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Author Topic: MadVR - Why does SLI make it worse?  (Read 3210 times)

newguy1

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MadVR - Why does SLI make it worse?
« on: January 27, 2015, 12:04:49 pm »
Hi All,

I've recently got an SLI configuration going.  I noticed that MadVR got WORSE when they are configured together.  To be clear: I get better framerates with a single card.

Why?
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Hendrik

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Re: MadVR - Why does SLI make it worse?
« Reply #1 on: January 27, 2015, 12:13:54 pm »
SLI doesn't benefit video rendering, and on top of that SLI has a certain overhead, which can make single-GPU applications actually slower, which is what you're seeing.
I believe you can turn SLI on and off on a per-application basis, so I recommend to turn it off for Media Center.
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newguy1

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Re: MadVR - Why does SLI make it worse?
« Reply #2 on: January 27, 2015, 01:24:31 pm »
Will try to figure out the by application thing.


My card is not maxed out by memory, just the GPU. I find it hard to believe that video rendering doesn't benefit from SLI...can't it do a frame by frame swap between cards?

Is this just MadVR coding?
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newguy1

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Re: MadVR - Why does SLI make it worse?
« Reply #3 on: January 29, 2015, 02:21:13 pm »
Any ideas?  Is there an SLI setting that I can change?

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