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Can you guys recommend a good Power Supply?

B

BroadbandGamer

Senior member
I'm replacing the one in my sig due to problems.

I'll need something that can run a SLI rig if I ever decide to go with two cards.

Right now I'm leaning towards this PS:

PC Power & Cooling

It's $200 but I know it can do the job. Maximium PC used it in their '06 Dream Machine.
 
By SLi rig do you mean DX10 SLi? Highend SLi DX10 or lowend? You need to be more specific in that category.
 
Originally posted by: dBTelos
By SLi rig do you mean DX10 SLi? Highend SLi DX10 or lowend? You need to be more specific in that category.
Click to expand...

I'm looking at buying the GeForce 8800GTX so I'm talking high end DX10 SLI.
 
Yea, for that you are going to need the new PC P&C 1KW (hasn't come out yet). It has a single 72A 12V rail, when it comes out buy it for your system.
 
Originally posted by: dBTelos
Yea, for that you are going to need the new PC P&C 1KW (hasn't come out yet). It has a single 72A 12V rail, when it comes out buy it for your system.
Click to expand...

I will probably never run SLI. I don't know if I really need a 1KW PS. So you think two 8800GTXs will require a 1KW PS? I was thinking quad SLI would need 1KW but not your standard two card SLI.

What about this PS:

FSP Group
 
When you're talking that much power, it'll probably be more cost-effective to use two PSUs. Say, a pair of Enhance ENP-5140GH or -5150GH for example (ewiz.com via Froogle to save a buck or two). Or a couple of Zippy HG2-6400Ps.

.bh.
 
Originally posted by: Zepper
When you're talking that much power, it'll probably be more cost-effective to use two PSUs...
Click to expand...
How does one go about starting two PSUs at the same time?

 
Originally posted by: BroadbandGamer
Originally posted by: dBTelos
Yea, for that you are going to need the new PC P&C 1KW (hasn't come out yet). It has a single 72A 12V rail, when it comes out buy it for your system.
Click to expand...

I will probably never run SLI. I don't know if I really need a 1KW PS. So you think two 8800GTXs will require a 1KW PS? I was thinking quad SLI would need 1KW but not your standard two card SLI.

What about this PS:

FSP Group
Click to expand...

We won't know how much power the next generation of cards draws till somebody tests; my guess would be no more then 150-200 watts DC.

That FSP is deficiently good but one of these Seasonics would be better.
 
Either the FSP Blue Storm or the Seaconic recommended would be more than fine for a next gen system with a single graphics card...if you are planning on Dual/Quad 8800GTXs then you might want to look into a PC&P 1KW 😉
 
How does one...

Several ways - replace SPST power button with a DPST momentary contact switch or rig a relay system.

.bh.
 
Originally posted by: Zepper
How does one... Several ways - replace SPST power button with a DPST...
Click to expand...
The power button goes to the mobo, doesn't it -- not the PSU?!?!?

I wish I could find a good article on doing this!

I can't believe, in this day n' age, that you should have to 'rig' anything. Somebody must sell a kit, don't you think?
 
DX10 cards are supposed to take 300W a piece. That means that you need a large, single rail PSU. The only PSU that fits the bill for high-end DX10 SLi/Crossfire is the new PC P&C 1KW with a single 12V rail. It hasn't come out yet however.
 
Originally posted by: dBTelos
Yea, for that you are going to need the new PC P&C 1KW (hasn't come out yet). It has a single 72A 12V rail, when it comes out buy it for your system.
Click to expand...

DOesnt anything over like 40a on one rail explode?
 
If any damned vid card eats 300W by itself, I'll eat my shorts... 😉 That would mean at least four 12V leads (yellow) to each card unless they use different contacts than are presently used.

Vin,

Well, the second pair of wires (which you have to supply) from the new switch goes to the green and a black wire on the extra PSU to start it up. Or you can run the pair of wires of the current switch to a dpst relay and have one pair of wires from that go to the mobo for the first PSU and the second pair go the greeen and black on the second PSU. Or you could run a relay from the 5V from the first PSU to switch on the second PSU (use a blocking cap to switch off the relay or use a one-shot to trigger the relay).

