As this is a PSU related issue I would think it's more likely to be something to do with the +5VSB line which has already been mentioned. This option of 'audio always on' would I guess make the sound run off the +5VSB line. Why you would want the sound on when your computer is not on I don't know. When you disable this it will use the +5V line be used instead. Similarly the S4 and S5 state changes would do a similar thing. I personally disable anything that uses +5VSB now just to save 1W when the system is switched off.

Shame that more isnt done to tame the whines while pc is actually on! The fact that people have to speculate what "DISABLE Audio Always On" means, is also kind of annoying. I dislike it when a company is vague or fail to mention what a firmware update (gigabyte!) resolves. I use onboard audio, so switching it off isnt a solution.

Lookn forward to more transparency regarding these solutions!

I'm pretty sure that's not what the BIOS option they are talking about does. You can still use your onboard audio if you disable this option but it will run off +5V rather than +5VSB so won't give you sound when the system is off AFAIK.

Yesterday I got my new Seasonic P-520. And I have to say there are no noises at all. Being an owner of 3 seasonics (x-1050, ss-650HT and p-520) I had no problems with them. Only once I noticed squeak when I was overclocking and my system got BSOD, and it was only for several seconds while computer was rebooting. So I think that is a problem of MB's.

I'm the 1% that is never happy with any product.

I bought a Super Flower Power 500W fanless and I'm HAPPY with it.

Not a whim, not a buzz, nothing !!!!!!!!!!!!!

If anyone is interested

http://www.super-flower.com.tw/products ... 79&lang=en

I bought the 460W Seasonic Platinum Fanless to replace my dead Antec Phantom 500 (7+ years usage). I'd have preferred the 400W but no one had it in stock and I needed a replacement ASAP. I also bought an Antec Solo II at the same time to replace my P180.

I haven't spent a lot of time with the Seasonic, but I've noticed a constant and high frequency (interval-wise as opposed to pitch) clicking/ticking sound. I noticed a faint high frequency whine too, but this was inaudible from a few inches away from the case. If this was inside my P180 I don't think the clicking would have been a problem, but with the Solo II it's right at the top of the case directly under an open grille and my case is under the desk.

I'd like to add that I was 100% happy with the Phantom. It didn't have any kind of whine and and a very, very faint buzz only detectable with my head right next to the PSU. I'd have continued using it for as long as I could if it hadn't died.

Any updates on this, is anyone experiencing any kind of problems or have they all been resolved either with newer units sold by Seasonic or obtained via RMA? Any luck with BIOS settings?

Also, while the unit in the review is the "SS-520FL2" I have noticed an "SS-520FL" being sold as well. I assume the "SS-520FL2" is an improved revision. However, this review was done of the "SS-520FL2" model, which the reviewer did experience problems with, although later resolved. Can anyone comment on this? I would hate to be sold an older, unimproved unit that has just been sitting in a warehouse for a couple of years.