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6950 CF vs 570 SLI - Page 4  

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 #31 of 686
I'm short on time atm so I'll come back later, but to answer one of your question.

Yes, the 6950 + shader unlock + overclock is perfectly capable of reaching 6970 speeds and beyond.

Flashing the card changes memory timings, voltage and so on, basically making it more like a 6970 than any overclocking would be capable of. As mentioned earlier, you would gain a little more performance by flashing it (1-3%), but can potentially damage your card over time. Unlock shader + OC is safer and the loss in performance really isn't noticable.

However, I don't see how all this is related to 570 SLI vs 6950 CF. I think we mostly agree 6950 CF is the better buy whether you unlock or not.
Edited by Stefy - 4/7/11 at 11:10am
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post #32 of 686
Thread Starter 
Quote:
Originally Posted by Kung Pow View Post
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?
Let me clearify for the last time

Type 1 unlock: Shader increase + stock clocks of 6970 oc
Type 2 unlock: Bios flash

A 6950 with just the Shader increase unlock with the stock clocks of a 6970 would be only 1-3% worse than a real 6970 in performance?

Judging by my picture posted earlier both the 6950 Type 1 unlocked 6950 and the stock 6970 achieved the exact same amount of FPS in Call of Duty Black Ops.
Which means to me that they are equal performancewise ..even if the 6970 has a little more Memory Bandwidth and lower timings etc ...the performance is still not influenced to its advantage since both cards are achieving the exact same FPS.

1.)So does that mean a 6950 Type 1 unlock can have the same performance level as a 6970 stock and from there on be overclocked just like one too with again the same performance results?

2.)Are you really certain that a Type 2 unlock so a full Bios Flash only provides 1-3% more performance?
If instabilities would occur one could just switch to the second BIOS and boot right?




All these 6950 talk is driven by my desire for the best gpu solution in the 720$ range.
And since two 6950´s when unlocked easily beat a 570 SLI setup and are even a lot cheaper I am choosing them
Type 1 unlocked they even reach 6990 performance which is really really great for just this minimal price^^

How will the Type 1 unlocked 6950 CF setup compete against my previous GTX 295 Quad setup?
Will I notice a difference in performance?
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post #33 of 686
I have owned a GTX 570 and to be honest it doesn't feel like you'r s aroundgetting the most for your money. An HD 6950 with 2Gb of VRAM to make it unlockable i $275 and AMD's 6000 series scale great. Also, an HD 6970 beats a GTX 570 in a lot of tests. Also, it is said that the drivers are holding the card like 10% back from optimum performance.
post #34 of 686
Thread Starter 
Quote:
Originally Posted by Kung Pow View Post
Let me clearify for the last time

Type 1 unlock: Shader increase + stock clocks of 6970 oc
Type 2 unlock: Bios flash

A 6950 with just the Shader increase unlock with the stock clocks of a 6970 would be only 1-3% worse than a real 6970 in performance?

Judging by my picture posted earlier both the 6950 Type 1 unlocked 6950 and the stock 6970 achieved the exact same amount of FPS in Call of Duty Black Ops.
Which means to me that they are equal performancewise ..even if the 6970 has a little more Memory Bandwidth and lower timings etc ...the performance is still not influenced to its advantage since both cards are achieving the exact same FPS.

1.)So does that mean a 6950 Type 1 unlock can have the same performance level as a 6970 stock and from there on be overclocked just like one too with again the same performance results?

2.)Are you really certain that a Type 2 unlock so a full Bios Flash only provides 1-3% more performance?
If instabilities would occur one could just switch to the second BIOS and boot right?




All these 6950 talk is driven by my desire for the best gpu solution in the 720$ range.
And since two 6950´s when unlocked easily beat a 570 SLI setup and are even a lot cheaper I am choosing them
Type 1 unlocked they even reach 6990 performance which is really really great for just this minimal price^^

How will the Type 1 unlocked 6950 CF setup compete against my previous GTX 295 Quad setup?
Will I notice a difference in performance?
Yes I am now well aware of the GTX 570´s inferiority to the AMD 6950 and honestly CUDA and Physx which no game except Mafia 2 really takes advantage of are no factors to make me decide otherwhise.

Right now I would love my Quote to be answered
Nothing can keep up with an unlocked 6950 CF setup except 580 SLI but for the money it is just insane what you get!!!!
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post #35 of 686
Quote:
1.)So does that mean a 6950 Type 1 unlock can have the same performance level as a 6970 stock and from there on be overclocked just like one too with again the same performance results?
This has been answered before. The 6950 is not a 6970, therefore you can't expect getting the same overclocking potential when at 6970 stock clocks. You might get close though.

Quote:
2.)Are you really certain that a Type 2 unlock so a full Bios Flash only provides 1-3% more performance?
If instabilities would occur one could just switch to the second BIOS and boot right?
Yes, I'm pretty sure. Yes, you can hit the BIOS switch, but you may also have caused permanent damage to your card without knowing even thought the card is "seemingly" working fine.

