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Alienware X51 possible power boosts to go above 330w

post #1 of 10
Thread Starter 
I have an X51 an noticed it is a single 6 pin power cable to the power board. Can i use another psu to power that single 6 pin? keeping in mind the powerboard distributes all power to the rest of system after first reaching the powerboard.

My issue is here that I am happy to get a psu and attempt to run it with the x51, but I am trying to keep it "portable" in the sense of how it is at stock.

Now i can see two possible ways to accomplish this, but I dont understand enough about the power inputs going in.

1. I can buy and install a second DC jack cable for the X51 and another power brick and a Y 6pin adapter to merge the 2 DC's into one, but I am not sure of how the power will merge.

2. I am not sure if I can force the full amperage of a PSU into a single 6 pin power connector, and if so will it only work with single rail PSU?

Any help here would be great. Yes I know I am most probably going to told to scrap my X51 and buy a custom system blah blah blah...
I have the I7 GTX 555 model brand new for $700 about 5 months ago and there was no way of building a system for that amount that would have been this good to begin with, so please stay on topic. I am well aware that custom building will always be better then pre built. But that is what I am trying to change now.
Edited by Goose82 - 3/30/13 at 4:34pm
post #2 of 10
Quote:
Originally Posted by Goose82 View Post

2. I am not sure if I can force the full amperage of a PSU into a single 6 pin power connector, and if so will it only work with single rail PSU?

You can't "force" power into a component. The component "draws" whatever power it needs. The problem comes in when there isn't enough power to supply each and every component with all the power each needs.
Why do you think you have a power problem?
Edited by billbartuska - 3/30/13 at 7:44pm
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post #3 of 10
Looking at the x51 it seems as if the AC->DC adapter is an external power brick.

I don't see what you're trying to accomplish here. Why do you need more power?
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post #4 of 10
Thread Starter 
It's not
Quote:
Originally Posted by billbartuska View Post

You can't "force" power into a component. The component "draws" whatever power it needs. The problem comes in when there isn't enough power to supply each and every component with all the power each needs.
Why do you think you have a power problem?
that I think I'm under powered at but there are people running Getz 670's of the stock 330w psu brick and I would prefer not to chance it when upgrading to a gpu with a TDP higher then the rated 150w
post #5 of 10
You need to buy the DC>DC converter thats inside the X51 too.
post #6 of 10
Thread Starter 
Quote:
Originally Posted by Glends View Post

You need to buy the DC>DC converter thats inside the X51 too.
So the powerboard in the x51 can only take the 330w it is already taking?
post #7 of 10
Quote:
Originally Posted by Goose82 View Post

So the powerboard in the x51 can only take the 330w it is already taking?

I doubt the spec for the motherboards capacity is listed anywhere.

You could use an external PSU (read:desktop grade) and plug it in but you'd need to figure something out with the other rails because just using the 12v rail solo can be bad news.
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post #8 of 10
Thread Starter 
Quote:
Originally Posted by justarealguy View Post

I doubt the spec for the motherboards capacity is listed anywhere.

You could use an external PSU (read:desktop grade) and plug it in but you'd need to figure something out with the other rails because just using the 12v rail solo can be bad news.

Can you explain a little more as to why the solo rail to the 6pin power connector to the power board is bad news? The stock setup is just that, 330w directly to the power board and then distributed to the components from there.
post #9 of 10
Ok sorry to resurrect a dead thread but after Goose and I spoke for a while we came up with a solution. Mind you this will void any warranties and is only 24 hours into testing. The long term effects are still unknown. here's the link again...

http://www.alienwarearena.com/forums/topic/46276/hardware/alienware-x51-power-solution-more-power-/
post #10 of 10
Quote:
Originally Posted by Goose82 View Post

Can you explain a little more as to why the solo rail to the 6pin power connector to the power board is bad news? The stock setup is just that, 330w directly to the power board and then distributed to the components from there.

It's because the card will then draw some of its power from the power brick and some form the "new" PSU so you are effectively connecting to separate PSU's together. Both of thees PSU's have there own transformers and voltage regulators. When you connect thous to together you can end up with electric potential differences that in turn can lead to skewed voltages (to much or too little voltage going through the card).

It would be much smarter to just ditch the 330W power brick and run on a regular ATX PSU only.

Edit: Never mind. I see this a necro thread redface.gif
    
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