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 01-27-2007, 10:40 PM #11 (permalink) gone   Join Date: Jan 2007 Posts: 2,051 Er if the main poster is right then how come the An and Tech benchmark said 2 geforce 8s in Sli peaked out at 520 Wattage...I mean...that makes it seem like a 550 watts is not overkill at all, in fact not enough. http://www.anandtech.com/video/showdoc.aspx?i=2870&p=18 __________________ __________________
 01-29-2007, 12:02 AM #12 (permalink) Lord Techie     Join Date: May 2005 Location: смерти для спаме Posts: 8,473 before you post so arrogantly you may want to consider the fact that that is total system power consumption, and no doubt taken as a measurement from the wall. that means that the inefficiency of the power supply wasn't factored in. hypothetically we'll say it's 80% efficient (which may even be a bit generous) that makes the actual total system power usage something like 416w. now the fact is that oh so many people have power supplies well in excess of what they need. next time don't go out to prove someone wrong just because you can't handle manufacturers' marketing being wrong...... __________________ __________________
01-31-2007, 08:39 PM   #13 (permalink)
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Join Date: Feb 2005
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Quote:
 Originally posted by TriEclipse Just another addition to the thread. Why Watts Don't Mean Jack. The wattage of a PSU is a lame way to measure the actual output of a PSU. The total wattage given is the sum of all of the rails on a PSU added up (+3.3V, +5V, +12V1, +12V2, -12V, +5VSB). The way PSU companies will trick you, is by bumping up the Amps on the red rails. These rails are relatively minor, and don't really provide power to any of the major components of your system. However, they still count towards the total power output of the PSU, and this can skewer the numbers. The blue rails, are the important ones. The +12v rails are the ones that provide most of the power to the major parts in your system. The more Amps on this rail, the more power will be supplied to your system. Example; 400W Forton PSU and 580W Hiper. Both are excellent PSU makers. Look at this; Forton - +3.3V@22A, +5V@21A, +12V1@18A, +12V2@16A, -12V@0.3A, +5VSB@2A. Hiper - +3.3V@30A, +5V@36A,+12V1@20A, +12V2@18A,-12V@0.8A, +5VSB@2.5A. The 580W Hiper PSU has 4Amps more on it's +12v rails than the Forton does. Is 4Amps worth the difference of 180W? Don't make me laugh. So that would mean that this Forton that has been "labeled" 400W is near equal in power to a 580W PSU. Wattage doesn't mean jack.
Great thread. Nice to have you on board with an understanding of electricity....this is good reading too:

http://www.silentpcreview.com/forums...ic.php?t=23916
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 02-01-2007, 06:53 AM #14 (permalink) Techie Beyond Description     Join Date: Dec 2006 Posts: 19,993 u should make a new thread called y power wattages mean jack, that would be a great sticky __________________ I do not accept help requests and/or deleted threads/complaints by PM, Profile or IM/Email. Just ask on the forums! Also, I do have Lockerz invites if you want them, feel free to PM me your email if you want one :0 If I help you, or you just like what I said, rep me by clicking the or under my avatar; it helps me know that my advice actually helped you. .. But things don't go according to plan! My Actual Rig, 2009:
02-01-2007, 11:09 PM   #15 (permalink)
Ultra Techie

Join Date: Jul 2006
Posts: 869

Quote:
 Originally posted by vernong1992 u should make a new thread called y power wattages mean jack, that would be a great sticky
There's already so many good stickies in the Hardware sections of this forum, heaven forbid I add even more to the clutter. Besides, no guarantee that it would be stickied, so putting it inside a present sticky seemed best. Now if only I could get most people to read past the first post.

Quote:
 Originally posted by Gabb Er if the main poster is right then how come the An and Tech benchmark said 2 geforce 8s in Sli peaked out at 520 Wattage...I mean...that makes it seem like a 550 watts is not overkill at all, in fact not enough. http://www.anandtech.com/video/showdoc.aspx?i=2870&p=18
Saw that. And yeah, its almost guaranteed that the measurement is out of the wall. And I just made a post about why Wattage doesn't mean anything, and you still use it to justify your argument?

As for being overkill or not; I said that certain 550W PSUs like the Antec True Power Trio were only overkill for a single 8800GTX. It should be just enough for two 8800GTXs. Nvidia recommends 30A for a single 8800GTX, 42A for two should be just inside that recommendation.
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 02-06-2007, 05:30 PM #16 (permalink) Vinsanity     Join Date: Aug 2005 Location: West Coast Cali Posts: 1,234 Is this power supply pretty good for the price? I don't really know much about rails and volts and psu specs, but is this one pretty good for a sub \$30 PSU? I mean its 580watts lol. http://www.newegg.com/Product/Produc...82E16817709011 __________________ New build in progress, but this is what I got for now: -AMD x2 5200+ -Asus M3A78-EM AM2+ -Buffalo 2x1gb ddr2 800 -Hitachi 250gb Sata HDD -Antec Minuet Case w/ 350w psu -Windows 7 Home Premium 64 bit
02-06-2007, 10:11 PM   #17 (permalink)
Ultra Techie

Join Date: Jul 2006
Posts: 869

Quote:
 Originally posted by BiGyLiLuPdAmIdL Is this power supply pretty good for the price? I don't really know much about rails and volts and psu specs, but is this one pretty good for a sub \$30 PSU? I mean its 580watts lol. http://www.newegg.com/Product/Produc...82E16817709011
Either the meaning of this thread was completely lost on you, or you didn't read it. Read it again, specifically the "Why Watts Don't Mean Jack" section.
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 02-07-2007, 03:03 AM #18 (permalink) Monster Techie   Join Date: Feb 2005 Posts: 1,946 Yah, I was gonna say something...but I thought I'd let you do it...^ __________________ LIAN LI PC-7B PLUS II OCZ MODSTREAM 520W P4 3.2 2GB KINGSTON EVGA 6800GS PCI-E ASUS P5GD1 WD CAVIAR X2 LG DVD BURNER X2
02-07-2007, 10:31 AM   #19 (permalink)
Banned

Join Date: May 2005
Posts: 7,915

Quote:
 Originally posted by BiGyLiLuPdAmIdL Is this power supply pretty good for the price? I don't really know much about rails and volts and psu specs, but is this one pretty good for a sub \$30 PSU? I mean its 580watts lol. http://www.newegg.com/Product/Produc...82E16817709011

Read the reviews. They're saying that the PSU is actually only 210 watts.
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02-07-2007, 10:35 AM   #20 (permalink)
Do not Stare at my Avatar

Join Date: Aug 2005
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Posts: 9,578

Quote:
 Originally posted by BiGyLiLuPdAmIdL Is this power supply pretty good for the price? I don't really know much about rails and volts and psu specs, but is this one pretty good for a sub \$30 PSU? I mean its 580watts lol. http://www.newegg.com/Product/Produc...82E16817709011
No....
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