Hey, I just got a XFX dual fan 1gb 6870 and I am only able to push the OC to about 965mhz Core and 1230mhz Memory, I like where my memory clock is but I would like to push my core higher since at full load I am at 61 C, but the only problem is I cant increase my voltage. I am using MSI Afterburner and I have done everything I can to unlock voltage control and it wont let me, I really would like to see this cards potential.