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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 1092

post #10911 of 38701
Quote:
Originally Posted by tsm106 View Post

This is patently false. The MSI rep, MSIAlex has gone as far as he could to dispel this urban legend in saying that they do not bin for overclocking. The top end cards are binned as far as hitting voltage requirement for the ADVERTISED clock speed, and NO HIGHER. You are not guaranteed any degree of overclock beyond the advertised clock speed.
That said, you can keep your Lightning. Do not want.
What I do want is three more freaking crazy Sapphire OC's. I just tested one out on air, and with the little time I had with it, it was running 1180/1600 on stock volts. I'm just waiting to get a waterblock on it lol. It's a shame to put a block on it though, the cooler looks quite hefty and done right.
AMD's fab yields are superb right now.

You are right about the sapphire hd 7970 oc. Unless you really need the extra 10% perf I wouldn't bother pushing it further. But if you still wanna go for it with a water block 1300 might be doable.

http://www.hardocp.com/article/2012/04/10/sapphire_hd_7970_oc_edition_video_card_review/3
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post #10912 of 38701
Quote:
Originally Posted by raghu78 View Post

You are right about the sapphire hd 7970 oc. Unless you really need the extra 10% perf I wouldn't bother pushing it further. But if you still wanna go for it with a water block 1300 might be doable.
http://www.hardocp.com/article/2012/04/10/sapphire_hd_7970_oc_edition_video_card_review/3

Might be doable? Try most likely WILL be doable. another 120mhz with that much voltage left is nothing. I'm able to pull 1300 on air on 2 of my 7970s, so on water on a card like that, he might see 1350.
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post #10913 of 38701
Quote:
Originally Posted by Evil Penguin View Post

Why would it have anything to do with the thermal paste? 
Changing the thermal paste in general is a waste of time and effort in my opinion. 
What is pre-applied is good enough I think. 

The problem the OP occasionally gets might be a software issue. 
Resume issues with the 7xx0 series is somewhat a common issue. 

Yeah it must be software as now that I think about it I have gotten this two times on 12.4 only. It has had no problems before this driver set.

Also to the other guy my temps are idle 31C and max 61C gaming - now way it is my temps lol.

Well I hope AMD fixes the issue in 12.5...
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post #10914 of 38701
Yeah, the OC limits of my Lightnings is kinda disappointing. The ASIC of my second card is only 66% so so much for binning. Really starting to wish I was water cooled, especially when I can only get to stage 12 of the Heaven bench before hitting 85C at 1225MHz / 1287mV...
post #10915 of 38701
Quote:
Originally Posted by Majin SSJ Eric View Post

Yeah, the OC limits of my Lightnings is kinda disappointing. The ASIC of my second card is only 66% so so much for binning. Really starting to wish I was water cooled, especially when I can only get to stage 12 of the Heaven bench before hitting 85C at 1225MHz / 1287mV...

Dang dude. I get 1200 @ 1.225v on my ASIC 68%. I don't think the ASIC really means much on AMD as they said they made it specifically for nVidia and it doesn't really mean much for AMD.
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post #10916 of 38701
My ASIC is pretty high, mid 80s, supposedly meaning its a voltage hog and bad to OC on air.

Which is sooo not true. 1200Mhz stable on 1.188v and 1250Mhz stable as a rock on 1.262v. That aint bad at all so I think ASIC is either pretty meaningless or totally misinterpeted. (or however you're supposed to spell that word wink.gif)
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post #10917 of 38701
Quote:
Originally Posted by Imprezzion View Post

My ASIC is pretty high, mid 80s, supposedly meaning its a voltage hog and bad to OC on air.
Which is sooo not true. 1200Mhz stable on 1.188v and 1250Mhz stable as a rock on 1.262v. That aint bad at all so I think ASIC is either pretty meaningless or totally misinterpeted. (or however you're supposed to spell that word wink.gif)

High asic % equals the opposite actually. It requires less volts to achieve stock clocks and generally runs cooler making them excellent for aircooling. Asic % however doesn't correlate at all to overclocking. That is purely up to the silicon lottery. I've come across a 71% asic card that runs 1200mhz at 1.12v. I hope it's a lottery winner and all signs point to that conclusion.
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post #10918 of 38701
Hey guys, been reading the last few pages on ASIC talk and just wanted to chip in my experience. My Sapphire OC 7950 (which I LOVE to death right now.....) has an ASIC of 75%, and I am able to hit 1200Mhz on 1.225v with 1700Mhz on the memory. So yeah it kind of helps the argument that it doesn't necessarily mean that a high ASIC will give great overclocking, and likewise it doesn't automatically render a low ASIC chip useless. Mine keeps around 70 - 75C gaming with that setting, and I am more than happy with that. I changed my case to a Corsair 300R to help with air flow once I realised just what a beast it was at OC'ing. Added a side panel fan to that and it has dropped my temps around 8C or so. I love the fact that my 2nd tier card from the 'inferior' manufacture destroys the oppositions flagship product. Even though I paid top dollar for the 7950 near release, I do not regret my purchase for a second.

Personally I think the 7900 series is WAY underclocked, and had they been released 100 - 150Mhz faster at stock, we would hear a lot of reviewers singing a different tune when comparing the newer cards to AMD's line up.

Just my 2 cents smile.gif
post #10919 of 38701
Running 1.125mV at 1200/1700. No changes on memory voltages either. Temps with 60% fan staying around 55 degrees while playing BF3.
Edited by General_Jaja - 5/18/12 at 5:22am
post #10920 of 38701
Sapphire 7970 OC is a beast. Enjoying the insane power already.
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