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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 1514

post #15131 of 25569
8/28/12 at 6:48pm
Quote:
Originally Posted by ChrisTahoe View Post

According to this:
http://www.overclock.net/t/1220193/crossfiring-between-different-card-of-the-same-series/0_20#post_16551322
Each card will run at their respective clocks. I'm just wondering if anyone else has run this setup before I pull the trigger. See how it works for them.

Hmm I have been looking for some1 to do the mix crossfire bench.
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post #15132 of 25569
8/28/12 at 7:16pm
I just received my HD7950 today. So far I'm very pleased with it. Been doing a couple of Heaven 3.0 runs and overclocking already!

DX11, Normal tessellation, High shaders, 4x anisotropy, Disabled stereo 3D, Unchecked multi monitor, 1080p 4xAA Fullscreen

800/1250 55.2FPS
900/1250 60.4FPS
1150/1250 71.8FPS

I'll post some screenshots ASAP! thumb.gif
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post #15133 of 25569
8/28/12 at 7:17pm
Quote:
Originally Posted by ChrisTahoe View Post

Thinking about doing a hybrid CFX between my 7970 and a 7950. Anybody have experience with this? From my understanding, both cards will run at their own clocks, and the 7970 will actually not downclock to 7950 performance. Can anyone verify?

I had a 6850 and a 6870 that did this, I actually noticed more problems with microstutter when I switched to 6850 CFX. I'd just suggest to get another of the same card that you have, otherwise you could try overclocking the 7950 to the 7970 speeds to make up the difference. You will probably have to downclock the 7970's VRAM though.
Quote:
Originally Posted by ChrisTahoe View Post

According to this:
http://www.overclock.net/t/1220193/crossfiring-between-different-card-of-the-same-series/0_20#post_16551322
Each card will run at their respective clocks. I'm just wondering if anyone else has run this setup before I pull the trigger. See how it works for them.

Read above.
Quote:
Originally Posted by v1x View Post

hey guys, i have a quick question regarding 7970 and battlefield 3.
i have single 7970, 8gb ram, i7 3770k @ 4.5ghz im using msi AB to check gpu usage and its not all ways at 99% usage.. pretty sure it used to be, i've tried 12.3 ,12.4,12.8 drivers allways using the same method to uninstall. getting random frame drops.;
uninstall via control panel, reboot in to safe mode, use driver sweeper, then install driver.
regards
qrn4ac.jpg

12.6 works best for me, all the other drivers gave me problems. I think 12.7 and 12.8 gave me the problem you're having.
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post #15134 of 25569
8/28/12 at 7:41pm
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post #15135 of 25569
8/28/12 at 7:47pm
Just wanted to say I got a massive temperature drop installing an intake fan on the side of my case. I put in a gentle typhoon 1450 right over my video card (Kinda wishing I got a more powerful version because that one is completely quiet, can't hear it at all when it's on).

My Gigabyte Wind force 7970 is now running at 1100/1500 on stock voltage and auto fan at about ~63 core temp/ ~65 VRM temp in everyhing but Anno 2070.

I got the biggest temp drop in Anno 2070 going 7 degrees cooler from 73/74 Core and 78 VRM down to 66 Core and 71 VRM. Crysis 2 only dropped one or 2 degrees but I was happy with it in the low 60's anyways. Good to see it brining games that broke 70 degrees back down below it.

Gonna get MSI afterburner and do the proper overclocking this weekend. GPU-Z only gave my card a 70.5% ASIC Quality but I'm hoping to hit 1250/1600 without problems.
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post #15136 of 25569
8/28/12 at 7:57pm
Quote:
Originally Posted by Bartouille View Post


That's a really good clock for the ASIC you have, like really good.

Quote:
Originally Posted by TheRaven View Post

Just wanted to say I got a massive temperature drop installing an intake fan on the side of my case. I put in a gentle typhoon 1450 right over my video card (Kinda wishing I got a more powerful version because that one is completely quiet, can't hear it at all when it's on).
My Gigabyte Wind force 7970 is now running at 1100/1500 on stock voltage and auto fan at about ~63 core temp/ ~65 VRM temp in everyhing but Anno 2070.
I got the biggest temp drop in Anno 2070 going 7 degrees cooler from 73/74 Core and 78 VRM down to 66 Core and 71 VRM. Crysis 2 only dropped one or 2 degrees but I was happy with it in the low 60's anyways. Good to see it brining games that broke 70 degrees back down below it.
Gonna get MSI afterburner and do the proper overclocking this weekend. GPU-Z only gave my card a 70.5% ASIC Quality but I'm hoping to hit 1250/1600 without problems.

70% ASIC quality is good, you should hit 1200 easily. You might run into problems with the memory getting that fast but the core should be good for at least 1200. Goodluck wink.gif
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post #15137 of 25569
8/28/12 at 9:26pm
Quote:
Originally Posted by ElevenEleven View Post

My Sapphire's Dual-X VRMs are fine as well - I can have the core run at 70-71C and VRMs stay sub 80C at that.

According to hwinfo my vrm temps with dual x are about 60 when core is 70 degrees. Looks like Dual-X cools the VRMs very well.
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post #15138 of 25569
8/28/12 at 9:47pm
Hrm, could our 15-20C VRM temperature difference be due to differing load types? I use a 1440p monitor and tend to max out all the antialiasing and such.
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post #15139 of 25569
8/28/12 at 9:50pm
Quote:
Originally Posted by Ukkooh View Post

Quote:
Originally Posted by ElevenEleven View Post

My Sapphire's Dual-X VRMs are fine as well - I can have the core run at 70-71C and VRMs stay sub 80C at that.

According to hwinfo my vrm temps with dual x are about 60 when core is 70 degrees. Looks like Dual-X cools the VRMs very well.

my vrms were 62/57c in BF3.
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post #15140 of 25569
8/28/12 at 10:03pm
How do I overclock past 1125/1575 in Afterburner 2.2.3? I tried pioneerisloud's instructions, but the xcl command doesn't do anything. Afterburner doesn't start at all when I use it; no pop ups either.
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