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eccerr0r
Watchman
Joined: 01 Jul 2004
Posts: 9677
Location: almost Mile High in the USA
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 Posted: Wed Sep 04, 2013 6:03 pm Post subject: fglrx/ati-drivers power consumption on RadeonHD |
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Anyone tried reducing power on their RadeonHD with the fglrx driver?
I wonder if it's possible to drop the power consumption of the graphics board any. I was planning to leave this machine on but was wondering about the GPU (RadeonHD 5770) eating power when nobody is at the console - the GPU still stays quite warm:
| Code: | radeon-pci-0100
temp1: +48.0 C
it8718-isa-0290
NB Temp: +43.0 C (low = +0.0 C, high = +65.0 C) sensor = thermistor
CPU Temp: +37.0 C (low = +0.0 C, high = +85.0 C) sensor = thermal diode
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +30.0 C (high = +63.0 C, crit = +85.0 C)
Core 1: +29.0 C (high = +63.0 C, crit = +85.0 C)
Core 2: +28.0 C (high = +63.0 C, crit = +85.0 C)
Core 3: +27.0 C (high = +63.0 C, crit = +85.0 C)
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The northbridge doesn't even have a fan, gets quite warm, and is still cooler than the GPU...
Anyone muck with this?
(trying to get whole system power consumption down to around 100W or so when idle if possible. I think the CPU is already doing its part... And most of the remaining power is the hard drives...) |
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Ant P.
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Joined: 18 Apr 2009
Posts: 6920
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| Posted: Wed Sep 04, 2013 7:10 pm Post subject: |
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| Doing `xset dpms force off` should drop the temp a few degrees. Not sure how you'd do DPMS on a console for a non-KMS driver. |
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eccerr0r
Watchman
Joined: 01 Jul 2004
Posts: 9677
Location: almost Mile High in the USA
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| Posted: Wed Sep 04, 2013 8:01 pm Post subject: |
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Hmm... Quite possibly the machine already has the screens in power save mode. I wonder if the remaining power consumption by the GPU is purely leakage power... (and if there's a way to shut off parts of the chip to combat that, too.)
though if there was a way to underclock and see if that helps any...
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Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
What am I supposed watching? |
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