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Not full speed on gpu memory during Iray rendering.

mats76mats76 Posts: 294
edited January 2018 in Technical Help (nuts n bolts)

I noticed in gpu-z that when I do a render in Daz3d (Iray) that the gpu memory clock on my 1080ti is only running at 1251mhz (1251mhz=10000mhz) instead of running at the usual 1376 (1376mhz=11000mhz) during gpu load. During games for example it does run at 1376mhz (1376mhz=11000mhz). 

Edit: Just starting daz3d seems to lock the memory at a lower speed. Tried with a game running with memory working at full speed and when opening daz3d in the backround the memory clocked down right away, When closing daz3d and the game still running the memory started to work at full speed again.  

Post edited by mats76 on

Comments

  • fastbike1fastbike1 Posts: 4,078

    That’s usually an indicator that either your MB can’t provide enough voltage to the card or that the card is being slowed down to start below the design temperatur limit..

  • mats76mats76 Posts: 294
    edited January 2018
    fastbike1 said:

    That’s usually an indicator that either your MB can’t provide enough voltage to the card or that the card is being slowed down to start below the design temperatur limit..

    Thank you for your suggestion.

    Not sure if the MB can provide enough voltage ( asrock z77 extreme6) but should not that been causing issues in heavy gpu games aswell? Could it be using all cuda cores draws more power then playing games? 

    It does not seems to bee a temp issue since ithe memory runs at 1251mhz right from the start when beginning a render..

    Edit: Just starting daz3d seems to lock the memory at a lower speed. Tried with a game running with memory working at full speed and when opening daz3d in the backround the memory clocked down right away, When closing daz3d and the game still running the memory started to work at full speed again.   

    Post edited by mats76 on
  • mats76mats76 Posts: 294

    I have not beem able to solve this yet. games and blender all runs the gpu memory att full speed but Daz does not.

    Anyone else with a 1080ti that could check what gpu memory speed they get in gpu-Z when using Daz?

    I get 1251mhz (10000mhz) should be 1376mhz (11000mhz).

    Many thanks in advance

  • VEGAVEGA Posts: 86

    I have a same problem with gtx 1080 . In games it runs at full speed but during Iray render slows down same as your 1080ti. Don't know if it's 10xx series problem or general.

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