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Nvidia looking into problem high IDLE power usage vs high refreshrate
The IDLE power consumption of Nvidia graphics cards in combination with a GSYNC monitor with a high refresh-rate is much higher compared to regular monitors. Nvidia confirmed the problem and is working on a solution.
During testing of a Asus PG279Q Ryan Shrout from PC Perspective discovered this abnormal behaviour. The 27"-in GSYNC monitor at 165 Hz made his test system use much more power in Idle opposed to your regular PC at a 60Hz refresh-rate.
The power consumption differences in IDLE are massive, at 60 Hz the PC utilizes 74 Watts, yet at 165Hz his PC started using 201 Watts in IDLE, yes that's just displaying your idle Windows desktop.Once you look at the graphics card (in this case a GeForce GTX 980 Ti) the problem becomes abundantly clear, ay 60 Hz the card will have a baseclock of 135 MHz and with 120Hz or higher, the cards kicks in and remains at 885 MHz. The problem only seems to be focusing at GSYNC monitors. Disabling GSYNC does not change the power consumption at 144 Hz.
NVIDIA is looking into this and has found the problem. They will issue a fix with a driver future update.
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Fox2232
Senior Member
Posts: 10088
Joined: 2012-07-20
Senior Member
Posts: 10088
Joined: 2012-07-20
#5185787 Posted on: 11/09/2015 01:02 PM
Considering average PC user/gamer has it running quite a lot on idle (browsing, watching movie, listening music, ...), I would say this is not nice.
But I am not one to bash it since I am running CPU at permanent 4.5GHz, no power states, nothing to conserve energy. But it eats only 15W more on idle than having speedstep and down-clocking to 1.6GHz.
Considering average PC user/gamer has it running quite a lot on idle (browsing, watching movie, listening music, ...), I would say this is not nice.
But I am not one to bash it since I am running CPU at permanent 4.5GHz, no power states, nothing to conserve energy. But it eats only 15W more on idle than having speedstep and down-clocking to 1.6GHz.
HonoredShadow
Senior Member
Posts: 4275
Joined: 2007-05-27
Senior Member
Posts: 4275
Joined: 2007-05-27
#5185789 Posted on: 11/09/2015 01:03 PM
Is that even worth doing Fox?
Is that even worth doing Fox?
SetsunaFZero
Member
Posts: 88
Joined: 2010-04-10
Member
Posts: 88
Joined: 2010-04-10
#5185792 Posted on: 11/09/2015 01:12 PM
same here every refreshrate over 100Hz clocks my 980ti to 912Mhz. Monitor Benq XL2411Z
I reported this issue more then 3 months ago to nvidia but nobody gave a ****.
With or without G-Sync. If I switch to 2560x1440x144 my GTX 980Ti goes to 963 MHz idle clock. If I stay at 120 Hz it idles at 135 Mhz. Acer XB270HU monitor.
same here every refreshrate over 100Hz clocks my 980ti to 912Mhz. Monitor Benq XL2411Z
I reported this issue more then 3 months ago to nvidia but nobody gave a ****.
Fox2232
Senior Member
Posts: 10088
Joined: 2012-07-20
Senior Member
Posts: 10088
Joined: 2012-07-20
#5185795 Posted on: 11/09/2015 01:14 PM
When I had 1st i7 with base clock 1.83GHz and turbo 3.2GHz, it did stutter badly based on load as it clocked down and up very often.
With i5 and speedstep I had basically 3 frequencies. Base 1.6GHz (idle), 3.3GHz (standard) and 4.5GHz (turbo). Very aggressive turbo was causing minor stutter, noticeable even on 120Hz.
But locking all 4 cores to 4.5GHz removed it.
So, 15W is small price to pay for removal of CPU clock variation.
Is that even worth doing Fox?
When I had 1st i7 with base clock 1.83GHz and turbo 3.2GHz, it did stutter badly based on load as it clocked down and up very often.
With i5 and speedstep I had basically 3 frequencies. Base 1.6GHz (idle), 3.3GHz (standard) and 4.5GHz (turbo). Very aggressive turbo was causing minor stutter, noticeable even on 120Hz.
But locking all 4 cores to 4.5GHz removed it.
So, 15W is small price to pay for removal of CPU clock variation.
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With or without G-Sync. If I switch to 2560x1440x144 my GTX 980Ti goes to 963 MHz idle clock. If I stay at 120 Hz it idles at 135 Mhz. Acer XB270HU monitor.