it seems that there are some 3870 cores which cannot run properly above 800mhz... mine are both referance HIS cards and seem fine in crysis at 830mhz core and 2200-2300mhz mem...
interesting....
I can't at all run 2300 mem... and core seems to max at 820Mhz.
Don't know if these powercolor just OC like crap or i got a bad one :O
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