GTX 970 VRAM allocation bug

Discussion in 'Videocards - NVIDIA GeForce' started by Milan, Jan 7, 2015.

Thread Status:
Not open for further replies.
  1. doktor

    doktor Guest

    Messages:
    16
    Likes Received:
    0
    GPU:
    GIGABYTE GTX970 G1

    Thats what i thought what the procedure is... But then the Commit amount in TM should reduce after time shouldn't it? I understand that a normal application loads primary in RAM/Pagefile and that this counts as commited Memory as long as the application is loaded.
    when data get transfered to VRAM trough system RAM, the commited size rises since system ram gets used. But after the transfer the system ram should be usable again or not?


    Edit:

    With the 2GB memory test Kombustor uses 800MB of Physical Memory (WSPrivate Value)). And the Commited GPU Memory is the same size as Dedicated GPU Memory. So all data stored at gpu VRAM.

    With the 3GB memory Test Kombuster uses 2,5GB of Physical Memory.
    It comits 3,9 GB on the GPU. The GPU only dedicates 3,3GB to its VRAM. The missing MB gets loaded / streamed from system ram when needed...
    http://imgur.com/qaYuRf3,pSckQZZ
    http://imgur.com/qaYuRf3,pSckQZZ

    toncij vramtest tool coomits 1,3GB and dedicates 3,7GB on GPU. But no physical memory gets used by it.
     
    Last edited: Jan 17, 2015
  2. wtbarms

    wtbarms Member Guru

    Messages:
    105
    Likes Received:
    4
    GPU:
    3080 fe
    @This Thread... sorry if posting the Excel file on previous page is frowned on and made it look like I was some other member. Just got nervous that trading in a 6GB 780 for two 970s had been a mistake and wanted validation one way or the other.

    Anyways. Go back to your bickering. :p
     
  3. kroove

    kroove Guest

    Messages:
    2
    Likes Received:
    0
    GPU:
    MSI GTX 970 Gaming
    Here are 2 videos of gtx 980 systems both with 8gb system ram allocating all 4gb of vram at 720p and beyond in Shadow of Mordor. It takes 4k for me to hit 4gb vram at the same settings.

    youtube.com/watch?v=Y8GNMQxg0gs

    youtube.com/watch?v=eOZUJATDt9Q
     
  4. Pill Monster

    Pill Monster Banned

    Messages:
    25,211
    Likes Received:
    9
    GPU:
    7950 Vapor-X 1100/1500
    Seems to be using 3.2GB for WS and the other 800MB is most likely swap buffer I would think. Looks good imo....

    All 4GB of onboard memory can be committed. Case closed.


    Well already know all 4GB can be filled so it's app specific. Doesn't seem to be any problem tbh....


    Don't worry about the PF errors, completely normal. You'll get them even with no PF present.
     
    Last edited: Jan 17, 2015

  5. Vidik

    Vidik Master Guru

    Messages:
    619
    Likes Received:
    220
    GPU:
    MSI 1070 Gaming Z
    Here, googled some Youtube videos (obviously not mine)

    970 benchmark
    https://www.youtube.com/watch?v=B9-mcWGP-jU
    970 gameplay
    https://www.youtube.com/watch?v=MgRus2W7aN4

    980 benchmark
    https://www.youtube.com/watch?v=HSp9NXx4C_8
    980 gameplay
    https://www.youtube.com/watch?v=cf5faUdRVqk



    He runs FC4 in 4K 4xTXAA and even that can't make 970 use all VRAM? No to mention obvious mediocre performance (which is to be expected at that resolution)
    But we were talking about 1080p were though so what's this about?
     
  6. doktor

    doktor Guest

    Messages:
    16
    Likes Received:
    0
    GPU:
    GIGABYTE GTX970 G1
    Commited memory is not the same as used physical memory.

    to me it looks like Afterburner and GPU-Z do not report the dedicated used Memory. The report some sort of REALLY USED memory at the moment (from VRAM and physical RAM).

    Edit: Can anyone with a GTX 980 make that 3GB memory burner test and look what process explorer dedicated and comitted memory usage says?
     
    Last edited: Jan 17, 2015
  7. Headd

    Headd Active Member

    Messages:
    75
    Likes Received:
    5
    GPU:
    GTX970
    Shadow of mordor benchmark.Both users have 8GB Ram.
    GTX980 uses 4GBVram and 970 only bellow 3600MB.
    So its not because 8GB ram.

    Or maybe GTX980 can use 4GB Vram with 8GB ram and 970 cant?And you need 16GB to use full 4Gb Vram?
     
    Last edited: Jan 17, 2015
  8. Pill Monster

    Pill Monster Banned

    Messages:
    25,211
    Likes Received:
    9
    GPU:
    7950 Vapor-X 1100/1500
    Dedicated Commit amount is exactly used vram. If it was system GPU memory it would state that.

    Dedicated is the same as onboard.

