I recently OC´d my card to see what can handle. I used Valley 1,0 for benchmarking and I archived on my first attempt 1518Mhz/+495Mhz at 18mV and on the second 1549Mhz/+495Mhz at 25mV. When I try to get higher than 25mV the card starts to indice a very noisy coil whine at mightly scary levels (I´m assuming that is normal). Otherwise the card handle a very decent coil whine above 25mV. I think are pretty good results, what you think guys?