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AMD Radeon R9 295X2 Owners Thread

Hi all,

Really sorry if this has been addressed earlier, I tried a search, promise.

I have an MSI 295x2 and a gigabyte 290x trifire. Been playing GTAV using latest drivers.

Problem I have is, the 295 will suddenly drop to 300mhz 2D idle clocks then back up again, causing massive FPS spikes obviously. Memory speeds stay the same. With a bit of monitoring, I think this is happening when one of the 2 internal cards hits over 70 degrees.

Interestingly, the 290 is much warmer but keeps its 3D clocks.

Is there a way to prevent this?

Thanks.

EDIT: just confirmed it with Heaven. The moment the card hits 72 or so, it immediately drops to 2D clocks until it goes to less than 70 and goes back up again.

I should add the the 295x2 is set to 1040 GPU speed to match the 290x, with no increase in voltage or power limit percentage, because it has always been stable as such. Perhaps that's the mistake? Not sure if I can somehow manually control its pump speeds or set a curve like with fan-cooled GPUs.
 
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Nice! I took the plunge Friday and bought one from a competitor at £470, should be a tight squeeze if I can get it in the case + PSU + rad, I haven't seen any pics of one fitted in an M1.

My only concern will be temps so if I can undervolt it and keep it stock I think I will be happy with that result.
 
Sobtanian said:
Hi all,

Really sorry if this has been addressed earlier, I tried a search, promise.

I have an MSI 295x2 and a gigabyte 290x trifire. Been playing GTAV using latest drivers.

Problem I have is, the 295 will suddenly drop to 300mhz 2D idle clocks then back up again, causing massive FPS spikes obviously. Memory speeds stay the same. With a bit of monitoring, I think this is happening when one of the 2 internal cards hits over 70 degrees.

Interestingly, the 290 is much warmer but keeps its 3D clocks.

Is there a way to prevent this?

Thanks.

EDIT: just confirmed it with Heaven. The moment the card hits 72 or so, it immediately drops to 2D clocks until it goes to less than 70 and goes back up again.

I should add the the 295x2 is set to 1040 GPU speed to match the 290x, with no increase in voltage or power limit percentage, because it has always been stable as such. Perhaps that's the mistake? Not sure if I can somehow manually control its pump speeds or set a curve like with fan-cooled GPUs.
Click to expand...

I can field this one, the 295x2's vrms are throttling. Show us a picture of inside your case, we're going to need to improve your airflow.
 
You are indeed right sir, and airflow will SUCK currently because I'm messy.

Solved it for now by keeping the case side open.

Any recommendations for a good case for this setup :)
 
Sobtanian said:
You are indeed right sir, and airflow will SUCK currently because I'm messy.

Solved it for now by keeping the case side open.

Any recommendations for a good case for this setup :)
Click to expand...

Glad to hear that sir.

The Corsair 750D is perfect for the 295x2. Here's a picture from my Red Baron 295x2 QuadFire setup, featuring that case.

rk92ys.jpg
 
AMDMatt said:
I can field this one, the 295x2's vrms are throttling. Show us a picture of inside your case, we're going to need to improve your airflow.
Click to expand...

I think mine are doing the same. Core is cool, but vram temps must be getting high with GTAV (combined with the warmer weather). Going to have to look at the airflow of my case.
 
AMDMatt said:
I've only got 8GB versions and as they were provided for me, i can't sell them. Not that i would anyway, the extra memory comes in handy at 4k.
Click to expand...

It was worth a try :D

Please tell me you had something underneath the card in the photo? and that it wasn't laying directly on those paving slabs :eek:
 
TaKeN said:
It was worth a try :D

Please tell me you had something underneath the card in the photo? and that it wasn't laying directly on those paving slabs :eek:
Click to expand...

It was, i was careful though.

It's yet to see any use at all, had it a few days now. Will give it a test on the weekend and see how it clocks.

It's going to live an easy life mostly, apart from the odd benching run.
 
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