GPU-Z VDDC = 1.271v on load... AB set to 1.3v
so that means there's a bad vdroop on the GHz bios

Uh? How to check those thingy? Did Ghz bios allow you to clock higher? In my case, yes... Better than stock bios... BTW, can someone with Sapphire Radeon HD 7970 who able to flash to Ghz share their stock bios backup here? I forgot to backup mine. Now with bios frow Techpowerup, I can't flash to Ghz anymore. And by the way guys, how to know if the powertune is really working?

One more thing... Something wrong with my driver. I installed 12.7, but it's "not detected". No Catalyst version in CCC, GPUZ, and MSI Kombuster. Tried to uninstall and change to 12.6, detected correctly. But on 12.7, no stability issue during 3DMark 11. Haven't tried with any game yet... So, though my driver not detected correctly, is it okay if I keep using this driver right?

As mentioned earlier, GPU-Z & AB recorded the voltages.
Custom MSI bios vs GHz
max clocks: 1342/1750 vs 1300/1800
As mentioned earlier, again, GHz is better on mem OC, but can't go above 1300 due to load volt downed to 1.271v although AB set to 1.3v

The missing CCC version is a known issue, something wrong with the registry entry during installation.
Apparently this won't affect the performance of 12.7 beta as it is still there.
12.7 beta is 8.981.2.0.

What version is your card? Can I try your custom bios with my Sapphire HD 7970? Mind to share? And how to know the powerboost is working?

And for oc'ing, which benchmarking apps that similar to real world? I tried Furmark and Kombustor, both apps only heat up my gpu even on 100% fan but no artifacts or crash on 1220/ 1500, infact I can up the core again. But for 3DMark 11, the temp is far lower than those apps but will crash "driver not responding" on same clock. So, I think 3DMark 11 are the best for me now. I haven't installed any game yet and downloading the demo for benchmarking is troubling due to my slow internet and big download size...

And after 3DMark 11 crash on 1220, running 1215 will cause driver crash happen again. But if I restart my pc and run again 1215 for 3 times, no driver crash but the P Score is might lower or higher. So, do we need to restart pc everytime there is a crash? And in my case 1215 is stable or not? What say you boss? This one quite confused me... Never do serious card oc'ing like this. This card is a poison for me.

This bios will work on any brand as long as it's a ref 7970.

And PowerTune’s new “Boost” feature, which allows the GPU to dynamically OC itself up to 1050MHz if the GPU has thermal headroom. Unless if your taking about stock clocks 1050/1500, manual OCing will override the Powertune feature so i dont think what benefit.

Extremed Unigine Heaven 3.0 is more stressful. Your card seems to be unstable & needs more volts at 1215.

I will test Unigine Heaven tonight since my monitor just arrived. Thanks for the bios. I'm looking for bios that have the highest oc on stock voltage. Gonna use for 24/7. Hehe... So, what do you mean is, those boost are useless if we clock higher than 1050? Wow... Thanks a lot mate...

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Added on July 24, 2012, 4:36 pmDo I have rename "v2772d.102" to .rom?

This post has been edited by diaBoliQu3: Jul 24 2012, 04:36 PM

rename & give it a shot

Okay, after I get back from work... With Ghz bios, stable at 1205/1500/1162mv. Tested with Heaven benchmarking. At 1210 no crash but 1 out of 3 run, artifacts appear. Seems like this is a great tool to test stability for a short time.

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Added on July 25, 2012, 1:52 pmIf PC freeze during Heaven benchmark, what does it indicate for? Bad oc'ing or Seasonic 620w S12II is not good enough to oc this monster?

This post has been edited by diaBoliQu3: Jul 25 2012, 02:05 PM

MSI Afterburner 2.2.3

flashed my CF 7970 to GHz bios
Can't even stable @ 1275/1700 which is pretty bad
Going back to special MSI bios...

Waiting for my Sapphire 7950..will joining you guys for great OC

not bad:
Arctic Accelero Hybrid 7970 Liquid Cooling System review

was told this is expansive to buy around rm600
but temps are almost close to water cooling

what are you waiting for bro? , Just grab 2 or 3 units for your 7970s CFx/TFx hehe...good product but the price

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Added on September 28, 2012, 12:31 amWelcome to the proud AMD HD7xxx owner . Please share your HD7950 OC results/exp with us all

This post has been edited by shepard: Sep 28 2012, 12:31 AM

Everyone,

I have updated 1st post with latest driver page and OC utilities download page...Feel free to explore and download but dont forget to share your OC results

Already using waterblocks for the tri cards
Temps are 30c ambient and load 42c

Whoa..good for you bro, I dont have enough budget to build such a monster gaming rig like you or owikh .

btw, I read somewhere that 12.9 beta driver fixes trifire+eyefinity configuaration is it reliable source?

Received my Sapphire 7950 last Saturday, but unfortunately it's not a dual fan version as promise.
So I return the GC and now still waiting my Dual fan OC version to arrive.
But anyhow, I think worth additional RM60 for a dual fan, cos I don't want heat issue to stop my overclocking result

Last time using HD7970 reference the noise also become a problem bro..but my current HD7850 using Dual-x dual fan even at 70% also the noise is still acceptable. And yeah its cooler too, good decision and choice from you I would say

From all the review, I should say I don't like the reference noise.
Beside, the heatsink also different
I wonder what's the different between this two in terms of material and overclockbility
http://www.sapphiretech.com/presentation/p...sn=&lid=1&leg=0
http://www.sapphiretech.com/presentation/p...sn=&lid=1&leg=0