... not voltage that kills. And ACE if you had 20 amps cruising through you at 240V AC we would be calling you Mr. Crispy

hey, i had no hair on my arms, legs, or neck and back for about a week after that happend. hell yah i know what its like, the SOB blew me back 10-15 feet and i blacked out for damn near 4 minutes. i was snapped out of it, by a friend who was showering me in 50 Degree tap water from the garden hose

Yep this thread is a waste of server space. Good info but it's not going anywhere now.

hell, i already asked for it to be closed.....