I wonder if half the people who spout their unfounded knowledge of mutli-rail power supplies have actually got a meter out and measured their components under loads.
Niko, Mgrant?
I don't know where YOU got the info, but I think you should try a few hardwire-on-hand tests. There is no such thing as true combined multi-rail amps, it's still coming from the same power source; there are a few companies that have a 'combining' architecture that supposedly meshes the rail amperage together when required, but the efficiency is awfully low, it's unstable, and it doesn't give you twice the amperage(or three times/four times etc), rather it's 20A+20A = 30 or 31A; you lose power efficiency in the process.
If I'm not mistaken your PSU model and it's similar product line are four rails rated at 12v each, not 12/12/18/18. The "62" amps they speak of is maximum overload, not maximum safe excluding overhead. And the funny part is, in your decision to make up the number for the third and fourth rail of your model you must have miscalculated because you left out to 2amps; unless of course you were being conservative for overhead purposes
The rule of thumb is, (and especially for gaming) mutli-rail PSU is a hoax.
Intel was forced to put time into safety technology and then later pulled their findings, admitting that multi-rail power supply was essentially pointless.
Unfortunatley by that time, two years had passed and the market had been bloated with this 'new' technology for PSUs. Even more unfortunate, it became so believed by the masses and computer geeks alike, that companies are STILL getting away with pulling the wool over consumers eyes, by marketing super hyper flashy high wattage ATX 2.2 units.
It's no coincidence that it's difficult to find single rail units supplying over 20 amps to a single rail. Fortunatley, some higher end, or oddball companies are retreating from the saturated multi rail market and are offering up the power that we actually need.
Niko I think you reading 900 pages is what's gotten you confused, like countless other unknowing people. If you'd just found one page, the first page, with the right information you're brain wouldn't hurt as much
Whoever said multiple GPU with a multi rail PSU made me almost choke. I wouldn't even dare try that. Personally I don't see how other people can even sleep at night, risking running $1,000 worth of GPU cards on such horrible power supplies.
You get a big damn case and mount two single rail high amp units.
The thing that ices the cake, is that because of this market, the companies that sell these products don't give you the most vital information : the amps on the 12v rail.
Freak, if you are only using one late modern GPU, then a 550-600 watt 34+ single rail PSU will do you and your other components fine. Fortunatley you can get one for about $100-120 USD, from a Tier 1 quality manufacturer such as Silverstone.
Or you can pay $250 + for some absurd 800 watt that will never fully power your card.
12v is 12v. It all falls on the psu specs. Read and understand them. Some psu companies pull that crap where the 12v rail is 250 watts if the total on the 3.3 doesn't exceed 200 watts or the 5v is 220 watts as long as the combined total doesn't exceed 410 watts and the moon is inline with mars and your girlfriend isn't on the rag.
