I was lucky too. My G1 is stable @ 1500+/8000, no coil whine and only audible over 60% fan speed. On auto fan profile it doesn't go over 65%. ASIC is 69.6%. Solid upgrade over the previous 780 ti.
A little update to my situation. It seems my original G1 started getting a little flaky at the speeds I was running. I thought it was stable at 1500mhz then it started to get random crashes, locks etc which made me back it down to 1430mhz and +80mv. The coil whine that didnt bother me at first started getting a little irritating. Well, I called Newegg yesterday around 12 pm and explained the issue to them. Fedex dropped my replacement G1 of at my door at 9am this morning! Installed and the first thing I did was check the ASIC which reads 78. Big improvement from my last card, so far so good. Went into AB and went straight for 150+ core and 400+ mem for a 1560mhz OC while flawlessly running Valley, Heaven, Firestrike Extreme and then Crysis3. Didnt even touch the voltage. I wonder if the current batch of cards have stabilized and are better now. Coil whine is also virtually non existant on this one. Thoroughly pleased with this one and also NE for the outstanding service.Off to UPS to drop of my old RMAed card.
PS..Was tempted to SLI them for shits and giggles but decided not to tease myself.