SLI vs single: How do you know?

General question for SLI'ing. How do you know if your best bet is to SLI or simply buy a higher performing card? Is there a chart? I know adding a second card doesn't double performance so how do you know how much more improvement you will get?

In reference, I have Galaxy 460 GTX 1GB GC. I have it running in PCI express X 16. The motherboard is an MSI Z68A-GD80 so if I SLI the card, I will drop to x8/x8 lanes. So, in general, if I wanted to up my performance across the board and see improved FPS on max settings on a variety of games, what are my best options? SLI or buying a higher performing card? How will I know how much improvement I will get from SLI?

Thank you all.
3 answers Last reply
More about single know
  1. Adding a second GeForce GTX 460 will gain you a 53% relative performance increase over a single GeForce GTX 460 card.
  2. Thank you! How can I look that info up to know that?
  3. milamdj said:
    Thank you! How can I look that info up to know that?

    Read techPowerUp.com's NVIDIA GeForce GTX 460 SLI review here:

    http://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_460_SLI/
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