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How Much Power?

Last response: in Graphics & Displays
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March 25, 2011 7:12:19 PM

How much power would the GTX 550 Ti in Triple SLi formation need? I currently have an 850 Watt Modular PSU from Ultra. I am also running (3) 7200 RPM HDD, no CD/DVD drives, (3) 230mm Cooler Master fans, (1) 140mm Cooler Master fan, (1) 120mm fan, and (1) WMP300N PCI wireless card.

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a c 86 Î Nvidia
March 25, 2011 8:01:10 PM

How do you do Triple SLI with GeForce GTX 550 Ti graphics cards that only support 2-way SLI?

The only GeForce 500 Series models that support 3-way SLI are the GeForce GTX 570 and the GeForce GTX 580.

What Series and model number is the Ultra 850 Watt PSU? Ultra Products doesn't just make one model of 850 Watt PSUs. The maximum +12V load is different for each model.

Do you have the X3 Series ULT40312 or the X4 Series ULT40503?

Either model is more than sufficient to handle two GeForce GTX 550 Ti in 2-way SLI mode in your system.

How many display panels and what resolution are you using?
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a c 388 Î Nvidia
March 25, 2011 8:08:02 PM

You can only do GTX 550 in SLI with a third one as a dedicated PhysX card. Three way SLI is not possible. 850 watts is plenty for that system.
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March 25, 2011 8:39:24 PM

Oh, see I did not know that the 550 could not do triple SLi. Is there a 400 series card that can do triple sli?
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a c 388 Î Nvidia
March 25, 2011 8:57:10 PM

Abedis said:
Oh, see I did not know that the 550 could not do triple SLi. Is there a 400 series card that can do triple sli?

GTX 470, 480, 570, 580 only.
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a c 86 Î Nvidia
March 25, 2011 9:02:50 PM

17seconds said:
GTX 470, 480, 570, 580 only.

You missed the GeForce GTX 465.
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a c 86 Î Nvidia
March 25, 2011 9:09:02 PM

Abedis said:
Oh, see I did not know that the 550 could not do triple SLi. Is there a 400 series card that can do triple sli?

Your power supply wouldn't be able to power any of the GeForce 400 Series models that support 3-way SLI in 3-way SLI mode.
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March 25, 2011 10:15:24 PM

@ko888 I have the X4 850W modular if that makes any difference, probably not though.

Basically, I want to be able to run any new game with amazing settings, although the only games I really play are StarCraft 2, WoW, and Shogun 2 and my system is good, but I want it to be better. For example, I can play StarCraft 2 on High, WoW on Ultra and Shogun 2 on Very High. But, I want more oomph, I want to be able to max out all settings and still get good frame rates (at least 60fps in intensive moments). Now, my current motherboard is the MSi X48C Platinum, has CrossFire, but in the past I've had terrible experience with ATi cards, constant crashing or freezing of images, and that's why I have a GTX 260 Core 216 in it. But, if those issues don't really exist anymore, then I will definitely switch so I can maximize the potential of my motherboard.
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a c 86 Î Nvidia
March 25, 2011 10:32:54 PM

Abedis said:
@ko888 I have the X4 850W modular if that makes any difference, probably not though.

Basically, I want to be able to run any new game with amazing settings, although the only games I really play are StarCraft 2, WoW, and Shogun 2 and my system is good, but I want it to be better. For example, I can play StarCraft 2 on High, WoW on Ultra and Shogun 2 on Very High. But, I want more oomph, I want to be able to max out all settings and still get good frame rates (at least 60fps in intensive moments). Now, my current motherboard is the MSi X48C Platinum, has CrossFire, but in the past I've had terrible experience with ATi cards, constant crashing or freezing of images, and that's why I have a GTX 260 Core 216 in it. But, if those issues don't really exist anymore, then I will definitely switch so I can maximize the potential of my motherboard.

The X4 only provides 5 Amps more than the X3 on the +12 Volt rail so it's still not enough for 3-way SLI.

Were you also planning on a CPU, motherboard and RAM upgrade? You would have to if you were thinking of SLI.
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a b Î Nvidia
March 26, 2011 12:53:16 AM

why on earth would you want to do tripple sli with such low end cards? what happens when you play a game that does not support sli, or runs poorly with sli. you would have to be pretty silly to do that....... far better off to do 2 way sli with better cards or even smarter would be to buy a faster single card.
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March 26, 2011 5:32:16 AM

@Ko888 Yes, I was thinking of upgrading my motherboard CPU and ram. I found a decent bundle on TigerDirect (http://www.tigerdirect.com/applications/searchtools/ite...) it's an Intel BOXDX58SO2 that comes with the 1366 i7 960. And with it I was considering either Patriot RAM (one of my favorites) G. Skill or Corsair.
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