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Will these work for SLI?

Last response: in Graphics & Displays
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May 11, 2012 6:39:18 PM

I own these four and i am wondering if any combination will work for SLI. all are 1gb and the last two are made by EVGA.

CARDS: galaxy 560 gtx, asus 460 gtx, 550 ti, 430 gt.

I was planning on using the 460 for phys x and the 560 for graphics but then read the SLI thread on here and realized it probably wasn't possible.

Any answers or comments would be appreciated.

More about : work sli

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a b U Graphics card
May 11, 2012 6:41:42 PM

Unfortunately for SLI the cards need to be the same. Manufacturer can differ, but model must be the same.

It is suggested that manufacturer match as well.
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a c 153 U Graphics card
May 11, 2012 6:41:51 PM

None will.
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a b U Graphics card
May 11, 2012 6:45:40 PM

Even it you have the same card and manufacturer and the ammount of VRAM is different it will not work. For example, a gtx 460 768MB will not work sli'd with a gtx 460 1GB
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a b U Graphics card
May 11, 2012 7:07:51 PM

alrobichaud said:
Even it you have the same card and manufacturer and the ammount of VRAM is different it will not work. For example, a gtx 460 768MB will not work sli'd with a gtx 460 1GB


They will, but both cards will use the smaller memory amount.
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a c 153 U Graphics card
May 11, 2012 7:11:22 PM

auntarie said:
They will, but both cards will use the smaller memory amount.


Sometimes, its not guaranteed actually. There are a lot of factors that determine if different memory amounts are SLIable.
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a c 272 U Graphics card
May 11, 2012 7:12:50 PM

auntarie said:
They will, but both cards will use the smaller memory amount.

No they won't because the memory bandwidths are different, 192 bit Vs 256 bit.
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a b U Graphics card
May 11, 2012 7:17:08 PM

Mousemonkey said:
No they won't because the memory bandwidths are different, 192 bit Vs 256 bit.


See that's a good reason I missed :D 
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a b U Graphics card
May 11, 2012 7:22:06 PM

you can't sli them they are completely differ from each other you need identical models to work in sli if the brand is differ then no matter it will work but models must be same for example
brand=> (asus) model=> (gtx 560ti) 1gb +brand=> (msi) model=>(gtx 560ti) 1gb = SLI but if
asus gtx 560ti + asus gtx 570 = no SLI.

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a b U Graphics card
May 11, 2012 7:31:40 PM

Yes, I didn't realise at the time that we are talking about different bandwidths. Sorry about that.
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May 11, 2012 7:34:34 PM

Ah i see, great info guys!
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a b U Graphics card
May 12, 2012 11:23:19 AM

auntarie said:
Yes, I didn't realise at the time that we are talking about different bandwidths. Sorry about that.



Have a quick read of the sli setup FAQ on the Nvidia website. It doesn't say anything about memory bandwidth, though I am sure that is the reason why, but it does state that the amount of VRAM on each gpu in an sli setup must be the same.
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a c 272 U Graphics card
May 12, 2012 11:36:59 AM

alrobichaud said:
Have a quick read of the sli setup FAQ on the Nvidia website. It doesn't say anything about memory bandwidth, though I am sure that is the reason why, but it does state that the amount of VRAM on each gpu in an sli setup must be the same.

Like many FAQ's that one does not get updated frequently enough and it is also very generalized as it doesn't mention the cards with different RAM amounts that can be SLi'd.
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a b U Graphics card
May 12, 2012 1:46:19 PM

I can honestly say that I have no idea which ones can. I just assumed that none could based on the info provided by Nvidia.
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a c 272 U Graphics card
May 12, 2012 1:57:19 PM

alrobichaud said:
I can honestly say that I have no idea which ones can. I just assumed that none could based on the info provided by Nvidia.

Nvidia have possibly just tried to simplify it over the years and it was more the older pre 2xx series cards that were released with the same cards having different amounts of RAM, but it seems as though we may be returning to those days.
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May 22, 2012 1:07:06 PM

Best answer selected by adambeau.
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a c 272 U Graphics card
May 22, 2012 4:58:04 PM

This topic has been closed by Mousemonkey
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a c 272 U Graphics card
May 22, 2012 4:58:47 PM

Best answer selected by Mousemonkey.
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