Do you have stand-alone computer speakers or headphones? I didn't see them in the video.
Do you play your games without sound / music on? I listened to the video and I mostly heard fan noise with very small amount of choke whine when you move in the mic this close. However, if you close the case and play actual games with volume turned up, how can you even hear that?
Other cases of users posting coil whine I've heard are real mechanical frequency noise that's actually annoying.
That makes no sense. The Sapphire DX is AMD reference design but it has added 1 more VRM for memory. The coil whine/choke whine is related to the traditional core choke design. Any GPU in the world, whether NV, AMD, ATI, Matrox could have coil whine if is uses standard chokes. Going with a reference design chances nothing. To guarantee no coil whine, you have to get a card with after-market chokes.
Really the only way to 99% guarantee you get none is to go for a card that has Super Allow style chokes (like Asus DCUII) or has high-end after-market chokes like Vapor-X, MSI Lightning editions or similar.
But it seems even the after-market chokes differ in selection between GPU makers:
"While overclocked, the MSI GTX 660 Ti PE temperature increased to 77 degrees Celsius, but the fans did have a noticeable increase their speed. We also observed some coil whine coming from the card, especially when overclocked when some games were at their intro and loading screens and the observed frame rate was over several hundred frames per second." ~
HardOCP
That's 100% false. There are no special components on the reference Galaxy cards, at all. Galaxy reference boards are identical in component selection to any other reference GTX670/680 reference card. None of those designs use after-market chokes. The Galaxy cards that do use after-market chokes are
non-reference design Dual-Fan editions with Blue PCB.
As far as Galaxy GTX680 White Edition you had, that card has no special chokes at all. If you didn't have coil whine on it, that's just luck of the draw but Galaxy didn't go out of its way to install after-market chokes on the board.
^ Those are exactly the same as many reference designs cards have like the Sapphire 7970
If you don't want coil whine, you
have to get a non-reference board. With any NV or AMD reference board, you get standard chokes, which means
coil whine lottery.