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Asus HD 6950 DirectCU II BIOS flash to 6970

Tags:
  • Graphics Cards
  • Asus
  • BIOS
  • Flash
  • Dual Bios
  • Graphics
Last response: in Graphics & Displays
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March 19, 2011 2:51:38 PM

Okay people, I have searched this for god knows how long..

Is it possible to flash (afaik Asus removed the dual-bios switch from their non-reference card) 6950 to 6970?

I have read that they aren't physically the same card, as Asus have made changes to the board etc. so flashing bios would do nothing good. Correct?

Anyone actually have tested this? Haven't even found a DirectCU II 6970 bios available anywhere..


This GPU would easily be the best of it class, if it only had dual-bios switch :pfff:  well you can't have everything.


Thanks in advance.

More about : asus 6950 directcu bios flash 6970

a c 678 U Graphics card
a b Ĉ ASUS
March 19, 2011 4:45:47 PM

You get more benefit from simply overclocking your card, especially since Asus has such a great cooler on it.


http://www.techpowerup.com/articles/overclocking/vidcar...

Of course, the BIOS flash without a bacup BIOS is extremely risky. Basically, if you guess wrong, that's it. Based on the info below, you are stuck with just overclocking.

Some info:
"One significant difference not included on the 6950 DirectCU II is the BIOS switch which would typically allow switching between two BIOSes in the event of a bad flash. Of course, we know this also allowed the 6950 to be flashed to a 6970, and with the improved power design on the DirectCU II, this would have been a perfect card for flashing. However, that's no longer possible here, as the BIOS switch is now gone and component changes have also been made. While the marketing folks would probably call this a "positive tradeoff" for improved durability and temperatures, we're willing to bet the real reason is AMD wasn't too pleased with the widespread ability to simply flash a 6950 to a 6970, thus poaching their own lineup and sales, and put a stop to it with the new models we now see. Since we've seen this change on other manufacturers' non-reference 6950 cards, we know this is not unique to ASUS."
http://www.pureoverclock.com/review.php?id=1233&page=7
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March 19, 2011 5:46:26 PM

Quote:
its better to just unlock the shaders rather than flash the complete 6970 BIOS as the memory of 6970 is higher clocked with more voltage than the 6950.
there have been some stability issues with flashing the complete BIOS.
there is a utility on techpowerup that will unlock shaders from your BIOS. use that to flash.


Yeah I thought something like that. So should I just stick with overclocking only and maybe try unlocking those locked shaders? Would you guys recommend it, how "risky business" is this unlocking exactly? Could something go horribly wrong?
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a c 678 U Graphics card
a b Ĉ ASUS
March 19, 2011 5:52:05 PM

n3007 said:
Yeah I thought something like that. So should I just stick with overclocking only and maybe try unlocking those locked shaders? Would you guys recommend it, how "risky business" is this unlocking exactly? Could something go horribly wrong?

I guess you completely ignored my post, which answered all of those questions?

To summarize: NO you cannot unlock the shaders on a Asus HD6950 DirectCU. YES, you must stick with overclocking as that is your only option.
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March 19, 2011 6:49:54 PM

17seconds said:
I guess you completely ignored my post, which answered all of those questions?

To summarize: NO you cannot unlock the shaders on a Asus HD6950 DirectCU. YES, you must stick with overclocking as that is your only option.


Well SORRY, but I actually did read your post. And you didn't answer all my questions.

It's the other post that confused me, which I quoted earlier. I thought there were *two kind* of bios flashing.. other being used to only unlock shaders AND the other one where one would replace the old bios with 6970 bios. So in the end it's same thing? You can't just unlock shaders and walk away with it?

***, my day is ruined then. Thought I finally found the perfect card :( 
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a c 678 U Graphics card
a b Ĉ ASUS
March 19, 2011 7:26:45 PM

If you had a reference card, you could just unlock the shaders. As shown in the chart, that only produces a minimal boost. Unlocking the shaders and clocking the card to 6970 speeds is the best. For you, a simple overclock, and the Asus 6950 DirectCU overclocks very well, will get you up near the same level of performance.
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March 20, 2011 3:57:37 PM

Quote:
The DirectCU II 6950 should overclock to around 1100 core.


well mine certainly doesn't, I can only get to stable 850 or 900 with voltage mod just like this reviewer: http://www.pureoverclock.com/review.php?id=1233&page=20

Some of the first cards had a 6970 GPU clocked down and used on the 6950.. so some of the first reviewers get better results.

However 1100? Could be possible if you're very lucky but I certainly wouldn't count on it..

as for the unlocking; I don't think it's possible.
It is very quite though; I think it kinda makes up for it :) .
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March 22, 2011 6:09:06 AM

Best answer selected by n3007.
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March 22, 2011 6:13:07 AM

I ended up ordering Asus 6950 2GB reference model, it's just too good deal to pass when the price is also good (240€) Sure it wont run as cool or quiet as DirectCU II but it takes only 2 slots and is a bit shorter, which is important as my case is cramped Antec 300.

And of course keeping thumbs up for successful flashing to a 6970! That's what the dual-bios is for ;) 

Thanks for the help guys!
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April 2, 2011 6:12:23 PM

I just wanna clear up everything I own a Asus Hd 6950 2gb DCUII and IT IS UNLOCKABLE....I have modded bios and works perfect....only problem is I cannot figure out how to mod the bios to allow a voltage change but My card is clocked at 925/1350 but I used to be able to be 950/1350 but If i go above 930 i have issues.
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April 2, 2011 6:14:37 PM

Which bios did you use?
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a b U Graphics card
April 2, 2011 6:27:29 PM

I asked him for the bios or link in email.
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April 2, 2011 6:58:04 PM

I created my own from my own bios I modded it.
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April 2, 2011 7:01:46 PM

I have the bios I just emailed to someone else so if he can post his views I would appreciate that....also anyone else want it email me.
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April 2, 2011 7:04:47 PM

one thing though when I modded this bios i couldnt add any voltage modifications to it even the slightest increase and I blue screened....so the bios I have is just a 6950dcuII 2gb shader unlocked bios only....KEEP IN MIND I CAN NO LONGER ACHIEVE A CLOCK SPEED HIGHER THAN 925/1350 idk why...But i crash when I set it 950/1350 when I play crysis 2. or FURMARK


ALSO if anyone knows of a website I can upload the bios too so that I dont have to personally email everyone that'd be great. thanks



All in all this card is a beast...If anyone could help me modify the bios further to allow voltage increase then there is no way this card couldnt achieve a 1000+ core and a 1400+ memory.

PS i use smartdoctor ( mixed reviews i know) but I found that i can put my clock settings at 925/1350 voltage at 1.125 and i use 20% in amd overdrive In CCC with fans at 100.
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a c 274 U Graphics card
a b Ĉ ASUS
April 2, 2011 7:13:56 PM

This topic has been closed by Mousemonkey
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