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6950 CF vs 570 SLI - Page 3  

Poll Results: According to the posted ingame/benchmark results and valid/logic facts.. who won?

 
  • 50% (64)
    AMD 6950 CF
  • 49% (62)
    GTX 570 SLI
126 Total Votes  
post #21 of 686
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post #22 of 686
The 6950/6970 have different memory on each, which are rated for more speed on the 6970, so they can handle faster timings.

Either way, 6950 is the better deal even on stock.
Edited by Stefy - 4/7/11 at 9:07am
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post #23 of 686
Quote:
Originally Posted by Kung Pow View Post
You are talking like as if we had to choose wheter to unlock the 6950 or to overclock.

I am talking about fully unlocking it and then overclocking the card like a normal 6970 to the maximum.
Just pointing out that "fully unlocking" a 6950 to a 6970 and overclocking it to the maximum will yield a mere 1-3% increase over simply overclocking the 6950 to the maximum.
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post #24 of 686
Thread Starter 
Quote:
Originally Posted by Stefy View Post
The 6950/6970 have different memory on each, which are rated for more speed on the 6970, so they can handle faster timings.
That difference in Memory Bandwidth and other small unidentities are negliable and do not create a performance difference between the 6970 and the fully unlocked 6950 as proven in the review posted by Bruce.

There is one thing I do not understand though...what is there to do in order to fully unlock the 6950 to a full blown 6970?

Is the Bios flash and increasing the shader units the same thing?
Or do they both have to be done seperately?

I posted I screen of the passage that clearly shows that by increasing the shaders and clocks of the 6950 to those of an actual 6970 delivers the exact same FPS a normal 6970 does

That proves that a normal 6950 can be fully unlocked to a 6970.
Only questions that come with that are:

1.)Is Bios flashing and increasing the shaders the same thing in the process of unlocking? or are they different and have to be done seperately?

2.)When fully unlocked will this 6950 hybrid be able to fully overclock like the normal 6970 without any heat,stability or performance disadvantages?




Quote:
Originally Posted by compudaze View Post
Just pointing out that "fully unlocking" a 6950 to a 6970 and overclocking it to the maximum will yield a mere 1-3% increase over simply overclocking the 6950 to the maximum.
This is not only about performance rather than about the fact that it is possible to fully unlock a 6950 to a 6970 meaning with all the performance, overclocking ability , stability etc of a normal 6970 without any disadvantages flaws or restrains even if it is only 5%

Still concentrate on the red questions above

Edited by Kung Pow - 4/7/11 at 9:25am
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post #25 of 686
Quote:
2.)When fully unlocked will this 6950 hybrid be able to fully overclock like the normal 6970 without any heat,stability or performance disadvantages?
No, it won't overclock as good as a 6970 at least no the memory, and that's what I'm saying.

Quote:
1.)Is Bios flashing and increasing the shaders the same thing in the process of unlocking? or are they different and have to be done seperately?
You can either do a full 6970 unlock or a shader unlock.
Edited by Stefy - 4/7/11 at 9:51am
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post #26 of 686
Thread Starter 
Quote:
Originally Posted by Stefy View Post
No, it won't overclock as good as a 6970 at least no the memory, and that's what I'm saying.


Can´t you see that there are only negligable differences in terms of memory etc?That cannot result in a overclocking difference worth mentioning? not even to mention any performance difference.

Look at grunian´s link:http://www.techpowerup.com/articles/...ng/vidcard/159

It is clearly stated and even shown if you look at the picture posted in my previous post that the 6950 once fully unlocked is an absolute equal to the 6970 in performance and overclocking ability.

Still I am not sure about that which is why I would like for grunian to approve of these two questions first:

Quote:
Originally Posted by Kung Pow View Post
1.)Is Bios flashing and increasing the shaders the same thing in the process of unlocking? or are they different and have to be done seperately?

2.)When fully unlocked will this 6950 hybrid be able to fully overclock like the normal 6970 without any heat,stability or performance disadvantages?



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post #27 of 686
Quote:
Originally Posted by Kung Pow View Post


Can´t you see that there are only negligable differences in terms of memory etc?That cannot result in a overclocking difference worth mentioning? not even to mention any performance difference.

