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Old 02-06-2007
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Default Multiple rails or one rail? What's the difference?

Just like the title states, what is the difference between multiple 12V rails and one?

I was under the impression that multiple rails isn't really a good thing compared to one strong rail, but everybody and their brother is slapping "next generation" and "multiple 12V rails" together in the same sentence.

What do I lose by going with a single rail system? What are the benefits? Cost/power consumption/stability/performance/upgrade possibilities... How are these impacted by multiple/single rails? In which ways (positive/negative)?

This might turn out to be some good information to sticky for the noobs that need help (such as myself, currently )
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Old 02-06-2007
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Here's two threads to get you started

http://www.jonnyguru.com/forums/showthread.php?t=757

http://www.jonnyguru.com/forums/showthread.php?t=1036
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Old 02-06-2007
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Not a bad few reads, but I still would like to hear from Jonny and OW.
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Old 02-06-2007
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Let me update what I mean by "not a bad few reads".

Jonny's PSU's for dummies post was great. I feel ten times smarter after reading it than I did going in. I will definitely keep that thing on my favorites list. I just don't think there was enough expansion on the 12V rail dilemma to satisfy my intense curiousity (and if you want to get the right answers to the weird questions, go to the guy who probably eats PSU components for breakfast )
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Old 02-06-2007
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IMO the best answer is to cover it all succinctly is this post:

http://www.jonnyguru.com/forums/show...71&postcount=3

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Old 02-06-2007
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Quote:
Originally Posted by Spectre View Post
IMO the best answer is to cover it all succinctly is this post:

http://www.jonnyguru.com/forums/show...71&postcount=3

I have indeed been underestimated before, but this is an all time record.

Lay the technical mumbo jumbo on me, I say!
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Old 02-06-2007
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Quote:
Originally Posted by PaulTa View Post
I have indeed been underestimated before, but this is an all time record.

Lay the technical mumbo jumbo on me, I say!
I wasn't underestimating you...it just doesn't matter for 99% of people. If I get some time later i might lay some mumbo jumbo down though.
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Old 02-06-2007
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The only reason I ask is that I want the best PSU for my new computer that I'm going to be slowly building from the ground up.

Here are the parts that I plan on putting into it over time-

Intel D975XBX2 mobo
8800 GTX (probably evga)
4 gigs of either Corsair or OCZ 800 mhz DDR2
250 gig RAPTOR HD (or a really good Seagate)
probably some really nice DVD drive
CD write/re-write
Intel Duo Core 6700/6600

I have a sneaky suspicion that I forgot some part or another.

Probably a nice sexy SilverStone case.

I'm partial to the SilverStone Olympia 650 that Jonny recommended, mostly because it looks like a really beautiful piece of equipment. It has a single 12V rail.
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Old 02-07-2007
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Quote:
Originally Posted by PaulTa View Post
Here are the parts that I plan on putting into it over time-

Intel D975XBX2 mobo
8800 GTX (probably evga)
4 gigs of either Corsair or OCZ 800 mhz DDR2
250 gig RAPTOR HD (or a really good Seagate)
probably some really nice DVD drive
CD write/re-write
Intel Duo Core 6700/6600
Any sufficiently powerful PSU will power that, regardless of whether or not it's a single 12v. Most quad 12v designs will keep the highest drawing components seperated, and there's no disadvantage to an equally good single 12v design. The only real difference between the two in most cases is the protection circuitry limiting each 12v on the quads.

Only the really high end stuff like the Zippy SSI units actually bother with truly seperate 12v outputs - that approach is too costly to do for most of them.
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Old 02-07-2007
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Ok, so I'll probably be able to run all of the above without a hitch on the SilverStone Jonny recommended? I'm guessing that falls into the "sufficient" catagory.

SilerStone Olympia 650 watt.
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