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Speed boost with Nvidia driver update on older cards?

PetercatPetercat Posts: 2,321
in Technical Help (nuts n bolts)

I haven't purchased a 10XX card yet, but I did update the driver to the latest Nvidia release, and I am noticing a decent speed boost with my 980ti. Sadly, I did not do a comparison render before updating.
I do know that I had one scene that overran my VRAM, and took forever to render. I just rendered it with the new driver, and it stayed in the VRAM this time, 5.6G, and rendered 2189 iterations in 11 minutes. (Monitor is using onboard graphics.)
I usually stop rendering at 2000 iterations or so, and comparing renders with the new driver to old renders, the new ones look better as well.
I would guess that with the new Nvidia driver, 1500 iterations look about the same as 2000 with the old driver.
Has anyone else noticed this, or could someone who hasn't updated their driver yet do a comparison test?

Comments

  • prixatprixat Posts: 1,588

    I can't remember where I read it, but the newer version of Iray is able to reach convergence with fewer iterations.
    It does that by spending less time calculating already converged areas.
    Which means the number of iterations are not directly comparable between different versions of Iray.

  • nicsttnicstt Posts: 11,715

    I'm seeing about a 5% increased since the new beta of 4.9; meaning the support for 10 series cards versions.

    I use a 980ti and i've tried it a few times. I downgraded and tested then upgraded again.

  • Kevin SandersonKevin Sanderson Posts: 1,643
    edited November 2016

    One of the PAs (The Philosopher) told me that the newer drivers this year have better use of memory. He's able to get more in a scene now on an older card compared to what he could do with the older drivers. I haven't tried it yet, but I believe him. He also downloads and manually installs the driver.

    Post edited by Kevin Sanderson on
  • PetercatPetercat Posts: 2,321
    Kevin Sanderson said:

    One of the PAs (The Philosopher) told me that the newer drivers this year have better use of memory. He's able to get more in a scene now on an older card compared to what he could do with the older drivers. I haven't tried it yet, but I believe him. He also downloads and manually installs the driver.

    I did the same. I would love to see a comparison of test renders between 980ti old driver, new driver and 1070 on both 4.9 and 4.9beta. Let it all hang out!

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