It has its benefits but I would not go for external DAC+AMP unless I knew I want better sounding passive speakers. If someone would like to help me out here and grab some rubber grommets and please post results here, I'm very curious if this is a fluke or a repeatable fix to the annoying issue of coil whine.Ĭlick to expand.The only argument for external card is to avoid coil whine and other EM noise inside PC, which is mostly not audible (frequency is too high).
My theory is the grommets dampen the entire GPU and reduces the coil vibrations vs having the GPU hard mounted to a metal case. I opened my case, and even with 100% GPU usage, coil-whine was minimum at best. I turned all the fans off and still no whine. Here's the best part though, last night, I was gaming with my fans turned low and using speakers (usually I game with headphones due to the coil-whine) and I realized there wasn't any coil whine anymore. Pkg of 24 - Black SBR Rubber Push-in Grommet - Inner Diameter 1/8", Outer Diameter 11/32", Fits Panel Hole 1/4", Fits Panel Thickness 1/16": : Industrial & Scientific Sure enough, all the buzzing has stopped! My theory was that the frequency from the vibrations of these coils was being transferred through the metal case / PCI-E brackets to the sound card so I bought some rubber grommets to isolate the GPU and the sound card from each other (see below for the link to the grommets I used). Later I learned that coil-whine was caused by vibrations of the electromagnetic coils on the GPU. It appeared to me that the buzzing was coming from a high frequency vibration of the 3.5mm jack. Everywhere I read said it was from EMI interference but two observations I figured it was something else: 1: when I held the 3.5mm jack with a little pressure, the buzzing was reduced or was eliminated and 2: when I was plugging the jack into the sound card, just touching the jack to the 3.5mm port caused the buzzing. Background, I was looking to fix the buzzing in my Soundcard which was associated with GPU coil-whine (RTX 3090).
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