INTERACT FORUM

Please login or register.

Login with username, password and session length
Advanced search  
Pages: [1]   Go Down

Author Topic: MadVR - Why does SLI make it worse?  (Read 3314 times)

newguy1

  • Recent member
  • *
  • Posts: 47
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?
Logged

Hendrik

  • Administrator
  • Citizen of the Universe
  • *****
  • Posts: 11081
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.
Logged
~ nevcairiel
~ Author of LAV Filters

newguy1

  • Recent member
  • *
  • Posts: 47
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?
Logged

newguy1

  • Recent member
  • *
  • Posts: 47
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?

Logged
Pages: [1]   Go Up
« previous next »