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SLI Crossfire help

 
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DamiPL
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PostPosted: Mon Jun 29, 2009 5:08 pm    Post subject: SLI Crossfire help Reply with quote

can anyone tell me the requirements for that? and whats the difference, SLI is for nvidia and Crossfire for ati gcards?
Also would 650W PSU be enough for 2 GTX 260?

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Pancake
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PostPosted: Mon Jun 29, 2009 5:44 pm    Post subject: Re: SLI Crossfire help Reply with quote

DAMIPL wrote:
can anyone tell me the requirements for that? and whats the difference, SLI is for nvidia and Crossfire for ati gcards?
Also would 650W PSU be enough for 2 GTX 260?


Yes, SLI is only for Nvidia cards while CROSSFIRE is for ati cards.
I'm not sure about the wattage, I have a corsair 650w and I have only one 260 GTX running.

According to http://extreme.outervision.com/psucalculatorlite.jsp
650w will be fine.

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Waly
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PostPosted: Mon Jun 29, 2009 7:45 pm    Post subject: Reply with quote

It depends if you have enough amps on the +12v rail(s).

If it's a Corsair, then yes, it would work. Some cheaper 650w PSU's wouldn't be able to support two of them.
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Ndure
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PostPosted: Mon Jun 29, 2009 8:28 pm    Post subject: Reply with quote

Overall wattage doesn't really say much. Like for example, you can have a PSU with a 800w total wattage with a rating of 40a on the 12v+ rail when a PSU with a total wattage of 600 has a 50a rating on the 12v+ rail. Get what I'm saying?
Anyways you're going to want around 41 - 46A on the 12v+ rail if I'm not mistaken.
Something like this: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139002&Tpk=620w%20corsair
Would be more than enough, however the 650w corsair would be better considering that 620w I linked has multiple 12v+ rails. It's typically better to have a single 12v+ rail.
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DamiPL
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PostPosted: Mon Jun 29, 2009 8:57 pm    Post subject: Reply with quote

i need more help w/ the requirements, i already picked this PSU.Just wanted to know if 650 was enough. Thx for the replies.
What else do i need?any reccomendations for good mobo?

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Waly
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PostPosted: Mon Jun 29, 2009 9:00 pm    Post subject: Reply with quote

AMD or Intel?
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Honda
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PostPosted: Mon Jun 29, 2009 9:06 pm    Post subject: Reply with quote

DAMIPL wrote:
i need more help w/ the requirements, i already picked this PSU.Just wanted to know if 650 was enough. Thx for the replies.
What else do i need?any reccomendations for good mobo?

Yes, it'll handle it.
For a mobo recommendation, get an Asus and what do you mean what else do you need?
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DamiPL
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PostPosted: Mon Jun 29, 2009 9:11 pm    Post subject: Reply with quote

Intel
and i mean like it requires certain parts for it to work properly.
ex. PSU, mobo thats sli ready. What other parts do i need? or thats the only 2?

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Ndure
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PostPosted: Mon Jun 29, 2009 11:17 pm    Post subject: Reply with quote

DAMIPL wrote:
Intel
and i mean like it requires certain parts for it to work properly.
ex. PSU, mobo thats sli ready. What other parts do i need? or thats the only 2?


Pretty much, well that and if your case can fit the 2 cards.
The GTX 260 is a pretty long card. Like for example, if you had an Antec 900 case, you would have to move one of the drive bays for it to fit.
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