There are lots of articles around about using two PSUs - Google is your friend. Here are a couple of starting point diagrams I just whipped up off the top of my head for two or more methods. I'm still considering the possibilities of bonding the two green wires together so two would work exactly the same as one. I suppose they would have to be kept isolated some way as they are generated by different circuits - maybe a diode in line with each green wire would do it (perhaps just in one). One day I'll try that since it's cheap to do - and safe even if it doesn't work...

Or you could add a second SPST/NO directly to the green/black on PSU2 just for the purpose of shutting it off manually once the main PSU has gone off

Just thought of another way: use a DPDT (On-Off-On), spring-loaded center off switch. One way will be power on for both PSUs, other way for 4 or more seconds would be power off for PSU2. One of those hooded safety switches would work great for the purpose and look SERIOUS!.. 😀

.bh.
 
Since the PCI Express connectors are each rated at about 100 watts, and according to the spy photos each card has 2 of them, the maximum one of these cards can be drawing is going to be about 240 watts each (including the power from the slot). Also, even with watercooling, I doubt there's a way to dissipate more than that away from the cards. Total system power draw is going to be about 700 watts. The problem is that this is all going to come off the 12 volt rail and you're going to need a PSU with 4 PCI Express connectors. Right now, the only supplies that I know of that have 4 are the Enermax Galaxy 850w and 1KW and the PCP&C 1kw Quad, so you'll probably want one of those if you have to buy now.
 
Originally posted by: Gautama2
Originally posted by: dBTelos
Yea, for that you are going to need the new PC P&C 1KW (hasn't come out yet). It has a single 72A 12V rail, when it comes out buy it for your system.
Click to expand...

DOesnt anything over like 40a on one rail explode?
Click to expand...

where did you get that idea from....
 
Well, I'm currently running a Radeon 7000 - hope none of you doubled over and hurt yourself from laughter there 😉 - so I'll not be in the market for one of those absurd cards (or a kW of PSU either) any time soon.

.bh.
 
Here's a DPDT - ON-OFF-ON, spring-loaded switch for the dual PSU project. Now to find one of those safety hoods to finish it off...

All the toggle safety hoods I could find work only with SPST toggle switches and when you close the hood, it forces the switch off. So they wouldn't be any good for this purpose. If anyone knows of hoods that will work without messing with the switch itself, LMK.

.bh.
 
Originally posted by: pkme2
Deja vu?

My first choice would be Seasonic S-12 600W or Enermax Liberty 620W as second.
Click to expand...

Is this the Seasonic you're recommending?

S12 Energy Plus 650W

I've never heard of Seasonic. Why are you recommending them?

I was going to go with the PC Power and Cooling in my OP but it's too long. It would hit my blow hole at the top of my case.

Thanks for the help guys!
 
Originally posted by: BroadbandGamer
Originally posted by: pkme2
Deja vu?

My first choice would be Seasonic S-12 600W or Enermax Liberty 620W as second.
Click to expand...

Is this the Seasonic you're recommending?

S12 Energy Plus 650W

I've never heard of Seasonic. Why are you recommending them?

I was going to go with the PC Power and Cooling in my OP but it's too long. It would hit my blow hole at the top of my case.

Thanks for the help guys!
Click to expand...


Are you kidding? Seasonic is a major brand and makes some very good PSU's.
 
Originally posted by: gamefreakgcb
Originally posted by: BroadbandGamer
Originally posted by: pkme2
Deja vu?

My first choice would be Seasonic S-12 600W or Enermax Liberty 620W as second.
Click to expand...

Is this the Seasonic you're recommending?

S12 Energy Plus 650W

I've never heard of Seasonic. Why are you recommending them?

I was going to go with the PC Power and Cooling in my OP but it's too long. It would hit my blow hole at the top of my case.

Thanks for the help guys!
Click to expand...


Are you kidding? Seasonic is a major brand and makes some very good PSU's.
Click to expand...

Sorry, but I don't follow the PS scene much.
 
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