SECOND GPU IS AT O DEGREES C UNLESS BENCHMARKING???

[chefjrf]

hi

I'm running 2 x r9 290x's in my system, as of last night, the second gpu's temperature went to 0 degrees c in afterburner and gpuz for no apparent reason.

if i benchmark and play games, the second gnu is recognised and the tempe goes up like normal.

 

does anyone know whats going on?

 

thanks

[Sin984]

Sounds like there might be a problem with the temp sensor, or the circuit to the temp sensor.

[chefjrf]

1 minute ago, Sin984 said:

Sounds like there might be a problem with the temp sensor, or the circuit to the temp sensor.

thanks for the reply

 

do you know why it would be only in them programs and not games

[Sin984]

Are you saying that some games list the temperature of the video card within it?

 

If it's designed right, with no temperature, *The fans* should be running flat out all the time... otherwise it might overheat.

[Sin984]

I don't know if I am allowed to post links, but this might be it.

 

http://www.overclock.net/t/1459595/gpu-z-not-showing-vrm-temp-for-msi-r9-290-gaming

[chefjrf]

the cards are on a custom water loop

idle temps will be around 28 degrees when idle, this has always come up in AB and gpuz

for some reason, last night, the temp of the second card was at o

i checked the cables etc and everything seemed fine so i ran a benchmark and the card then went up in temp and usage as normal

same when i ran a game, after i quit the benchmark or game, the gnu goes back to 0 

 

very strange

[manikyath]

well.. without having any clue what i'm talking about with crossfire..

 

could it be possible that when not in game, the second GPU isnt doing anything, and AMD's actually well optimized power management shuts the thing down entirely in a similar fashion as nvidia optimus does with laptop GPUs, also shutting down thermal management in the process.

[chefjrf]

31 minutes ago, manikyath said:

well.. without having any clue what i'm talking about with crossfire..

 

could it be possible that when not in game, the second GPU isnt doing anything, and AMD's actually well optimized power management shuts the thing down entirely in a similar fashion as nvidia optimus does with laptop GPUs, also shutting down thermal management in the process.

thank you for the reply, definitely sounds reasonable, my only concern was that this just happened out the blue after running for the last 6 months normally

35 minutes ago, Sin984 said:

I don't know if I am allowed to post links, but this might be it.

 

http://www.overclock.net/t/1459595/gpu-z-not-showing-vrm-temp-for-msi-r9-290-gaming

thanks for the link, ill check the dpi later

[captain cactus]

It's an AMD feature iirc where the 2nd GPU is turned off entirely during light load scenarios (idle, web browsing) to save power and heat.

[chefjrf]

28 minutes ago, lots of unexplainable lag said:

It's an AMD feature iirc where the 2nd GPU is turned off entirely during light load scenarios (idle, web browsing) to save power and heat.

hi, thank you for the reply

i dont suppose why you know this has just happened so suddenly, the gpu was always at o percent usage unless gaming but would always show the idle temp

is it anything to worry about?