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Does my new build require a larger power supply?

post #1 of 10
Thread Starter 
My thought in reference to the title is sadly, yes.

I just ordered a whole bunch of new parts so I'll be doing a new build.

Case: NZXT Phantom (black)
CPU: Overclocked Xeon W3520
HDD: 1 TB 7200rpm Caviar Black, 1 7200rpm SE-16
Graphics Cards: 2x overclocked GTX470's, 1 overclocked GT 240 512mb (physx/folding)
Motherboard: Asrock Extreme X58
Fans: 5x120mm, 1x140mm, 2x200mm

The power supply I'd like to use is a Corsair GS 800. I used the PSU calculator from Extreme Outervision and they recommend a minimum of about 825watts. Does that seem about right?

I just bought this power supply so I'd like to be able to keep it, but if I can't oh well. If I do need a new PSU I was looking at this one. It's only $120 from my vendor.
http://www.frozencpu.com/products/75...-OP1000-E.html
    
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post #2 of 10
You should be good with your GS 800 but I would recommend the HX850 over that since the extreme calculator always gives an excess amount in terms of wattage to be safe when giving out recommended volts.

Also why use a GT240 for Physx when the SLI kills everything as it is. If I remember correct;y a 480 with a card for Physx was tested as not worth it. With you're setup it equals or is better than the 480 so no need for the 240. With that in mind the GS 800 should be way good for your setup!
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post #3 of 10
Thread Starter 
Quote:
Originally Posted by mark_thaddeus View Post
You should be good with your GS 800 but I would recommend the HX850 over that since the extreme calculator always gives an excess amount in terms of wattage to be safe when giving out recommended volts.

Also why use a GT240 for Physx when the SLI kills everything as it is. If I remember correct;y a 480 with a card for Physx was tested as not worth it. With you're setup it equals or is better than the 480 so no need for the 240. With that in mind the GS 800 should be way good for your setup!
The GT 240 will still be folding so it's important to me that my power supply can handle it. I may or may not use it for Physx. I just bought Metro 2033 but as far as I can tell there's only a 2-3 fps difference.
    
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post #4 of 10
Dont bother using those calculators. I'm not sure how good of a powersupply that is because I'm not familiar with that series within Corsair. Assuming the quality is similar to that of the other Corsair series you will have absolutely no problem with it at all. Fold as much as you can at as high of clocks as you can.
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post #5 of 10
Id say a nice 750w PSU would be perfect, maybe the XFX 750, MAYBE a 650w but that would be a stretch.
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post #6 of 10
Quote:
Originally Posted by Smoblikat View Post
Id say a nice 750w PSU would be perfect, maybe the XFX 750, MAYBE a 650w but that would be a stretch.
I would not recommend a 650 watt for two 570s and another card folding. A 750 Watt would be ideal. I've asked Phaedrus and a few other people and they recommended me against getting a second 470 on my 650tx.
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post #7 of 10
Quote:
Originally Posted by VW_TDI_02 View Post
I would not recommend a 650 watt for two 570s and another card folding. A 750 Watt would be ideal. I've asked Phaedrus and a few other people and they recommended me against getting a second 470 on my 650tx.
Ya i said it would be a bit of a stretch if it would work at all, but the XFX 750 is the best bet right now TX750 is overpriced for what it actaully does, which is to say look nice and thats about it.
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post #8 of 10
Thread Starter 
Assuming that each GTX 470 uses about 225 watts and the GT 240 using up 100 watts pus me at 550 watts. The CPU will probably use around 225 watts.
I see myself at 775 watts with everything having a moderate overclock. lol

Perhaps I should just upgrade for the better efficiency. =]
    
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post #9 of 10
Quote:
Originally Posted by Jaguarbamf View Post
Assuming that each GTX 470 uses about 225 watts and the GT 240 using up 100 watts pus me at 550 watts. The CPU will probably use around 225 watts.
I see myself at 775 watts with everything having a moderate overclock. lol

Perhaps I should just upgrade for the better efficiency. =]
You aren't going to hit anywhere near that much...
http://www.hardwarecanucks.com/forum...review-17.html
541w load for the system with SLI 470s.
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post #10 of 10
750w would be ample.
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