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unlocking 6950 2 6pins enough power?

post #1 of 8
Thread Starter 
ok, i said i wouldnt do this until i really needed a performance bump (which i do not need atm), but i want to push my 6950 a bit.

I am thinking of flashing to a 6970 bios, but a 6970 uses a 6 pin and an 8 pin power connector, while a 6950 only has 2 6 pin connectors. If i unlock it to a 6970 what are the risks?
post #2 of 8
It is plenty of power, I unlocked mine and overclocked them to 950/1450 with 0 issues. If it is too worry-some you could always solder an 8 pin onto it and remove the 6 pin as they have the same pcb board.
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post #3 of 8
Dont think there is any risk involving power from the PCI-E cables.

You have a risk that it wont run stable once flashed due to alot higher memory clocks.
If you are affraid of that you can also just flash it to unlocked shaders with standard clocks and voltage. Then you can overclock the card yourself.

I tryed full unlock to 6970 first but 1 card couldnt handle the memory clock. Now i just got unlocked shaders and the cards clocked at 965/1250
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post #4 of 8
Same PSU and card, no problems here.
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post #5 of 8
Thread Starter 
Quote:
Originally Posted by Farih View Post
If you are affraid of that you can also just flash it to unlocked shaders with standard clocks and voltage.
will there still be a significant performance increase if i just unlock the shaders and dont touch the clocks?
post #6 of 8
Quote:
Originally Posted by Dom-inator View Post
will there still be a significant performance increase if i just unlock the shaders and dont touch the clocks?
Not really ~ 3-5%
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post #7 of 8
Quote:
Originally Posted by Dom-inator View Post
will there still be a significant performance increase if i just unlock the shaders and dont touch the clocks?
No, Just like he sayed above me.. 3-5%

But you have a good base to start your overclock.
I got mine running 965/1250 now wich is faster then full unlocked 6950's at 880/1325mhz.

I would just try a full unlock, if it doesnt work you can always change it again to just a shader unlock.

Most people seem to be just fine with a full unlock, i just have bad luck that 1 card cant handle the memory frequency
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post #8 of 8
My 6950 is absolutely fine with a shader unlock (not 6970 bios) and 950/1350 clocks.

I don't see how an 8-pin could magically draw more power than a 6-pin - the wires, I'm sure, are rated to pull more amps than the card can pull anyway, so in my mind it makes no difference.

Don't take it as gospel though, but that's what my low-level knowledge of electronics tells me until I'm proved wrong.
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