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

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May 8, 2014 2:59:13 PM

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!
a c 112 À AMD
May 8, 2014 3:03:35 PM

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.
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May 8, 2014 3:09:57 PM

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
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May 8, 2014 3:55:08 PM

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
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a c 112 À AMD
May 8, 2014 3:56:00 PM

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?
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May 8, 2014 3:56:09 PM

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

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May 8, 2014 3:58:59 PM

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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