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Question GPU Power consumption in games

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flagmonkey47

Member
While playing Fallout 4 and Far cry Primal I noticed that my RX 460 was not drawing its full 76W as it does in Furmark and other games. It was stuck at 52 W and I got only 24fps. However the GPU utilisation was not dropping much , only to 98% when the drops ocurred. Is this behaviour normal? I was playing at ultra. The odd thing is that when I lower settings the power consumption increases.
 
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what I mean is it can be the game is more demanding or reaches higher gpu usage, that increases boost clocks hence uses higher boost voltage and increases power consumption there are games which power consumption are quite different maybe a 20-15w difference or so in some cases, but this could be something like thermal throttling if you card underpeforms and the vrm temps are high or some driver bug
 
PontiacGTX said:
what I mean is it can be the game is more demanding or reaches higher gpu usage, that increases boost clocks hence uses higher boost voltage and increases power consumption there are games which power consumption are quite different maybe a 20-15w difference or so in some cases, but this could be something like thermal throttling if you card underpeforms and the vrm temps are high or some driver bug
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What is confusing me is that when the fps climbs the power consumption rises and when the fps drops power consumption lowers. I think psolord is correct about power consumption behaviour of GPUs. And yes my temps are fine.
 
only I can think is a bottleneck or the game reduces the load for some reason, also could be the card throttling itself you should check the clocks and save the logs from a monitoring tool
 
flagmonkey47 said:
Do you mean forcing vsync off using .ini files? I tried that already. I saw on the internet how a GTX 960 was having problem with this game so i think my fps is as it should be. What do you think?
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No, by rehashing the game files, I meant checking their integrity. Maybe there is something wrong with them, that could inhibit the system from working properly.

The tampering with the vcync could help up to a point but it messes with the physics engine as well. Did it help?
 
psolord said:
No, by rehashing the game files, I meant checking their integrity. Maybe there is something wrong with them, that could inhibit the system from working properly.

The tampering with the vcync could help up to a point but it messes with the physics engine as well. Did it help?
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I found out the root cause of the problem but I don't know how to fix it. When I enabled bootlog option I saw that a directx component named as dxkrnl.sys is not loaded while booting. It could be AMD drivers issue or my motherboard. I have tried doing clean install of windows and running directx installer from Microsoft's site.
 
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