Buzzing sound coming from the PSU

[phexac]

I have Cooler Master 750W PSU - the one below:
http://www.newegg.com/Product/...x?Item=N82E16817171024

I recently upgraded to XFX GTX260 OC from 8800GTS320. Now, it seems that when the card starts to draw power at close to full load, the power supply starts buzzing. It's quite annoying. Didn't do this before I think.

When I am simply at desktop, it buzzes, but quietly. When I alt-tab into a game, such as Civ4 and the card starts drawing more power, the PSU buzzing sound volume goes up quite a bit. The PSU is less than 1 year old.

What's the deal with this? Do I need to replace the PSU? Can I submit it to CM warranty? If so, what do I need for them to honor the warranty?

Thanks for your help.

 

[BlueAcolyte]

Did this happen before the GTX 260?

 

[phexac]

Originally posted by: BlueAcolyte
Did this happen before the GTX 260?

Not that I noticed. It was likely there but quieter. I only noticed it when playing Civ4 since it got quite loud. But then when I actually paid attention to it, it is still there, but quieter when the load is lower.

After some thinking and research, I decided it's clearly a sign of physical deterioration in the PSU, so I'm gona try for a warranty exchange.

In case that does not work, can you guys recommend a good 700-800 W PSU? Thanks.

 

[VirtualLarry]

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