 signmeuptooLove those still alivePremium
join:2001-11-22
NanoParticle
kudos:4
 ·Optimum Online
 ·callwithus
·Future Nine Corp..
| reply to The Flash
To The Flash: That is something that comes from FUD that PC Power and Cooling published online. One single 12VDC rail is NOT necessarily ANY better, and CAN be WORSE. Why?
Here:
Most power supplies with multiple 12VDC rails only have so called "rails" from the fact that a single 12VDC rail is split up with a number of separated over current protection sub circuits. It *IS GOOD*, generally, to HAVE over current protection. Why? Because any given wire and/or connector can handle only so much current before it melts and burns and even catches fire. Also, other damage can occur to the rest of the system from a great an out of control load or short circuit. By setting a 12VDC rail into sub circuits simply with individual over current protection, you add a safeguard to things.
Now:
Some supplies DO HAVE "real" multiple 12VDC rails, such as Corsair's brand new HX-1000, which has TWO discrete 12VDC rails, but with over current set at, according to official statement, 40 amperes each. It is an awesome power supply.
However, IMHO, the ideal would be to have each so called rail be 22 amperes over current set, and to have the rails balanced as far as load. Here is an example:
Let's say the total possible output of the total 12VDC of a supply is 800W. The total maximum amount of available current support would then be about 66.7 amperes. Break that down by dividing by 4 rails and you have 16.67 amperes per rail if they all loaded down exactly the same. *HOWEVER*, since loading is NEVER balanced on a given system, each rail has its overcurrent set at 18 or even 20 amperes. So that means 4 rails of which each is over current set at 20 amps, but they all can't go to that amount totaled.
This is how supplies are done, with the overcurrent set high enough to take into consideration that no one's system loads down each rail equally.
Now:
On top of this, PCP&C still insists passing around even MORE marketing FUD: Their company boss, even recently, decried the use of modular connections on consumer power supplies. He insists that it increases the possibility for failures, a significantly reduced voltage/increased resistance, and even burn out danger. Bull crap I say. Real world tests done by pros have found that there is only a voltage drop of well less than .3%, on, say, a 12V run: That would mean 11.997 Volts DC. Big freaking deal. Sure, as load increases, that increases some, but no matter. Besides, they DESIGN the supplies to OUTPUT a regulated voltage based upon readings after the connectors, so voltages are made for it.
Officially, a supply is within spec if it is withing +/- 5%, or 11.4 - 12.6, and few supplies ever come close to being within 1% of baseline anyways, or within 11.88 - 12.12 throughout their full loaded range, though some are.
So FUD on both arguments by PCP&C. Sure, they make good power supplies (even if some models have Teapo capacitors and only a 40 degrees C temp rating for full load), but they put out pure B.S. that misinforms the public. Keep in mind that this is the same company that refuses to use 120mm - 140mm fans on the underside of the supply, insisting that only 80mm end fans work acceptably, even though it isn't true. I'd rather have a supply with modular and safe rails and a quiet 135mm fan that is still rated for 50 degrees C than what they sell. Don't get me wrong, I'm not saying they make bad product, they DO make very good supplies (well, their OEMs make them, but I digress...) What I am saying is, don't listen to FUD.
--
You know your life has gotten "DICEY" when it turns into an episode of LOST, like my ex wife, who I swear is one of "The Others". Cancer and other diseases kill fellow members here at DSLR! Easy: Join us in Teams Helix and Discovery to save the world! |
