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Gtx 560 ti vs HD 6950 UNLOCKED Cfx, overclocking unlocked 6950?

post #1 of 18
Thread Starter 
Now, im currently using 2x gtx 560 ti in sli config, but i am considering switching to two 6950s, and then flashing them to 6970s? Is this still doable?

And how will the performance increase/decrease be?

After that ill be adding 2x waterblocks for the unlocked 6950s - how far will i approx. be able to push them in terms of core/memory? Do the overclock worse than the standard 6970s?

My gtx 560 ti's can overclock to approx 965 mhz on core. Will the unlocked 6950s overclocked to the limit offer better performance, or should i not bother? The cost can pretty much be covered by selling the nvidia cards, so it's not that important.

appreciate it
    
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post #2 of 18
It is possible. The 6950 is roughly 10% faster at 1080/1200p but anyway, you should just stick to the GTX 560s. The performance increase isn't worth the price difference (you'll get less selling your 560s) and the hassle. The memory should do 1425-1450MHz since all the ones I've had have done this. The core generally went to 900ish for me on stock voltage, and 1020 - 1035 on the core with extra voltage (varied between the 3 I had).

In short don't bother =)
    
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post #3 of 18
Thread Starter 
The biggest reason im selling them is, that the screws to replace the heatsink to a water block are simply unremoveable So i basically need new cards .. I just need to find some that'll be better and not to pricey

And i can sell the cards at the same price as the 6950, maybe with a minus 40 $ So it's not too bad
    
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post #4 of 18
I guess if you have to then go for it. The 6950s would be good under water too.
    
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post #5 of 18
Quote:
Originally Posted by Razi3l View Post
It is possible. The 6950 is roughly 10% faster at 1080/1200p but anyway, you should just stick to the GTX 560s. The performance increase isn't worth the price difference (you'll get less selling your 560s) and the hassle. The memory should do 1425-1450MHz since all the ones I've had have done this. The core generally went to 900ish for me on stock voltage, and 1020 - 1035 on the core with extra voltage (varied between the 3 I had).

In short don't bother =)
Pretty much. 6950 CF is superior to 560 SLI though. Faster cards in general and better scaling. Don't forget the 2GB VRAM. 6950 CF even beats 570 SLI quite a few times at stock. Unlocking shaders and then overclocking to 6970 speeds is very much doable. (I wouldn't flash simply because of the risks involved).
Edited by Stefy - 5/21/11 at 4:27am
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post #6 of 18
The 6950s aren't worth it over the 560Ti's, they're hardly any faster however I wouldn't touch those screws on the 560s either. I wouldn't bother getting the 6950s though.
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post #7 of 18
Hardly any faster?







Ah, that was the 570. Anyway, the 560 stil draws more power.


Edited by Stefy - 5/21/11 at 5:16am
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post #8 of 18
Thread Starter 
oooooh Stefy the must have gene is kicking in ! Think what it'll do underwater with a nice OC
    
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post #9 of 18
Quote:
Originally Posted by Levis2 View Post
oooooh Stefy the must have gene is kicking in ! Think what it'll do underwater with a nice OC
Yes, 6950 CF has a lot of potential. Recent drivers have improved performance significantly, so you can expect them to perform even better. Not saying 5xx series didn't get improvements, but at launch the 69xx cards were held back by their drivers, more than the 5xx series. So expect the performance increase to be bigger on the 69xx cards.
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post #10 of 18
Thread Starter 
But will the fact that the 6950 unlocked card only has 2x 6 pin power connectors limit my oc capabilities? I'm planning on reaching something like 970-1000 mhz on the core... But i've read that you can't tweak the voltages anywhere?
    
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