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Thasp

Funny PSU calculator.

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Check how much this one lies for your setup. http://extreme.outervision.com/psucalculator.jsp

 

It says my spare server/classy lady machine requires 651 watts, but it works just fine at full load eight HDs going + dnetc on both cores with a 500 watt sparkle.

 

It says a 2.7 GHz opteron takes 211 watts. 2.85 GHz takes 237 watts. :sweat:

 

No wonder 1KW PSUs are coming out by the dozen on newegg.

 

It's funny because I've seen it posted at least four times already on other forums.. people bought 1KW PSUs for systems my sparkle could have powered and had 100 watts in reserve for.

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Well, if you got he cash for 1KW than buy it and you don't have to worry about a thing for a few years! :) Don't trust the calculator either! It told me I need a 750W PSU for my set up!

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I see your point but they did have a qualifying statement at least.

 

ATTENTION:

The recommended total Power Supply Wattage gives you a general idea on what to look for BUT it is NOT a crucial factor in power supply selection! Total Amperage Available on the +12V Rail(s) is the most important, followed by the +5V amperage and then the +3.3V amperage. Example: PSU you want to buy has 400W total wattage output but only has 16A on +12V rail. But your configuration might require 20A on +12V rail.

 

Please read the following power supply recommendations (silentpcreview.com) site before you buy one of the very important pieces of computer hardware - power supply.

 

And It is FREE.

Not like it's one of those "PC Doctor" programs that will get your PC running perfectly for only $39.99

 

Hopefully the fact that it errs on the "high" side will prevent new users from buying something that is just too small for their needs. And I would bet in most cases the suggested power is a lot closer than the overclocked examples we are using.

 

We have to remember that most motherboards don't have a site that lists "recommended" components (Or savvy users like Thasp, RohypnoL, and HITandRUN) so a lot of new users are on their own with selection.

 

certainly a harmless diversion from the forum's general craziness :D

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I got a OCZ 600-SLI powerstream in mine and the 520powerstream would do it fine but....I got a 408watt recomend....

 

plus this.....

 

 

The recommended total Power Supply Wattage gives you a general idea on what to look for BUT it is NOT a crucial factor in power supply selection! Total Amperage Available on the +12V Rail(s) is the most important, followed by the +5V amperage and then the +3.3V amperage. Example: PSU you want to buy has 400W total wattage output but only has 16A on +12V rail. But your configuration might require 20A on +12V rail.

 

Umm...Man Sound you beat me to the punch...arrrrrrrg....;)

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so did you notice the little message with the big red blinking word? Dont slam them too much they are probability assuming the same kind of power reporting that some how gave some PSU's god like rating but fried even low end computers because they got overloaded.

 

 

 

attention.gif

The recommended total Power Supply Wattage gives you a general idea on what to look for BUT it is NOT a crucial factor in power supply selection! Total Amperage Available on the +12V Rail(s) is the most important, followed by the +5V amperage and then the +3.3V amperage. Example: PSU you want to buy has 400W total wattage output but only has 16A on +12V rail. But your configuration might require 20A on +12V rail.

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Guest YuKoN

Recommended PSU Wattage: * 537

 

LOL! good thing i'm running a 650!

 

that is one funny calculator-

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I have personally experienced problems of having an inadequate PSU (lockups in games, CD burners that refuse to burn) and have had to fix a computer that a faulty power supply managed to ruin (everything that was connected to the power supply was dead, like the motherboard and drives, but not the processor, PCI cards, or RAM). I won't make those mistakes again.

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The PSU utilization, surge compensation, and capacitor aging fields make a huge impact on the wattage recommendation.

The range for my sig-rig is from 249W (60% PSU utilization, 0% surge compensation, 0% capacitor aging) up to 830W (100% PSU utilization, 50% surge compensation, 50% capacitor aging).

If I select 100% PSU utilization, 10% surge compensation, and 10% capacitor aging; then it recommends a 498W PSU (currently running 550W).

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Mine weren't too bad, from my sig:

 

#3 - 201W

#2 - 437W

#1 - 407W

 

If you consider them to be "system power draw" I think they're a tad high but for recommended PSU wattage they're ok. It sure has those dual-core 64-bit CPUs consuming more power than my old XP-M though.

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