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Unlocked 6950's?

j0sh

j0sh

j0sh

Associate
Joined
1 May 2011
Posts
100
Location
Southport
For unlocked 6950's (In CF to 6970's)
How powerful a PSU would I need? I'm thinking of getting just one (and unlocking it) and possibly adding one at a later date

Josh
 
Don't unlock them to 6970's, just get the shaders mod and then overclock with MSIAB. Lots of cards dieing after 2 weeks with the full unlock, the memory timings iirc.

750w+ psu I would imagine for a crossfire setup.
 
Nigel014 said:
Don't unlock them to 6970's, just get the shaders mod and then overclock with MSIAB. Lots of cards dieing after 2 weeks with the full unlock, the memory timings iirc.

750w+ psu I would imagine for a crossfire setup.
Click to expand...
How does the shader unlock + overclock differ from "full" unlock.

Surely if they are clocked, they are clocked, regardless of how they are clocked.
 
6950s flashed to 6970s, so are they safe or what? I just bought one from the MM and hes been using it flashed to 6970 for a few months now.

Any precautions I should take?
 
Nigel014 said:
Don't unlock them to 6970's, just get the shaders mod and then overclock with MSIAB. Lots of cards dieing after 2 weeks with the full unlock, the memory timings iirc.

750w+ psu I would imagine for a crossfire setup.
Click to expand...

Where have you seen info on lots of cards dieing after 2 weeks ?
 
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Even if the timings were different (which of course they will be, as they use slower RAM), that would only result in crashing and instability, not card death.

Muchlike tightening your RAM timings beyond that which they are designed for at a given speed. You don't kill your RAM, you just end up with an unbootable/unstable system.
 
paradigm said:
Even if the timings were different (which of course they will be, as they use slower RAM), that would only result in crashing and instability, not card death.

Muchlike tightening your RAM timings beyond that which they are designed for at a given speed. You don't kill your RAM, you just end up with an unbootable/unstable system.
Click to expand...

I'm was only repeating what I read in that thread.
 
Are the 6950 and 6970 PCB's and components identical? I don't think they are so quite likely that trying to run a 6950 with a 6970 BIOS would cause problems. Just unlocking the shaders however would be less stressful I imagine...
 
Troezar said:
Are the 6950 and 6970 PCB's and components identical? I don't think they are so quite likely that trying to run a 6950 with a 6970 BIOS would cause problems. Just unlocking the shaders however would be less stressful I imagine...
Click to expand...

The RAM chips are slower with more lax timings on the 6950, and there is a slight difference in the power regulation circuitry. Other than that, assuming reference cards, they are the same. You do however need to up the "power" setting in CCC to +20% to allow for stability of an unlocked 6950.

"Stress" isn't really the right word, as if it runs, it will be fine. Its voltage that kills chips (both CPU/GPU and RAM), not pure clockspeed.
 
Right okay, even though my thread was hijacked ;) thanks for the help I think I'll go for the modular XFX one, modular should make cable tidying easier
Thanks again
 
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