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single or multiple rails?

post #1 of 16
Thread Starter 
When DX10 comes out, I will definitely get it. I might also go SLI/CF DX10. However with SLI/CF, I will need A LOT of power. My current plan is to get the PC P&C 610 Silencer now for my entire system and when I go SLI/CF, I will go dual PSUs. Silencer for video cards and a cheaper PSU for the rest of the system. Will a single rail work or will a multiple rail PSU work better?
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post #2 of 16
why not just get a massive PSU now so you don't have to get a second one later? such as the PCP&C 1KW. and multiple rails on a single PSU is better than a single 12v rail.
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post #3 of 16
Quote:
Originally Posted by cgrado
why not just get a massive PSU now so you don't have to get a second one later? such as the PCP&C 1KW. and multiple rails on a single PSU is better than a single 12v rail.
:withstupid (too bad they did away with that smiley, was my fav!)
I was originally thinking that 1000W was excessive, but in light of the recent anouncements of the DX10 cards consuming 250 watts a piece, it may be necessary! Of course a 1000W PSU will cost you, and you may be better off getting two smaller ones (on a price point at least).
    
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post #4 of 16
Quote:
Originally Posted by RonindeBeatrice
:withstupid (too bad they did away with that smiley, was my fav!)
I was originally thinking that 1000W was excessive, but in light of the recent anouncements of the DX10 cards consuming 250 watts a piece, it may be necessary! Of course a 1000W PSU will cost you, and you may be better off getting two smaller ones (on a price point at least).
omg they did get rid of it. that sucks. probably promoted a negative atmosphere. but yes, a 1KW does cost $500. as much as a good Proc/mobo combo.
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post #5 of 16
Poor IWS smiley, some thought it was insulting, they didn't understand him
The new up comming needs of PS, wow, who would of thought
Cripe, they even have exteranp PSs for vid cards too!
Dual isn't such a bad idea. A multi rail SLI for the cards and a powerful single rail for the system.
    
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post #6 of 16
Those video card PSUs were 300W right? You'd need one for EACH of your G80/R600s lol.
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post #7 of 16
EDIT: nope, not gonna cut it if they're 250W each

Enermax galaxy for $349.99

http://www.newegg.com/Product/Produc...82E16817194008

Division over the rails might be an issue:
http://www.enermaxusa.com/support/do...heet_0803b.pdf
Rail1 and Rail2 are CPUs only; total 34A. Good.

Rail3, Rail4, and Rail5 for GPU and all else. 41A. You'll need 41A for the GPU's alone at 250W each and 2 cards. Not good.

Separation of the rails in two disticts blocks hurts this one.

At the moment, I doubt any PSU is up to powering two 250W cards.. and that includes the PC Power and Cooling units.

These are the specs of the 1KW QUAD SLI PC P&C unit:
+5V @ 30A
+12V1 @ 16A (CPU)
+12V2 @ 16A (Drives)
+12V3 @ 36A (Graphics) --> NOT enough.
+12V1,V2,V3 = 66A (70A peak)
    
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post #8 of 16
Thread Starter 
So what do I do then? SLI/CF is a hypothetical situation. I doubt I'm even going down that path.
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post #9 of 16
I'd get the silencer and use it for now. Dual PSUs is not a bad idea at all.

Personally, I'd use the silencer for the rig in the future, and get a more powerful PSU for the GPUs (like the 750W silencer). Do note that 250W is just an indicate, and the number for full load AT STOCK speeds. When you overclock those cards, you might see currents in excess of 50A on the 12V rails, just for those two cards

However, we'll see the actual numbers when the cards come out. For now, the 610W Silencer is fine.
    
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N/A 
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post #10 of 16
I was just reading an article in the lastest Maximum PC talking about GPU power. In short they stated that at the rate we are going we will be sitting next to our dryers for the 220v plugs!

pink
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