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How strong of a GPU will this PSU support? - Page 2

post #11 of 24
I think with a multi-rail setup, they would somehow attempt to share the load.
I say "attempt", because I would suspect they couldn't be a perfect balance.
Not all the time, or at least probably not as well with a lower quality unit.

But I'm really speculating here.
A bit of research may be in order,
especially if someone more knowledgable on them doesn't happen upon this thread.

Found this:
http://www.overclock.net/t/1061943/how-do-dual-rail-psus-work
Edited by Rezard - 4/12/13 at 9:05pm
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post #12 of 24
Thread Starter 
I cannot find a manual for my PSU anywhere. Possible that these PSU's are rebranded, or get rebranded to another company (Premier), but no luck on that. Found alot of sites in Russian.

If I were to get desperate enough, I could go dual PSU and just have a dedicated unit for my GPU. I've got another 350W PSU, but I really dont want to do this. There are all kinds of things that can go wrong this way.

I know I'm being hard headed in not wanting to buy a new PSU, but I'm learning and I'd like to see what can be done here.
    
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post #13 of 24
If each rail has it's dedicated components/cables,
you may be looking at the 10a (120W) rail being the main CPU/ATX power.

I don't see that rail powering your CPU and half that GPU alone,
but it really depends which cables run off which rail.

Hell--
You could always consider molex-to-whatever adapters to dictate the flow.
Still kinda need a clue which rail does what with the particular unit.

Maybe taking a look around at some other relative units might indicate some kind of standard. I would at least do that before venturing a guess. lol
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post #14 of 24
Thread Starter 
OK, so according to the ATX 2.2 standard...

24Pin gets power from 3.3V, 5V, and 12V1

12V 4Pin gets power from 12V2

All molex connectors get power from 12V1 and 5V

SATA connectors get 12V1, 5V, and 3.3V

Floppy gets 5V and 12V1

But, the standard goes on to say that this is merely a guide and it is still up to manufacturer to build a balanced unit.
    
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post #15 of 24
Well, now--

That would mean the big rail is for your CPU only.
You'd have a 120W rail to power your GPU.... and apparently, everything else.
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post #16 of 24
I REALLY would not try using a molex to 6 pin adapter, thats how I fried my old OEM PSU with my 6850. If you are set on getting a new GPU now I would suggest a 7750, no extenal pin adapters to worry about. However I would just buy a new SINGLE 12v RAIL power supply and get a powerful GPU later.
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post #17 of 24
An HD 7750 is a pretty decent card.
Much better than what you're stuck on.

Here's one I was literally just looking at in open box:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814131480R
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post #18 of 24
Thread Starter 
Yea, I'm somewhat persuaded to believe that they probably built this basic PSU around the guide and more than likely, the rail designations are per the standard.

Thats no fun, 120W for GPU and everything else. Well, at least I know my OC'd Phenom is getting fed whatever it wants. This would explain rock solid core voltages, no fluctuation no matter what I throw at it.

And now, I've been convinced that I must buy a PSU to get a powerful GPU. Thanks to all who contributed, if at least to stir the pot and encourage further learning.
    
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post #19 of 24
Thread Starter 
Quote:
Originally Posted by Rezard View Post

An HD 7750 is a pretty decent card.

Well, my 6450 runs about 1 hour per frame in F@H, with 160 Stream Processors.

7750 has 512 SP.

I'm really looking for quite a bit more folding power. I'm gonna have to upgrade PSU. At least I'll be ready when I finally decide to go for bigger CPU and nicer MoBo.
Edited by Baskt_Case - 4/12/13 at 10:18pm
    
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post #20 of 24
Quote:
Originally Posted by Baskt_Case View Post

Well, my 6450 runs about 1 hour per frame in F@H, with 160 Stream Processors.

7750 has 512 SP.

I'm really looking for quite a bit more folding power. I'm gonna have to upgrade PSU. At least I'll be ready when I finally decide to go for bigger CPU and nicer MoBo.

I can reccomend Corsair PSU's. If you are never going to use crossfire I can personally vouch for a CX600. Rock solid PSU that is. I can also vouch for the CX750 Im running now as well.
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