    5mins ago you didn't know how to read Task Manager, now you're an expert? should I smell a rat?
     
    Last edited: Jan 17, 2015
  9. Vidik

    Vidik Master Guru

    Messages:
    619
    Likes Received:
    220
    GPU:
    MSI 1070 Gaming Z
    My 970 never went above ~3800 in shadow of mordor and ~3500 in FC4 so that's not the case I guess.
     
  10. VultureX

    VultureX Banned

    Messages:
    2,577
    Likes Received:
    0
    GPU:
    MSI GTX970 SLI
    This is so short-sighted. We already knew that since page 1.

    You keep ignoring the legit and loads of example videos that are posted here and you keep talking about the page file, which has absolutely nothing to do with the issue.

    I have owned 2x670GTX 4GB and in all the games I have seen over 4000MB vRAM usage the GTX970 is not using it in my system either. Why is the 970GTX showing this behaviour and why in cases of obvious vRAM shortage (stuttering) is it not using the last ~500MB?!This question is still not answered. This is the topic of the thread. Not the page file usage.

    We know there are a lot of users posting crap or crazy comments, but the genuine users that discovered this problem are being completely snowed under by the trolls and misinformation and the changing of subject.

    ManuelG has posted in this thread and looked at some of the example games. He said he passed the problem on to the QA department. It's just a shame that this is the ONLY official comment I could find ANYWHERE on the internet.

     

  11. bwat47

    bwat47 Guest

    Messages:
    79
    Likes Received:
    0
    GPU:
    MSI GTX 970
    edit:nvm
     
    Last edited: Jan 17, 2015
  12. Pill Monster

    Pill Monster Banned

    Messages:
    25,211
    Likes Received:
    9
    GPU:
    7950 Vapor-X 1100/1500
    That's complete bull.
     
  13. doktor

    doktor Guest

    Messages:
    16
    Likes Received:
    0
    GPU:
    GIGABYTE GTX970 G1
    Please look at this picture and tell mi which graph you mean with Dedicated Commit amount.
    [​IMG]

    That's right, the dedicated memory is the onboard memory of the gpu.
    But the commited memory is not the same as the used onboard memory.

    When didn't i know to read a task manager?
     
  14. Pill Monster

    Pill Monster Banned

    Messages:
    25,211
    Likes Received:
    9
    GPU:
    7950 Vapor-X 1100/1500
    How bout you post the same graph that was in my reply. Never mind, I'll be right back with an answer. Just gotta check systernals. :)


    Yes it is because it's committed dedicated memory.

    When I had to explain how to use it and where your missing memory was. I was being a smartass. :p
     
    Last edited: Jan 17, 2015
  15. SuperAverage

    SuperAverage Guest

    Messages:
    247
    Likes Received:
    2
    GPU:
    Gigabyte xtreme 1080
    The 970's certainly will use all 4GB, but seems to handle memory a tad differently than the 980 does.

    I just wonder why?
     

  16. SuperAverage

    SuperAverage Guest

    Messages:
    247
    Likes Received:
    2
    GPU:
    Gigabyte xtreme 1080
    This is unplayable, obviously, but the right settings get you to 4GB pretty easily.

    [​IMG]

    Damn, 12GB ram usage, and giant commit charge.
     
    Last edited: Jan 17, 2015
  17. VultureX

    VultureX Banned

    Messages:
    2,577
    Likes Received:
    0
    GPU:
    MSI GTX970 SLI
    Yes, nobody seems to be able to answer that question.
    They can only avoid the issue and talk about completely unrelated matters.
     
  18. VultureX

    VultureX Banned

    Messages:
    2,577
    Likes Received:
    0
    GPU:
    MSI GTX970 SLI
    Maxing out vRAM will not cause stuttering.
    vRAM memory can be paged, vRAM that is used by Windows will be paged if more vRAM is required by the full screen application, so that's not how it works.
     
  19. Noisiv

    Noisiv Ancient Guru

    Messages:
    8,230
    Likes Received:
    1,494
    GPU:
    2070 Super
    No!

    That's not the issue.
    The issue would be if perf. difference between the two is considerably higher than normal.

    For all we care 970 can use 1MB; if performance remains ~85% of 980, that's not an issue for end user to be concerned with.
     
  20. doktor

    doktor Guest

    Messages:
    16
    Likes Received:
    0
    GPU:
    GIGABYTE GTX970 G1
    No graph i posted says something about commited dedicated memory.

    I really dont unterstand why you use this term o_O There is commited gpu memory and dedicated gpu memory. Committed dedicated makes no sense for me.
    You explained to me where i can find it, but your answer was not correct.

    The 10GB rise of the TM commit i was talking about:
    Doesn't result in a bigger virtual process size as you stated,
    It's the combined value of used physical system memory AND commited gpu memory. Note the screenshot is not from the moment of the qoute.
    [​IMG]
     
Thread Status:
Not open for further replies.

Share This Page