What number should I pay attention to on my power supply?

Shadoninja · 06-20-2009, 03:31 PM

I have 3 numbers on my power supply:

One says just that it is a 400W power suppy

Another says (+3.3V & +5V=150W Max)

And the last says (+3.3V & +5V & +12V1&+12V2=385W Max)

I calculated the recommended PSU wattage for my new rig to be 153w.

Is that 3 more than my power supply can support or am I fine?

makinu1der2 · 06-20-2009, 04:14 PM

Hello,

List the specs for your system (MB,RAM,CPU,etc)

List the make/model of the PSU.

**wrench97** · 06-20-2009, 04:18 PM

I think your numbers are off somewhere or your building a laptop.

Shadoninja · 06-20-2009, 08:18 PM

Those numbers came verbatim directly off of sticker that is on the power supply in my computer

The new rig I am getting soon is

AM3 3.0gz dual core
Two 2g sticks of DDR2 Ram
Geforce 9500 GT
Hitachi 1 TB HD
Asus mobo that supports everything I am getting (don't remember the name)

**simpswr** · 06-20-2009, 08:34 PM

See this for help with Power Supply Selection Power Supply Information and Selection

dai · 06-20-2009, 08:42 PM

then you need to be up here

http://www.newegg.com/Product/Produc...air%2b550w

dai · 06-20-2009, 08:42 PM

then you need to be up here

http://www.newegg.com/Product/Produc...corsair%2b550w

Shadoninja · 06-20-2009, 08:46 PM

Quote:

Originally Posted by dai

then you need to be up here

http://www.newegg.com/Product/Produc...corsair%2b550w

Yeah but I did a calculator and it had every part in my new rig on the lists and it calculated it to 153. Why would I need a better power supply than my 400 wat?

dai · 06-20-2009, 08:56 PM

i don't know how you calculated it to 153w

for a pcie system the one i gave is the min to be at
you need a min of 26a available on the the 12v+ line for use
which means the label needs to show a min of 38amps on the 12v line
your not going to find that on a 400w

06-20-2009, 03:31 PM	#1 (permalink)
Shadoninja Registered User Join Date: Aug 2008 Posts: 23 OS: xp	What number should I pay attention to on my power supply? I have 3 numbers on my power supply: One says just that it is a 400W power suppy Another says (+3.3V & +5V=150W Max) And the last says (+3.3V & +5V & +12V1&+12V2=385W Max) I calculated the recommended PSU wattage for my new rig to be 153w. Is that 3 more than my power supply can support or am I fine?

06-20-2009, 04:14 PM	#2 (permalink)
makinu1der2 Tech Hardware Team Join Date: Jan 2008 Location: Florida Posts: 2,015 OS: Vista Home Premium SP1,Win XP SP3,Ubuntu 9.04,Sabayon 4,Windows 7 RC1 x64 My System	Re: What number should I pay attention to on my power supply? Hello, List the specs for your system (MB,RAM,CPU,etc) List the make/model of the PSU. __________________ "The dumbest people I know are those who know it all."

06-20-2009, 04:18 PM	#3 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Location: S.E. Pennsylvania Posts: 18,435 OS: Win7	Re: What number should I pay attention to on my power supply? I think your numbers are off somewhere or your building a laptop. __________________ Power Supply and Selection

06-20-2009, 08:18 PM	#4 (permalink)
Shadoninja Registered User Join Date: Aug 2008 Posts: 23 OS: xp	Re: What number should I pay attention to on my power supply? Those numbers came verbatim directly off of sticker that is on the power supply in my computer The new rig I am getting soon is AM3 3.0gz dual core Two 2g sticks of DDR2 Ram Geforce 9500 GT Hitachi 1 TB HD Asus mobo that supports everything I am getting (don't remember the name)

06-20-2009, 08:34 PM	#5 (permalink)
simpswr Moderator Hardware Team Join Date: May 2007 Location: Houston, Texas Posts: 12,202 OS: XP, Vista, Win 7	Re: What number should I pay attention to on my power supply? See this for help with Power Supply Selection Power Supply Information and Selection __________________ Rich MemTest86 \| BenchTest \| Virus/Trojan/Spyware Help How to post a Screen Shot \| PC running slow?

06-20-2009, 08:42 PM	#6 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 56,539 OS: win 7 32x 64x rtm	Re: What number should I pay attention to on my power supply? then you need to be up here http://www.newegg.com/Product/Produc...air%2b550w __________________

06-20-2009, 08:42 PM	#7 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 56,539 OS: win 7 32x 64x rtm	Re: What number should I pay attention to on my power supply? then you need to be up here http://www.newegg.com/Product/Produc...corsair%2b550w __________________

06-20-2009, 08:56 PM	#9 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 56,539 OS: win 7 32x 64x rtm	Re: What number should I pay attention to on my power supply? i don't know how you calculated it to 153w for a pcie system the one i gave is the min to be at you need a min of 26a available on the the 12v+ line for use which means the label needs to show a min of 38amps on the 12v line your not going to find that on a 400w __________________