Help with Power Supply needed please

[General_Badness]

My PC is a 509GE Desktop (3ghz P4, 1gb ddr ram, 200 gb sata hd, dual layer cd-rom/dvd-rw, 300w power supply).  I plan to purchase either a BFG Geforce 7800 GT or BFG Geforce 7800 GT OC card, both of which require a 350w power supply.  I have also read the specs on these GPUs and they say they require a rating of 26a at 12v.  What would an ideal power supply be to buy?  Do I need more than 350w total because of the specs on the GPU?  Perhaps a link or two if you're already looking?  Thanks to all for your help.

[Fed]

1) Quality... True Power by Antec.
2) Big is good, bigger is better. 400 Watt minimum, more if you can afford it.

Where did you get that 26 A @ 12 V from? (Link please)
It doesn't sound right.

[General_Badness]

Quick question about that power supply you listed and power supplies in general:  How do I check for compatibility and size?  Will that one fit in the 509ge or are the slots for power supplies fairly standard?  

Also:  This is the link I was looking at before I think.. It is listed for SLI though
http://www.bfgtech.com/7800GT_256_WC.html

[dl65]

 General Badness....... Whats the form factor of your mobo ...... ATX ?

dl65  

[dl65]

Where did you get that 26 A @ 12 V from? (Link please)
It doesn't sound right.

 ...... LOL you didnt check the link

Minimum System Requirements
 
>> Card with water block requires internal or external water cooled system, sold separately.  
>> Intel Pentium®III or IV, Celeron®, AMD® Duron™ Sempron™ or Athlon™ class processor or higher
>> 128MB of RAM
>> Microsoft Windows XP  
>> CD or DVD-ROM drive
>> 35MB available hard disk space
(50MB for full installation)
API Support Microsoft® DirectX®, OpenGL for Microsoft® Windows®
>> A minimum 400W system power supply (with 12V current rating of 26A or more)
>> A PCI Express compliant motherboard.  
>> A vacant PCI Express slot adjacent the PCI Express x16 slot. This board occupies two slots: The x16 graphics slot and the one next to it
>> Two available hard disk drive power dongles (smaller floppy disk drive connector is not sufficient)


dl65  

[Fed]

You may need to research this choice a little more.
I've seen a few different ratings for it.
A minimum 400W system power supply (with 12V current rating of 26A or more)
I've also see 120 Watts which equals 10 Amps.
I have a True Power 430 Watt which is more than the requirement but it's 12 Volt rail is only rated at 20 Amps. Go figure?

[Fed]

I bet I could crank over a small car engine with 12V 26A. LOL!

[General_Badness]

I'm not quite sure exactly... Currently looking online.  I can't seem to find what motherboard corresponds to the 509GE via searching the internet.  Is ATX not too standard?

[Fed]

As there are 2 cards, perhaps 13A each is not too far out of the game.
You will have to search out a very large, quality PSU to meet the Amps they require.
What games are you going to play?

[dl65]

 General Badness.....Why don't you cantact Gateway .......they should be able to tell you ........ It's their brand ....

dl65  

[General_Badness]

Yes I will definitely call Gateway and see about finding someone competent enough to answer a question or two    Also:  I checked the specs on an individual vid card I plan to buy and it says 12v current rating of 20a.  Been looking at prices on these and... ouch

[Fed]

Yes I will definitely call Gateway and see about finding someone competent enough to answer a question or two  

Good luck with it.

[GX1_Man]

LOL. Talk to the hand now.