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Which card to SLI & will it bottleneck?

Last response: in Graphics & Displays
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November 21, 2012 5:11:06 AM

I'm trying to decide whether to SLI a GTX 460, a GTX 550Ti, or a GTX 560Ti. My specs :
Intel Core i7 2600K 3.4GHz
ASUS P8Z68-V gen 3
16GB DDR3 Memory @ 1666MHz
NVidia GTX 550Ti
Antec HCG-750

Also, will my CPU bottleneck if I SLI any of the cards?
Please keep in mind that I'm trying to be as light on the wallet as possible.
Any other card suggestions are welcome.

More about : card sli bottleneck

a c 125 U Graphics card
November 21, 2012 5:22:58 AM

If you already have a 550Ti, then that's what would make sense to SLI with it.

Though if you are willing to SLI two 560Ti's (~$400 worth of card), you should just get a HD7970 or GTX670 outright.

The 2600K is strong enough to hold any card config.
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November 21, 2012 5:27:42 AM

How much of a performance boost would I get if I SLI'd a 550Ti and a 560Ti? Or would it be insignificant?
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a c 125 U Graphics card
November 21, 2012 5:57:26 AM

You cant, you can only SLI two cards of the same GPU. You can pair two 550Ti's, or two 560Ti's. Cant mix the models.
This should explain a bit.
http://www.youtube.com/watch?v=XS5rBS8n-LM

EDIT: Dont be concerned about your PSU after watching the video, its a bit old and back then components did draw a lot more power than modern components. Your 750W will be plenty for a dual card rig.
Another thing he doesnt mention is the amount of VRAM you have in an SLI/Crossfire array. If you have two 1GB cards in SLI/Crossfire, you only still have an effective 1GB of VRAM. Both cards have to store the textures, the VRAM isnt shared among them. And if you have a 2GB and a 1GB card, it will default to the lowest amount, so you will only have an effective 1GB still.
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