How exact do video cards have to be for SLI

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The Canadian Prince

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Jul 8, 2013
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Hello, I just bought a gtx 660, and am thinking of getting a second one for SLI. I am having a hard time finding another one of the one I have now, so I was curious if they had to be exactly the same, or if one could be an evga superclocked 660, and the other a zotac gtx 660.

Hope that is detailed enough

 
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The key ingredient is the graphics chip involved. One GTX 660 will SLI with one from another manufacturer. You may not enjoy the benefits of the extra clock speed on the higher clocked card, but provided the actual graphics chip match, you should be fine.

Don't match Ti models with non- Ti models.
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bingaloman

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As long as it is a GTX 660 it should work, if one is faster than the other, the faster one will match the speeds of the slower one.

So yeah You can mix two different brands for example an EVGA with a MSI or any other brand as long as it is a GTX 660.
 
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bigpinkdragon286

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Oct 3, 2012
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The key ingredient is the graphics chip involved. One GTX 660 will SLI with one from another manufacturer. You may not enjoy the benefits of the extra clock speed on the higher clocked card, but provided the actual graphics chip match, you should be fine.

Don't match Ti models with non- Ti models.
 
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The Canadian Prince

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yes, i am aware that the ti is a different card. My concern was the fact that the one I have now is superclocked. However, after doing a little research on this, I don't think SLI is gonna be that big an advantage for me. If it helps here are my specs

i5 3350P
8GB 1600mhz Ram
1 TB Hard drive
Windows 8 Pro
430W PSU. Yes, I am aware this would need upgrading
gigabyte z77x-ud3h mobo

also, thanks for your quick reply.
 
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bigpinkdragon286

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A big advantage in what respect? It is a far cheaper alternative to purchasing a higher power single card solution, now that you've already a card you could use for SLI.

Personally, I think it boils down to personal preference.

The PSU will need upgrading, whether you go with SLI or a single card setup.
 
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The Canadian Prince

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Me and my friends just finished a 48 hour weekend marathon of swtor. No issues so far, the highest the temp gets is around 60 degrees Celsius. Though I have replacement parts, just in case the psu decides to burn out. I don't plan on this happening, as this rig was based on a custom rig done by a family member who had it running with no issues for a little over a year. Right now, I am getting around 60 fps on all the games I play, so I won't add a second card until it's time to upgrade. If anything, the next thing I get will be an i7 CPU, and a new power supply.
 
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bigpinkdragon286

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Well, sounds like your rig is doing alright to me. There's little point in averaging over 60 FPS if your monitor doesn't support it. Going with SLI in such a case would let you turn up some graphical settings and help prevent dips below 60, which would be ideal for keeping VSYNC where you want it. :)
 
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The Canadian Prince

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everything is maxed, and it is a 120hz monitor. So I'm just gonna leave it alone.
 
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