Speakers putting out hissing sound on 3d

Problem:: The problem is that every time I run something remotely 3d or do anything that requires video, a hissing sound or some sort of sound anomaly is put out from my speakers. On Lattice(a OpenGL 3d screensaver on reallyslick.com) it's more of a squealing sound, however. When I scroll down up and down pages it makes a short and quiet zzz type of noise as it's scrolling. I've noticed that the CPU spikes everytime I do this and the temperature jacks up about 10 degrees C.

What I have done:Isolated the problem to the computer itself. It's not the speakers, I unplug them from the computer and it doesn't continue. As well as the fact that it only happens on 3d imagery. These are high end studio monitors(Behringer B2031A). I can't notice a sound actually coming from the computer itself. I've read some other forums and a lot of the responses suggests the problem was the PSU. I checked each of the components and I can't notice an odd sound coming from anything but the speakers. Checked to see if the CPU was spiking while it was happening and I noticed whenever 3d image was showing it jacked up to ~60% and the temp went up to about 50C(Cores). PC is currently overclocked to 3.7ghz so this is about right for the load. CPU idles at about 33C. Cores idle ~ 40C

Things ruled out:
- Nothing as of yet 4/23/2010 @ 9:16AM

Things tried
- Waiting
- Changing the sound card is a no go. Went from mobo sound to an audigy 2 pulled from a machine from my step father's shop.
- Unplugged the speakers, sound was gone.

Specs:
E8400 OC'd to 3.7ghz http://www.newegg.com/Product/Product.aspx?Item=N82E16819115037
Arctic Cooling fan. http://www.newegg.com/Product/Product.aspx?Item=N82E16835186134
4x1GB of Mushkin DDR800 http://www.newegg.com/Product/Product.aspx?Item=N82E16820146673
1TB Drive http://www.newegg.com/Product/Product.aspx?Item=N82E16822136284
SAPPHIRE 1GB 4870 http://www.newegg.com/Product/Product.aspx?Item=N82E16814102801
Gigabyte GA-EP35-DS3R http://www.newegg.com/Product/Product.aspx?Item=N82E16813128086
700W OCZ GameXStream http://www.newegg.com/Product/Product.aspx?Item=N82E16817341002

Any help would be appreciated!

Thanks
5 answers Last reply
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  1. Forgot to mention. I've also done a lot to the computer in the past week. Like I mentioned I replaced the mobo sound with a sound card(Audigy 2.) I got the new speakers. I also RMA'd a stick of RAM so I have a new stick of ram in there.
  2. What cables are you using to connect the speakers to the computer?
  3. Hmm, interesting. How are your speakers connected to the sound card - analog or SPDIF? Have you tried reducing the oc to see if the problem goes away? If you use analog cabling to the speaker amp, are they good quality, & properly shielded?

    The audigy has its own onboard sound processor whereas the mobo probably relies on the CPU to do the processing. Since you have tried both, I doulbt it's the CPU. One thing you could try with the Audigy is to move it to a PCI slot as far away from the video card as possible, and make sure any inputs to it (DVD audio, etc) are also routed far away from the CPU & video card. Also try reseating all the cards to make sure they're firmly in the slot and all the way down.
  4. The cable is a 1/8" stereo connector that splits into 2 mono 1/4" connectors, I'd assume it's properly shielded. Analog. I'll reduce the OC upon posting this. The Audigy is on the bottom PCI slot whereas the videocard is on the top PCI-E slot. I'll reseat all the cards as well.
  5. Just one thing to clear up - you had the same problem with the mobo sound as well as the audigy? After re-reading your original post I couldn't tell for sure.

    Anyway, I'd make sure all the audio & video drivers were up to date as well.
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