AMD XFX 7870tahiti CF with 7950 Low GPU usage Help please.

Hello,
I play games like BF4 and my cards (XFX 7870tahiti CF with XFX 7950). Normally with one I would get about 90-99% usage but now in CF I get 30-50% usage on each. I do see a performance increase about 50-60 fps on Ultra 200% resoultion scale @1080p (It used to be unplayable at >30fps). But I hope to increase this and run the game better. I also see this on other games too. Is this normal and how can I fix it.
Thanks!
6 answers Last reply
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  1. There are three options:

    1. The cards are overheating.

    2. Your CPU is not strong enough.

    3. You're running out of VRAM since the resolution scale option makes the card render the image in a higher resolution (=higher VRAM usage).

    So: What's your CPU? Download MSI Afterburner (or something like it) to monitor your temps and VRAM usage.
  2. Aleksandar M said:
    Hello,
    I play games like BF4 and my cards (XFX 7870tahiti CF with XFX 7950). Normally with one I would get about 90-99% usage but now in CF I get 30-50% usage on each. I do see a performance increase about 50-60 fps on Ultra 200% resoultion scale @1080p (It used to be unplayable at >30fps). But I hope to increase this and run the game better. I also see this on other games too. Is this normal and how can I fix it.
    Thanks!


    I would suggest perhaps the cards are throttling due to heat
  3. Eduello said:
    There are three options:

    1. The cards are overheating.

    2. Your CPU is not strong enough.

    3. You're running out of VRAM since the resolution scale option makes the card render the image in a higher resolution (=higher VRAM usage).

    So: What's your CPU? Download MSI Afterburner (or something like it) to monitor your temps and VRAM usage.

    My CPU is a stock AMD FX 8320 (that should be good enough). and the temps. are low (60-70c) since it's low usage.
    Thanks for the reply
  4. Aleksandar M said:
    Eduello said:
    There are three options:

    1. The cards are overheating.

    2. Your CPU is not strong enough.

    3. You're running out of VRAM since the resolution scale option makes the card render the image in a higher resolution (=higher VRAM usage).

    So: What's your CPU? Download MSI Afterburner (or something like it) to monitor your temps and VRAM usage.

    My CPU is a stock AMD FX 8320 (that should be good enough). and the temps. are low (60-70c) since it's low usage.
    Thanks for the reply


    What about the VRAM usage while gaming?
  5. Rugnir_Viking said:
    Aleksandar M said:
    Hello,
    I play games like BF4 and my cards (XFX 7870tahiti CF with XFX 7950). Normally with one I would get about 90-99% usage but now in CF I get 30-50% usage on each. I do see a performance increase about 50-60 fps on Ultra 200% resoultion scale @1080p (It used to be unplayable at >30fps). But I hope to increase this and run the game better. I also see this on other games too. Is this normal and how can I fix it.
    Thanks!


    I would suggest perhaps the cards are throttling due to heat

    Since they are running on low usage the amount of heat is very low only 60-70c.
    Thanks for the reply
  6. Just as an update, I saw on YouTube that if you write in GstRender.Thread.MaxProcessorCount 8 it will let you run the game faster. This seemed to work on only one card but now I'm not sure because that may be the problem for BF4. I doubt this because I get the same results on other games, so most likely this is not the root issue.
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