Cheeping sound at HD4870

[nibbs]

Hello there!

The reason I write is that since I installed the Setsugen on my Sapphire HD4870 I can hear a cheeping sound when the card is under load.

Whenever I start a demanding software such as Folding @ Home or Furmark the card immediately starts the sound, when the application is closed, the sound is gone. It's not very loud, but high. As all my fans run at low speed even under full load (and all components are well temperatured), the sound is very noticeable from inside my case which has a rather breezy design.

Of course, I don't blame the Setsugen, it's a great cooler.
Although I had to add an extra VRM-Cooler from a competitor because the tiny self-adhesive coolers didn't do the job too well. Just hope to find an expert here, who could point me to the source of the sound and if I could do something about it...

[Genghis99]

LOL - Maybe that can be caused by the reduced noise with the setsu.

What you hear should be the sound of the choke coils - on heavy load they can produce whisteling or twittering sounds on some cards.

But nothing harmful, you're only not able to hear it with the roaring noise of a standard cooler.

[nibbs]

Yeah, I thought so. Ok, then I will have to live that.

Thanks for enlightening me!