So I've recently done a build refresh, switching from an EVGA 750 P2 to a 650 GM and retaining my GTX 1080 Ti. In the new build, I'm getting quite a loud, buzz-like, coil whine with the GM. I'm certain that it is coming from the power supply - using some rolled up sheets of paper and holding them to my ear, it is easy to tell that the sound is coming from within the supply's housing. As far as I can tell, the buzz is related to the circuit that supplies my GPU with its 6pin+8pin power connectors - the PSU has support for two sets, and the issue is the same regardless of whether I've got the 1080 Ti connected to the GPU1 or GPU2 channel.
The buzz coincides with GPU current draw; in "heavy hitting" games like Quake Champions or The Witcher 3, it is immediately apparent When the game finishes launching. In games that provide me with an FPS cap slider to work with, I've noticed that the frequency of the buzz varies proportionally to the FPS cap when I have vsync off. When the engine is not rendering during loading screens, the buzz immediately stops, and starts up again when back in-engine (this can happen multiple times during a single static loading screen depending on whether the game in question stops/starts rendering multiple times in a load.) If I reduce in-game graphics quality to extremely low image quality settings, the buzz disappears as the card is no longer asking for significant current from the supply. I've got a spare 1050 Ti on hand (there are no 6- or 8-pin power connectors on this one) and I can't convince the power supply to make a peep when this GPU is swapped into the system.
I've been building and refreshing computers for literal decades, and I'm definitely no stranger to capacitor whine from graphics cards or power supplies, but this is the first time I've experienced a whine this severe and distracting. This brings me to my whole reason for posting - does anyone else have a similar graphics card pairing with a 650 GM, and if so have you had a similar issue? Others' experience with this pairing will help me decide whether I can reasonably expect an RMA replacement to solve this problem.
Edit: Looks like I don't have a high enough postcount to link a YouTube video of the issue, so if you would to hear it check out video ID "9cy2xRJCdGU"
post edited by CasbahBoy - 2019/01/12 18:30:57