Look at grunian´s link:http://www.techpowerup.com/articles/...ng/vidcard/159

It is clearly stated and even shown if you look at the picture posted in my previous post that the 6950 once fully unlocked is an absolute equal to the 6970 in performance and overclocking ability.

Still I am not sure about that which is why I would like for grunian to approve of these two questions first:
I'd advice you to just have a read:

http://www.techimo.com/forum/graphic...lash-info.html

http://www.overclock.net/ati/919230-...ed-damage.html

Quote:
With about 99% certainty, the consensus is that the 6970 BIOS has different memory timings, which can cause many problems on a 6950 card.
It is not the same card, I could repeat that a hundred billion times.

Obviously these cards are dying for some reason, which is why I'm telling you than it's not a 6970.

However, the chance of your card dying is very small.
Edited by Stefy - 4/7/11 at 10:14am
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post #28 of 686
Quote:
Originally Posted by Kung Pow View Post
So let´s sum it up again.

An AMD 6950 has the ability to be unlocked to a full AMD 6970 without any disadvantages or flaws coming with that upgrade.
That means architecturewise and performancewise it will be completely equal to a full AMD 6970.

Also overclocking and stability will not be affected in any negative way by this upgrade and will behave just like they would with a normal AMD 6970.

That should work with any AMD 6950 regardless if it is reference or non reference design
Well it depends on why they sold them as a reduced card.

Either not quite up to standard, or just that its easier to just make 1 group of chips and then turn off part of it and sell it as the lower priced 6950

The real 6970 has more power connectors for a reason, so that affects stuff.

The VRAM on the 6970 has different timings and even different voltage I think, so it has higher performance VRAM chips.

There is talk of non-ref. 6950s having part of the chip/or its internal connections cut off with lasers, so only a rocket appliances could fix it. But also like on my non-ref card, there's no 2nd BIOS, I'm afraid to mess with that even though I have a 8x/8x MB and a 5670. In my case, if something went wrong, it would take another 2-3 months to save up again.



I think the safest thing to do is use the modded 6950 BIOS that just unlocks the dormant shaders, then OC it. That way the VRAM timings, etc... don't get changed. But best of luck to those that flashed theirs to a full 6970 BIOS.
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post #29 of 686
Quote:
Originally Posted by stefy View Post
powercolor pcs+ comes with the unlocked 6970 bios allready installed
nice
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post #30 of 686
Thread Starter 
Quote:
Originally Posted by Mit Namso View Post
Well it depends on why they sold them as a reduced card.

Either not quite up to standard, or just that its easier to just make 1 group of chips and then turn off part of it and sell it as the lower priced 6950

The real 6970 has more power connectors for a reason, so that affects stuff.

The VRAM on the 6970 has different timings and even different voltage I think, so it has higher performance VRAM chips.

There is talk of non-ref. 6950s having part of the chip/or its internal connections cut off with lasers, so only a rocket appliances could fix it. But also like on my non-ref card, there's no 2nd BIOS, I'm afraid to mess with that even though I have a 8x/8x MB and a 5670. In my case, if something went wrong, it would take another 2-3 months to save up again.



I think the safest thing to do is use the modded 6950 BIOS that just unlocks the dormant shaders, then OC it. That way the VRAM timings, etc... don't get changed. But best of luck to those that flashed theirs to a full 6970 BIOS.
Ahaa!

So there are two different types of the unlock.

Type 1.)Just a Shader increase to 1536 units
Type 2.)Full Bios Flash which applies all 6970 settings including timings etc

What performance difference ist there between a 6950 with only a type 1 unlock and a 6950 with a full unlock meaning Type 1 and Type 2?

As you can see in that picture the 6950´s shaders were increased and then the clocks were altered to those of a 6970´s that resulted in the same FPS/performance in COD Black Ops the 6970 achieved.

So what gain would there be from a full BIOS 6970 bios flash if the performance is already achieved by a shader increase (type 1 unlock) and overclock to stock 6970 speeds?

I can see how a 6950 gets unstable if it is fully flashed to 6970 settings and the timings that are used for the RAM are incorrect?

It would be cool if that could be explained.
Also even though minor things like timings and Memory Bandwidth differ I still believe that a 6950 Type 1 unlocked can still achieve exactly equal 6970 performance even at max oc ..don´t you think?
Edited by Kung Pow - 4/7/11 at 2:03pm
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