Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.
wow that must be about 5/6 that are being returned now, did you try limiting the fan with afterbuner?
Try this curve I posted in the 460 thread,
erm 470's will be even louder than 460's though? i'd do some reading up asap if i was you.
you can actually return a GPU based on the noise?
didn't know that, in America yes where they are (overly) protected but not the UK
What did you limit the fan to?, because up to 50% the fan is practically silent, if your cards are still in your system try that curve out at least and hit 'user defined', playing regular games with that is fine noise wise on my system.
Just out of interest while your card is on load are you looking for absolute silence?
Well I've ran mine @ 850mhz core yesterday for hours in furmark with the card @ 92c and fan limited, didn't have any issues in terms of stability so they can at least take the heat, system temp only jumped up a few degrees, most games though won't push the card that high, of the games I've tried so far the card has hit between 60-80c max temps.
With regards to noise if your looking for close to silence @ load then yeah maybe this particular card isn't for you, like you say water cooling will archive close to that but I'm guessing if your considering the 470's as an alternative your going to need a pretty decent water loop as they get pretty toasty on load.
2x470's @ £520 + 2 x 470 water blocks @ £120 your already looking @ £640, plus any upgrades you need to do on your loop.
If the noise is really an issue then it could be worth getting a refund and waiting for some 460's that have better cooling on them.
Another way of looking at it:
GTX 460 (potential to clock to 900+ on the core) @ £187 vs GTX 470 @ £235 + louder, hotter, uses more power, makes the 460 a no-brainer to someone like me who doesn't want the not inconsiderable hassle and expense of water cooling.