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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 1481

post #14801 of 38721
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Originally Posted by Imprezzion View Post

Lol. I just tried my VRM temps again as well after they overheated during a few hot ambient days here.
For the ones that didn't read that: Using a reference 7970 with a Accelero 7970 - fan module and with 2 Slipstream 1600RPM fans tied to it.
VRM sinks of Arctic are just way too small, and the thermal tape self-mix goo is rather bad as well. With a voltage of 1.243v and 1230Mhz core, 1.625v VRAM and 1700Mhz VRAM I hit well over 100c in BF3.
Also, Heaven 3.0 on all max could pull it pretty high, but not as high as BF3. Current load was about 140-160 amps in BF3 max.
Tried them at those clocks again now that ambients are back to 20~ish deg. celsius. Roomtemp was like, 21c now.
Ran Heaven, somehow VRM's stayed REAL cool, only 66c for VRM1 and 54c for VRM2 in GPU-Z. Current draw was pretty low, only averaging about 124 amps.
So, I decided to REALLY test them with something that pulls EVEN MORE amps and load then Furmark does. OCCT.
That managed to pull a figure well over 200 amps quite easily with the average current being about 223 amps. (VDrop was quite extreme, it did artifact lightly due to it)
Well, that load on the VRM's caused VRM2 to behave very normally and slowly go up to about 65c and staying there, but VRM1 just SHOT up like a rocket and within 60 seconds it had reached 105c and seemed to stabilize there but no, every 5 seconds it would climb a degree and every 4-5 degrees VDrop increased till the point OCCT just died with the VRM1 temp at about 128-130c.
So, This Arctic heatsink is VERY good in terms of core temps, only 65c even with 200+ amps (240-260w) on it, but the VRM sinks are severely worthless. I'm going to find a way to cool them better.

Please post if you find a solution. I also have the accelero on a ref 7970. The highest I hit was 90deg on VRM's but that was w/out upping the voltage (1.174). To keep them down I undervolted to 1.150 and they stay below 70deg but limits my overclock.
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post #14802 of 38721
I've been trying to see if my coil whine goes away based on some reading I've done, where people claim that it goes away if a GPU is left on the load that makes it whiny/screechy for a prolonged period of time. I've been leaving it on Warhammer 40,000 Dawn of War graphics menu for ~6 hour intervals (a few so far), and it appears that the noise has diminished. It's still there, but not that loud anymore, quite tolerable. Here's to hoping it will diminish even less soon.

On another note, wow, this Sapphire Dual-X 7970 has some hoover-quality fans. The BIOS auto-fan settings make RPM increase in direct proportion to temperature (1:1), and over 40%, the fan is quite audible, at 60 it's definitely a powerful whoosh. My ASUS Direct CU II GTX 670 is barely audible at high temperatures. My HIS IceQ X 7870 also had noticeable fans up from 50%, but quieter than the Sapphire. Beyond that, I haven't seen the temperatures go over mid 60s yet (beyond Furmark 15min test, where it gets to 79C 3rd way through). I'm mostly testing it at 1125MHz core, 1500MHz memory, and stock voltage with +10% power limit to establish that it performs well without too much stress at least.
Edited by ElevenEleven - 8/22/12 at 11:14am
   
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post #14803 of 38721
Per an earlier request, I ran Heaven on my AMD rig which currently has a reference 7970 in crossfire with a 7950. For the test I left the 7970 at stock and OC'ed the 7950 slightly to match the 7970 (925/1350).
post #14804 of 38721
Quote:
Originally Posted by Majin SSJ Eric View Post

Quote:
Originally Posted by DaClownie View Post

I'm using 12.8 WHQL and my card still clocks to the higher 1200s like it was doing before.
Also, Trixx is really nice for those that were wondering. I just wish it auto switched clocks/volts like Afterburner used to do for me, as I don't want to course 1.3v through the chip when the thing is idle. Seems a bit overkill. Leaves me manually changing clocks before and after gaming sessions.

Why you OCing just for gaming? That 7970 is more than capable for most games at stock clocks isn't it?

Why do you need the radio and the TV on at the same time?

Because I like to party.

Nah, in BF3, it needs to be OCed to stay pegged at 60fps with fraps running. At 1300/1700 I never dipped below 65fps with FRAPS going at 1080p.
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post #14805 of 38721
So I just received my visiontek 7970 and it has an ASIC of 58.5% and stock voltage of 1174mv. I guess i can't expect a very good OC outa this? mad.gif
Although I heard low ASIC means voltage leakage and high temps, my idle temp is at 27C right now which seems hella low to me.
    
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post #14806 of 38721

I just got my Visiontek 7970 today and I am about to install it now. I hope this does not give me any issues that my MSi's gave me. :) been a very long month with my rig down

 

my ASIC reads 73.7


Edited by 4LC4PON3 - 8/22/12 at 1:33pm
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post #14807 of 38721

update: all my problems are fixed by switching to a new brand video card. my Visiontek 7970 is running as smooth as butter compared to those MSi Twin Frozr's that I had. Thank goodness everything is back to normal and now my rig is back running again.

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post #14808 of 38721
Quote:
Originally Posted by 4LC4PON3 View Post

update: all my problems are fixed by switching to a new brand video card. my Visiontek 7970 is running as smooth as butter compared to those MSi Twin Frozr's that I had. Thank goodness everything is back to normal and now my rig is back running again.

good for you. do not forget to register it.
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post #14809 of 38721
Quote:
Originally Posted by vonalka View Post

Per an earlier request, I ran Heaven on my AMD rig which currently has a reference 7970 in crossfire with a 7950. For the test I left the 7970 at stock and OC'ed the 7950 slightly to match the 7970 (925/1350).
* Image showing 1x 7950 & 1x 7970 Crossfire X *
Big thanks for showing me that benchmark! biggrin.gif Plus rep for that thumb.gif
Planning to buy another card later, just waiting for my 7950 to be delivered this week smile.gif I think of buying a 7970 as the second card, but how good PSU do I need with that crossfire X setup (gonna buy a new one)? Look at my pc parts in my signature smile.gif
    
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post #14810 of 38721
Quote:
Originally Posted by rdr09 View Post


good for you. do not forget to register it.

 

Yeah I wont forget. I am going to do that after i get back from the store. After I installed it I was worried because those 2 MSi's gave me hell for about a month. Im glad its all worked out cause I just could not deal with my rig being down again. If this card ran like crap then something else was wrong with my rig other then video cards & I was starting to think possibly mobo but all is now well. I can finally play some BF3

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