2 cards, 3 monitors and gaming...

snouter

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Jan 5, 2008
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I have an HD4890 driving a 1680x1050 monitor as my main desktop. I have an HD3850 driving two 1280x1024 monitors on the sides. When I want to take a break, I just fire up a game and it goes to the middle screen driven by the HD4890.

Is this right or do I need to do weird stuff like disconnect the side monitors and reboot?

The reason I ask is that I'm getting black texture flashes occasionally when I game, and this never happened using this same monitor with an E6750 and the HD3850. With the i7 and the HD4890 I did not expect to see this.

Is this overheating? Nothing is overclocked. CPU runs pretty cool - idles 39-40 and pegged hits 58-61.

How can I monitor GPU temps and what is too hot for a GPU?

Drivers were Catalyst 9.6 and now 9.7. No change in behavior.

Even though nothing is really happening on the side screens, the driver has to manage them?
 

yh125d

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Dec 23, 2006
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You can monitor the GPU using HWmonitor. As long as it's under 80c you're fine for long term use. You could get GPU-z for more in depth monitoring, it splits the temps into memio, shader, vrm, and gpu core temps I think.


And You don't need to reboot or anything. Whichever monitor the vid is being output to will be properly rendered by its card
 

snouter

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Jan 5, 2008
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thanks for the tip on HWMonitor...

now on to the cooling sections I guess... lolz

Playing Cod4:WaW the low temp was78c and it peaked at 83c...

Maybe the cause of the little texture blips?

HD4890 idles around 65c?

I have two fans pulling air out and that air is not all that warm.

The HD3850 (not used for gaming or in Crossfire) is under the HD4890 and peak temp has been 66c.

Maybe I need to pull more cold air into the case?
 

Modelworks

Lifer
Feb 22, 2007
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66C isn't too bad . If you want to see if getting more air in the case will help just take the cover off the case and see if the temps drop.
 

snouter

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Jan 5, 2008
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Originally posted by: Modelworks
66C isn't too bad . If you want to see if getting more air in the case will help just take the cover off the case and see if the temps drop.

sorry for the confusion... 66c was on the HD3850 which I'm not using for gaming or in Crossfire.

the HD4890 peaked at 83c.

I'll try the cover off, although I guess I've hear you want to move air into and out of the case since when the cover is off the air does not quite flow like that, although, I guess no heat is trapped either...

thanks,.
 

snouter

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Jan 5, 2008
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taking the cover off dropped the peak temp from 83c to 78c... idle dropped from 65 to 61...
 

yh125d

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Dec 23, 2006
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Open up Catalyst Control Center and turn the fan speed up. Enable manual fan control and bump it up 10-15% or so.
 

yh125d

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Dec 23, 2006
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Originally posted by: Lonyo
83c isn't much and certainly shouldn't be causing your issues.

The 83c is his GPU core, his memio could be higher causing artifacts



OP, run gpu-z to see what the temps are for memio and dispio
 

snouter

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Jan 5, 2008
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thanks...

ran GPU-z and saw MEMIO hitting 87c and hanging out in the mid 80s... it was always towards 5-8c higher than the GPU

went into Catalyst and sets fans at 50%... MEMIO never cracked 78c... too loud though...

I set up hot keys to activate fans at 40% and hot keys to set fans back to normal...

Is this what I have to do? Seems kind of weird to have to manage my fans like this...

The 3850 is 2 slots under the 4890, so it radiates heat up, but... that much?

Anyhow, with increased video card fan speed, I did not notice any artifacting... and the temps def dropped a fair bit...