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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 1509

post #15081 of 38704
Quote:
Originally Posted by Newbie2009 View Post

I would get a hard lock and have to reset computer, this was back in Jan though, not sure of it was a driver issue. Is Kombuster DX11?
OCCT I found stresses the card hugely in dx10 but I was getting different results when benching dx11 games. Perhaps that's why you need more juice for BF3.

Yep, and yeah. Hard lock sort of.. PC reboots and then hangs till I press the power button. Then it turns off and lets me reboot.
I think the Thermalright R4 would fit my card.. It's just a matter of getting one at the right price, and if it doesn't fit well it's $50 wasted. I'll need to get a 5850/5870 and look at the VRM layout to compare to my card.

EDIT: So far it's looking like it may be a solution.
Edited by Matt-Matt - 8/27/12 at 5:43am
 
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post #15082 of 38704
Quote:
Originally Posted by Matt-Matt View Post

Yep, and yeah. Hard lock sort of.. PC reboots and then hangs till I press the power button. Then it turns off and lets me reboot.
I think the Thermalright R4 would fit my card.. It's just a matter of getting one at the right price, and if it doesn't fit well it's $50 wasted. I'll need to get a 5850/5870 and look at the VRM layout to compare to my card.
EDIT: So far it's looking like it may be a solution.

I think getting worried about Kombustor or Furmark is just not worth it. Test your card with real applications like Crysis 2, BF3, Heaven 3.0, 3D Mark 11. Also your stock VRM seems to be ok. In fact getting a new VRM heatsink would be only necessary if your VRM temps cross 100c in normal apps. If it does in that case get a good VRM heatsink as it would lower VRM temps and help improve stability.
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post #15083 of 38704
Personally I've found Crysis 2 not to be too intensive on the heat on these cards. Anno 2070 seems to be about all that kicks my ass. OC'd to 1075/1450 with auto fan I've gotten after about an hour of playing each:

Anno 2070 70
Crysis 2 63~64
Portal 2 60
post #15084 of 38704
What kind of VRM headsinks would work on these cards? Do you need to remove the fans first and then replace them?
Edited by TheRaven - 8/27/12 at 9:47am
post #15085 of 38704
Quote:
Originally Posted by TheRaven View Post

All this talk of VRM heating makes me think these cards just run at higher temps. WOuld something like these help at all?
http://www.arcticmod.com/computer-mod/swiftech-mc14-vga-memory-ram-heatsink-pack-8-heatsinks.htm

Yeah, they can seem to run at 100c, day in day out without packing in.
I heard they can run at 120c till the card reduces it's speeds and voltage.
Also, I found that airflow from a direct 120mm fan can reduce VRM temps by 15c-20c, or at least it did for me. I have no cooling sinks on my VRM's. Those sinks in the link will help, but by how much, I am not sure.
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post #15086 of 38704
Quote:
Originally Posted by Newbie2009 View Post


However, these temps are just stress tests, my VRMs don't go above 65c for gaming. You agree?

Furmark heats up the VRMs way more than any game. It produces an extreme temp situation which I like for testing cooling performance.
Edited by SonDa5 - 8/27/12 at 11:00am
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post #15087 of 38704
Quote:
Originally Posted by BradleyW View Post

Yeah, they can seem to run at 100c, day in day out without packing in.
I heard they can run at 120c till the card reduces it's speeds and voltage.
Also, I found that airflow from a direct 120mm fan can reduce VRM temps by 15c-20c, or at least it did for me. I have no cooling sinks on my VRM's. Those sinks in the link will help, but by how much, I am not sure.

That's actually good to hear. I ordered a Gentle Typhoon 120mm fan that should be in today. There was an empty slot for a case fan right in front of my video card that I will slip this into.

I will post my results on what the temperature difference is. But GPU-Z doesn't have VRM temperature that I can fine. What program is everyone using to get their VRM temps?
post #15088 of 38704
what drivers are you guys using?
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post #15089 of 38704
I use 12.8. I haven't had any problems but I also don't run in crossfire. I hear alot of issues with 12.8 in crossfire.
post #15090 of 38704
Quote:
Originally Posted by TheRaven View Post

But GPU-Z doesn't have VRM temperature that I can fine. What program is everyone using to get their VRM temps?

The latest Gpu-z shows vrm temps.

Quote:
Originally Posted by qbical View Post

what drivers are you guys using?

+1 on 12.8 here. So far so good.
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