I found that the initial whining noise that came out of my classify was not actually from the fan, but I do have a slight fan rattle as well. The fan rattle an only be heard if I put my head closer to my comp, but can not be heard over the other comp fans. The whining may be a form of coil whine. It is not the same sound which is produced when the frames per second of a game go in the hundreds or thousands. It is extremely loud, very annoying, high pitched, and can be easily be heard through headphones.

a1solarnova

Is the whining a different sound compared to the humming/whining in the vid i posted ?
you will likely needo t listen to it through headphones as its hard to hear properly through speakers.

 
If the sound is difficult to hear despite the low quality recording device, then it's not the same noise my classify makes. That sound can bleed an eardrum over a short period of time and can easily be heard over whatever sound is being played on headphones unless a person is listening at deafening volume.

Hi,
 
I can confirm that I have raised your forums posts to our product management team for further review. Please contact me directly with your registered serial number if you do want to setup a RMA on your product and I will assist you. chrisb@evga.com 

Any chance for update to GTX 770 SC with ACX ?

my gtx 770 part number 02G-P4-2773-KR also makes the rattiing sound at 50 or 51 fan speed but goes away at 54.

I have the quoted part number GTX 780 ACX with this fan noise at 78% fan speed
I have RMA'd it and received the replacement today so will check it this evening.
 
BUT the RMA isn't a new replacement. Came in a brown box.
 
So will your update sort out my fan noise?
If so I may keep my NEW one as opposed a possible refurbishment.

The 'Ticket' was raised within 30 days regarding another aspect of the card and the noise related RMA just outside the 30 days but within the same ticket.  I didn't recognise the noise as a GPU issue and was replacing the PSU ( a Seasonic Platinum 860W) twice over before this thread and others pointed me to the ACX cooler being the cause.
 
 
Update on the RMA --> worse than the existing card. ACX 'screeching' was not as loud but it was more prolonged and over TWO specific points; 1. the idle/start range and 2. at around 73-79% rpm.
 
Sending RMA back until at last they send a tested but noise free one.

Lol, the noise is rather annoying. I listened to your's a1solarnova and mine sounds a little different. More annoying I guess you can say. What sucks is it will do it at lower rpms. When I say lower I mean below 80% ran speed -_-

I can live with a refurb if noise free :)
May be I'll just to my original card with a custom fan profile to skip past the noisy range

If anyone has any questions regarding fan noise AFTER you apply Jacob's update please contact EVGA Tech support.

How do i see ifg the update was successful? the window closes so quickly. What BIOS VErsion should i have after the update?
I bought a new card, after my first card had issues, but now the new card is occasionally making the same noises again... not as bad as my first card, but its annoying. Especially for such a high priced card.
 

Is this the 80.10.3a.00.81?

Wow I'm pretty surprised to here this.  I got my GTX 760 ACX and I have to turn the fans all the way up to 85% before they are even considered audible...  I hope you get this fixed it is a really great cooler and IMO competes with the TF3 and DCUII coolers....

Yeah... that "update" didn't fix a damn thing unless you consider lowering the minimum fan speed to 29% from 39% a fix... 
 
Very disappointed in my 780 w/ ACX cooler -- $800 for a card I'll have to RMA after 3 weeks usage. Sweet.

EVGA_JacobF

For those of you experiencing this and have part number: 03G-P4-2784-KR, please install the following update:

http://cdn.evga.com/bios/2784_Update.zip

To install, extract and run update.exe

For those with part number 03G-P4-3788-KR, please switch to secondary BIOS.

 
i never had any issues with my fans yet ( just got the card a few days ago) i updated to this anyways. i noticed that the min fan speed cap is now 29% when before fan speed wound never go under 39%  i also think it now goes to 100% forgot where it capped at before. think 85% 
 
either way, is this the only change to the bios? or whatever this update was? also where can i revert back to my stock bios that i had before (running 03G-P4-2784-KR) :) thanks