Sorry, that video only shows that a high-end system, pulling over 500 watts, can get noisy. We don't know how much of that was caused by system fans, or the radiator fans, or the GPU fans.Yes I have.
put them both on a test bench and test noise the blower fan is about 15 DB louder.
But put them both in a case its only 5 db louder.
See the fan speed on the 3 fan increases so closing the gap.
No such problem using a blower fan gpu
(I rest my case)
proven move along.
On the other hand, I also have first hand impressions with blower type reference cards: I have "upgraded" my HD 5850 (single fan Sapphire) to an HD6870 (reference card with blower), as I have found a good deal, and I thought I couldn't miss it. The noise level difference was very noticeable, and not in favor of the newer, blower-type card. With undervolt, I have managed to tame it somewhat, but as soon as 7850 was out, I have happily swapped it.
The main problem with blower-type cards (in my opinion) is the heat dissipation area: with the usual designs (followed by the 5700XT reference card for instance), you usually need to share the surface of the card between the fins and and fan, which inevitably leaves much less area for the fin stack.
You could try to circumvent that by creating a really long card, where you cover the whole surface area with fins and pipes and then put the blower fan behind all that, but with with top end cards, which tend to have large PCBs, that wouldn't work very well (with something small like the fury x, it actually could!).
The traditional "top down" (from PCB perspective) design simply leaves much more room for dissipation area, as you can simply stack that with however many fans you feel fine with, positioned on top.
And then there are the other niceities, like cooling components and the PCB itself is easier with the top down design, and that if you increase the number of lamelles in the blower cooler to compensate for the smaller dissipation area, it becomes very dense, and therefore difficult to push air through it, which in return would require a larger fan (difficult to manage with a blower, another limitation, simply because of the form factor), or a stronger motor with higher RPM (it is no coincidence that blower fan coolers usually operate at higher RPMs).
So, all in all, I am happy that AMD decided not to go with a blower fan design