Twin Frozr III Crossfire Mixing (locked / unlocked)

DiscreetCat

Distinguished
Apr 1, 2006
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I have a MSI 6950 TF3 (serial July 2011) on which the shaders unlock to 6970.

I just bought a second hand card on which the clock unlocks but the shaders don't. A laser cut card I guess

If I mix the two cards in crossfire, what happens - does the unlocked card step down to 6950 and, if so, is that just the shader performance? If I OC both cards does it really matter? Any other problem?

I have the chance to buy another card with a Feb 2011 serial. Does that make the card definitely unlockable or where some cards laser cut back then too?
 

thdarkshadow

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Feb 6, 2013
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Twin frozr 3? I think there is just twin frozr 2 but whatever. Yes they will crossfire and they will run at the highest common speed. So the more powerful will down clock itself till it is equal to the lesser.
If you overclock the locked 6950 it should even it up and give better performance.

Idk about which 6950s can be unlocked or if its just random