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Windows 7: Help me choose.

26 Jul 2010   #11
fseal

Windows 7 x64 Ultimate
 
 

Actually that PSU would just barly cover it.

The 480 requires a minimum of 42 amps of 12v. So you would have to connect one of the 20A rails and one of the 25 A rails to each card.


My System SpecsSystem Spec
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26 Jul 2010   #12
hawkin90

Windows 7 Ultimate x64
 
 

Hmmm. Man this is annoying.
My System SpecsSystem Spec
26 Jul 2010   #13
hawkin90

Windows 7 Ultimate x64
 
 

Well. What if I choose a SLI 470 setup? Would that be any better for the PSU?
My System SpecsSystem Spec
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26 Jul 2010   #14
fseal

Windows 7 x64 Ultimate
 
 

470 card appears to be 38 amps each.
My System SpecsSystem Spec
26 Jul 2010   #15
hawkin90

Windows 7 Ultimate x64
 
 

Hard to choose. Will go for 470 or 480 SLI
My System SpecsSystem Spec
26 Jul 2010   #16
fseal

Windows 7 x64 Ultimate
 
 

Try checking around to see if anyone has done a compare of that vs 1 480.

My gut feel is that it would do really well on benchmarks, but for games it may vary. But I wouldn;t put money down till you saw some numbers first :)
My System SpecsSystem Spec
26 Jul 2010   #17
hawkin90

Windows 7 Ultimate x64
 
 

Keep in mind that I'm not building my system myself, and the company I'm buying from does testing of the gpu/cpu and everything before shipping it. So if my setup doesn't work or something is wrong they will contact me. They also say that the chieftec 1200w does great in SLI gaming and they haven't had any problems with any of their customers with my setup so far.
My System SpecsSystem Spec
26 Jul 2010   #18
bobkn

Windows 7 Pro X64 SP1
 
 

nVidia maintains a list of certified PSUs:

http://www.slizone.com/object/slizone_build_psu.html

The Chieftec isn't on it, but that probably means that nVidia hasn't tested it. It's probably OK.

Just to confuse things further, this one is certified for three GTX480s:

http://www.antec.com/Believe_it/product.php?id=MTc1Nw==

The non-OC edition is available in the US (www.newegg.com) for $260 + 6 S&H. Cheap for such a bruiser.
My System SpecsSystem Spec
26 Jul 2010   #19
hawkin90

Windows 7 Ultimate x64
 
 

Well, as you said, they probably haven't tested it, cause I'm 99% sure the chieftec works.
If not, they will probably offer me another PSU in the build that does.

But thanks for the links :)

EDIT: From the site: To run this powermonster we chose a chieftec 1200w PSU which has proven to be a great power supply, even for a 2x GTX 480 SLI Build.
My System SpecsSystem Spec
27 Jul 2010   #20
bobkn

Windows 7 Pro X64 SP1
 
 

Quote   Quote: Originally Posted by fseal View Post
Actually that PSU would just barly cover it.

The 480 requires a minimum of 42 amps of 12v. So you would have to connect one of the 20A rails and one of the 25 A rails to each card.
That's a system recommendation, not for just the card.

The GTX480 has one 8 pin PCI-E power connector (150W max, or 12.5A at 12V) and one 6 pin (75W, 6.25A at 12V). The total power use of the card must be less than 300W (25A), if it meets the total specs for the connectors plus the PCI-E slot (another 75W). Looks like the card actually uses over 280W when it's maxed out.

If the 480 uses 24A, the 18A left out of the 42A (above) would be marginal for an overclocked CPU, in my opinion.
My System SpecsSystem Spec
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 Help me choose.




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