Quote:
How will the Type 1 unlocked 6950 CF setup compete against my previous GTX 295 Quad setup?
Will I notice a difference in performance?
I don't have any up to date benchmarks on this so I'll let someone else answer.
Edited by Stefy - 4/7/11 at 3:35pm
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post #36 of 686
Thread Starter 
Alright then.

Just two little more then it is settled.

1.)How much % of performance are gained with the Type 1 unlock (shader increase + 6970 stock clocks)?

2.)Is there anything more powerful than a unlocked 6950 CF setup at that price range?

2.a.)I am sure you know the Nvidia Profile Tool to basically add SLI support to any game even if there isn´t a profile out yet ...does the same thing exist for AMD too? If so then my decision is clear.
2.b.)Which 6950 is the best overclocker and runs the most stable with the unlock?

Edit:Here the ones available to me:http://www.ditech.at/search.do?searc...n=herstellerNR

http://geizhals.at/eu/?cat=gra16_512&asuch=6950&sort=p
Edited by Kung Pow - 4/7/11 at 3:42pm
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post #37 of 686
Quote:
Originally Posted by Kung Pow View Post
Alright then.

Just two little more then it is settled.

1.)How much % of performance are gained with the Type 1 unlock (shader increase + 6970 stock clocks)?

2.)Is there anything more powerful than a unlocked 6950 CF setup at that price range?

2.a.)I am sure you know the Nvidia Profile Tool to basically add SLI support to any game even if there isn´t a profile out yet ...does the same thing exist for AMD too? If so then my decision is clear.
2.b.)Which 6950 is the best overclocker and runs the most stable with the unlock?

Edit:Here the ones available to me:http://www.ditech.at/search.do?searc...n=herstellerNR

http://geizhals.at/eu/?cat=gra16_512&asuch=6950&sort=p
1.) You can expect pretty much 6970 speeds, probably marginally slower. Won't be noticable. You can look here for numbers: http://www.overclockers.com/powercol...50-pcs-review/

2.) Currently, no.

2a.) http://sites.amd.com/us/game/downloa...-profiles.aspx

2b.) Shader unlock is pretty much risk free, so you won't be having issues with that. 6970 flash however, may not run stable for everyone. Mostly comes down to your spesific card. Any reference (+ PCS++) 2GB will unlock, 99% sure. There are reports of the Twin Frozr III unlocking as well. I don't have any proper overview on what cards, but the Twin Frozr III is probably the best overclocker, judging from its cooling capabilities. It's a bit more expensive though.

You might also be interested in the Sapphire FleX http://www.tweaktown.com/articles/37...0/index14.html
Edited by Stefy - 4/7/11 at 4:37pm
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post #38 of 686
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post #39 of 686
i think for now the HD 6950 CFX wins over the 570s because of superior amount of VRAM, something that matters at high resolution, which you should use when looking at two high end cards anyway.
GTX 560 might be comparable to 6950 1 GB, but the 6950 would still beat it. i'd say the 560 is between 6870 and 6950.
for now just go 6950s if you feel comfortable putting up with possible bugs and such from amd catalyst. otherwise if u want the smooth but slower experience with nvidia try 570s.
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post #40 of 686
Thread Starter 
Quote:
Originally Posted by Stefy View Post
1.) You can expect pretty much 6970 speeds, probably marginally slower. Won't be noticable. You can look here for numbers: http://www.overclockers.com/powercol...50-pcs-review/

2.) Currently, no.

2a.) http://sites.amd.com/us/game/downloa...-profiles.aspx

2b.) Shader unlock is pretty much risk free, so you won't be having issues with that. 6970 flash however, may not run stable for everyone. Mostly comes down to your spesific card. Any reference (+ PCS++) 2GB will unlock, 99% sure. There are reports of the Twin Frozr III unlocking as well. I don't have any proper overview on what cards, but the Twin Frozr III is probably the best overclocker, judging from its cooling capabilities. It's a bit more expensive though.

You might also be interested in the Sapphire FleX http://www.tweaktown.com/articles/37...0/index14.html

So you are saying that the Shader unlock will work with any 6950 reference or non reference.

But the full 6970 unlock will only work with the reference design and the two other non reference ones you mentioned?

I looked around a bit and gathered some information of which card I will get:
I will not try to engage the full 6970 unlock because the 1-3% are ridiculous considering that my card might be damaged.

So if you confirm that the Shader unlock will work with any 6950 regardless of reference or non reference my options increase dramatically.

Because I want to overclock the hell out of the card I want it to have good cooling..another reason why reference design won´t be any good in my case.

Here my first retailer: http://geizhals.at/eu/?cat=gra16_512&asuch=6950&sort=p (scroll down)

Here the second: http://www.ditech.at/search.do?searc...n=herstellerNR

What do you think ? do I have a good selection here? Which one of the cards in the links would you pick to have max oc , good cooling and shader unlock?
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