R9-295x2 Throttling and low frames

TheOnlyDoor

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Feb 25, 2011
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So I asked a similar question a week ago but could not get a definitive response.
I have my 295x2 raditaor and fan mounted to the top of my case. The radiator is screwed to the top (inside the case of course) with the fan under it exhausting through the rad then out of the top of the case.
I have not overclocked this card, yet in BF4 and Crysis 3, HWmonitor shows max temps at 74c. Since throttle temp in 75c the card must be throttling.
This is the case I have: http://www.outletpc.com/xf7975-thermaltake-armor-revo-gene-atx-gaming-case.html?gclid=CjgKEAjwuMmdBRDljdfi2_qQpxkSJADDCRwsKImy4-HiLMNyKZr2D-_b7d_3aiDj8snPk2Ms-CFKf_D_BwE
With side, under, front and rear intake with exhaust in the top I should have sufficent airflow.
Any Ideas or suggestions?
 
You should try running pull configuration for the fans instead of push (fans on top of the rad, not below), as you are blowing the hot air from the system on the rad instead of sucking the heat from it. Push-Pull config is slightly more efficient if you have enough clearance to have the fans attached both above and below the rad.
Are you running a custom water loop?
 

TheOnlyDoor

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No its not custom, this is the built in closed loop system for the Radeon R9-295x2.
I will try the pull method you suggested.
 

TheOnlyDoor

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I switched the fan and radiator around so the fan is pulling the heat from the rad and exhausting out the top. Temp still hit the 75c throttle. Both GPU's on the card drop from 1018mhz to around 850mhz
when this happens.
 

kalijaga

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Hi,

I understand the frustation when the temp reached 75C.
My radiator is attached at the back exhaust with another fan attached for a push-pull configuration, and still reached the max temp with throttling. Another radiator for another card exhaust forward in another push-pull config.
I noticed that the one exhausting forward is slightly cooler by about 2-3C at full load, but both card will reached max temp easily and throttled.
I feel that ambient temp makes a different, and the fact that the radiator is taking the hot air from the case (in my case the temp is about 40C) makes a difference. If permissible, maybe you can try putting the rad outside taking ambient air and then use push-pull and see if that makes a difference.
I assume (I am prob wrong) that the max ability of water cooling is about 20- 30C from ambient depending of the rad size. If the card have a thick 240mm or even better 360mm rads, I feel we will reached the full WC setup temps..about 50-60C at full load.

Good luck and congrats on the card.

 

TheOnlyDoor

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Thanks for the advice, however with 5 intake fans the case temp is cool. I think its just the design. I'd figure that the cooling solution would have been well tested and QA'd before release. Did they test it in a freezer?
Whats the point of 1018 clock speeds if anytime I play a graphically demanding game the card throttles and loses 200mhz. Thats a heavy framerate hit.
I dunno, is this something a driver could fix?
Other wise I'm pissed I have a card that will never preform like it should becuase it's cooling solution was inadequate.