- Dec 24, 2009
- 50
- 0
- 18,540
I have an EVGA SuperNOVA 550 G2 and GTX 1070 SC. At high fan RPMs, especially at certain problem speeds (80% and 100%) I hear a loud, oscillating (up and down) coil whine. It isn't a buzzing or clicking, more like a standard whine but which oscillates in decibel in a sin wave pattern. I dislike coil whine, but when it has body to the tone and oscillates, it is much much more annoying to the ear. It's like experiencing constant shifts in air pressure because of the body this particular whine has.
I'll attempt to give a good description. First of all, this doesn't occur due to GPU load, ever. It happens strictly because of high video card fan RPMs (I tested this in EVGA Precision), regardless of GPU load. The sound at the moment seems to be producible by both the PSU and GPU, and when both are producing the sound the oscillation is in "sync".
At 80% GPU fan speed, the coil whine is the loudest from the PSU, which can be heard most clearly by placing my ear against the PSU casing. I can localize the sound about an inch or so behind the PCIe 6-pin outputs. At 100% fan speed the whine is absent from the PSU but a bit audible from the video card, while at 94% the noise is further diminished and pretty bearable. However, for fan curves the fan speed will be variable and I both want to solve the problem at all fan speeds and identify why this is happening in the first place. I can't find any similar problems through google. I also will point out that last night when I was testing, the PSU exhibited the noise at 100% fan speed, while today it only does around 80% and then stops at 100%.
Extra info, this noise happens with both my Corsair tx650w and the Evga SuperNOVA 550 G2, with three separate video cards with dual fans (two different model RX 470s, and the GTX 1070). The problem, at least in how it oscillates, did not exist for any of my previous video cards which were all single fan. It seems dual fan, or recent dual fan circuitry design, is not playing well with the two power supplies I've tried. The SuperNOVA 550 G2 is the best in its wattage class at the moment, so I am wondering if this problem is inevitable with all power supplies. Yet no other reports on this issue that I've seen.
I'll attempt to give a good description. First of all, this doesn't occur due to GPU load, ever. It happens strictly because of high video card fan RPMs (I tested this in EVGA Precision), regardless of GPU load. The sound at the moment seems to be producible by both the PSU and GPU, and when both are producing the sound the oscillation is in "sync".
At 80% GPU fan speed, the coil whine is the loudest from the PSU, which can be heard most clearly by placing my ear against the PSU casing. I can localize the sound about an inch or so behind the PCIe 6-pin outputs. At 100% fan speed the whine is absent from the PSU but a bit audible from the video card, while at 94% the noise is further diminished and pretty bearable. However, for fan curves the fan speed will be variable and I both want to solve the problem at all fan speeds and identify why this is happening in the first place. I can't find any similar problems through google. I also will point out that last night when I was testing, the PSU exhibited the noise at 100% fan speed, while today it only does around 80% and then stops at 100%.
Extra info, this noise happens with both my Corsair tx650w and the Evga SuperNOVA 550 G2, with three separate video cards with dual fans (two different model RX 470s, and the GTX 1070). The problem, at least in how it oscillates, did not exist for any of my previous video cards which were all single fan. It seems dual fan, or recent dual fan circuitry design, is not playing well with the two power supplies I've tried. The SuperNOVA 550 G2 is the best in its wattage class at the moment, so I am wondering if this problem is inevitable with all power supplies. Yet no other reports on this issue that I've seen.
Facebook
Twitter
Instagram