@ megamind
Exactly. Both are better options than 6950 1gb. Op should go for 560-ti here. Overclocking potential of sapphire 69501gb is bad.
You sure about it??? Check this:-
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At those clocks the sapphire 6950 1gb will beat the pants out of any 560Ti on the earth.
At stock voltage, TFIII clocks are easily achievable without much effect on temps. Even then it would beat the 560Ti eyes closed.