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Selecting A Power Supply


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6 replies to this topic

#1 DJBPace07

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Posted 02 May 2008 - 01:29 AM

I'm getting ready to get a new computer, I already have the parts list ready. My confusion lies with the power supply. I'm alternating between getting a 750 watt and a 1000 watt. I don't want to spend the extra money on the 1000 watt if I can avoid it. Here is my parts list. Which PSU do you suggest?

NVIDIA nForce 780i SLI
Intel Core 2 Quad Q9450 <<<Watercooled and overclocked
8GB of Kingston memory
3 500 GB SATA II Hard drives
1 DVD/CD Combo drive
2 GeForce 9800GTX in SLI
Xonar D2X PCI Express soundcard
D-Link 802.11G PCI card

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#2 garmanma

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Posted 02 May 2008 - 08:06 AM

Nice guide
http://www.10stripe.com/
Power supply calculator
Mark
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#3 Lucky23

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Posted 02 May 2008 - 12:13 PM

I would think a good 650-750 would work fine. I would just make sure its 80+ certified and has plenty of Amps on the 12v Rails. I personally have the cooler master 650 pro and its a really good ps
Centurion 5 Case~GA-P35-DS3L Rev2.0~E6550~EVGA 8800GS~3GB GSkill~Cooler Master 650 PRO~Seagate 320GB SATA II~ 2 ASUS 20X Burners~Sound Blaster Audigy SE~ZeroTherm CF900~Acer 22" P221W

#4 DJBPace07

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Posted 02 May 2008 - 03:45 PM

Both the 750 and 1000 watt power supplies are Silverstone Strider models. The Newegg PSU calculator is a little out of date, just check the graphics cards. I ask which I need because I get conflicting information, one PSU calculator says my power draw would be about 500 watts, the Newegg one says over 900.

Edited by DJBPace07, 02 May 2008 - 03:45 PM.

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#5 garmanma

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Posted 02 May 2008 - 05:55 PM

Here's another one to look at http://web.aanet.com.au/ Seems up to date
Keep in mind that they are all estimates
Mark
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#6 DJBPace07

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Posted 02 May 2008 - 06:35 PM

Here's another one to look at http://web.aanet.com.au/ Seems up to date
Keep in mind that they are all estimates


That too is out of date, the Q9450 CPU isn't available nor is 9800 series of graphics. I guess this is the price we pay for the latest. I'm finding all the suggestions and comments very informative. Keep them coming! :thumbsup:

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#7 Sterling14

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Posted 02 May 2008 - 07:40 PM

According to Toms Hardware, a 9800GTX under full load uses 265 watts. http://www.tomshardware.com/reviews/nvidia...ew,1800-12.html So if you have two thats 530 Watts With three hard drives and a quad core cpu water cooled and overclocked, you might need a bit more then 750 watts. I'm not positive though.
"I think there is a world market for maybe five computers." - Thomas Watson, Chairman of IBM, 1943




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