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SLI adding 16ms latency?

Posted on 2016-08-10
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Last Modified: 2016-09-01
I'm looking to play multiplayer games with the least amount of input lag possible. I even made sure the TV I recently purchased had an input lag under 20ms. I understand that two video cards in SLI, will take an additional frame to render. Am I to understand that this will add 16ms of lag to my games, nearly doubling my overall input lag?
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Question by:Mark Di Padova
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Expert Comment

by:Aaron Tomosky
ID: 41752607
This is one of the easier to read articles explaining how it all works
http://www.tomshardware.com/reviews/nvidia-sli-faq,4079.html

The short version is if you can get acceptable performance out of a single card, USE ONE CARD. If you tell us what game at what res and other settings we can try to give more exact advice on which cards will work.
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Author Comment

by:Mark Di Padova
ID: 41754583
I haven't finished building my PC yet, but my goal is to run new AAA games in 4k with the highest settings possible. I'm trying to decide between a Titan x, and 2 GTX 1080s in SLI. I play a lot of first person shooters. Doom will probably be my first purchase.
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Assisted Solution

by:Aaron Tomosky
Aaron Tomosky earned 2000 total points
ID: 41754588
Go with one Titan X. Less power, no need for Sli support in games.
https://m.reddit.com/r/nvidia/comments/4u5h3k/gtx_1080_sli_vs_gtx_titan_x_pascal_input_and/
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Author Comment

by:Mark Di Padova
ID: 41778915
I appreciate the  response, but this doesn't fully answer my question. I asked: "Am I to understand that this will add 16ms of lag to my games, nearly doubling my overall input lag?". Maybe, the article that is linked gives the answer, but I must be missing it.
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Accepted Solution

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Aaron Tomosky earned 2000 total points
ID: 41778962
SLI adds a buffer frame, so it depends on the current frame rate to know exactly how many ms lag that will generate. So the answer is "it depends on the current frame rate".
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