Quoting Barton George:

> We are definitely looking into the coil whine issue, this has senior management visibility, and pursuing several avenues for the current system as well as solutions going forward.

Source: http://en.community.dell.com/techcenter/os-applications/f/46...

That is from June, this is the latest from December:

http://en.community.dell.com/techcenter/os-applications/f/46...

A motherboard change and a BIOS update (2.4.2) are supposed to lower the noise as much as they can, while still deeming it "working within specification". Users report the 2.4.2 update didn't help much or even made it worse.

This update (without motherboard change) did help by making the fans run less often, which doesn't seem to be causing overheating issues or me

Like many others, I was told by their Twitter people that coil whine on my 9560 was "not a known issue per se" and that I just needed to update my BIOS.

I won't be buying a Dell next time.

They've also stated (I think it was a different model) that they deem it acceptable in normal/average (i.e. noisy) office environments with aircon etc. Therefore if you can hear it, the problem is that your environment isn't noisy enough to drown it out !

So glad I am not the only one with that issue on my 9560. I also found out that if I put CPU under stress, the whine goes away. So when I am using the adapter, I run HeavyLoad on 3 cores and that takes whine away, with enough computing power for happy compiling.

And an awful touch pad?