I've came across this topic through google as I am having the exact same issue with this PSU. And adding my 2 cents.
The Platinum 1050 (SS1050-XP3) is noisy whenever the fan goes on, there is no ramping up. It just goes full retard right every time.
For your reference:
- When I'm browsing it goes on every now and then. It's VERY noticable and far surpasses all the fans I have in my case: 3x120 @1200 , 3x140@1000, Noctua industrialPPC's.
- When gaming it's goes pretty much non stop, and I annoy my friends since the fan is being picked up by my mic. It's a cardiod mic, not even aiming at the pc so imagine that.
I own a 1000xp1 as well, but the fan noise is far below the SS1050-XP3. Even when I put it on 'normal' instead of hybrid. It's whisper silent.
The SS1050-XP3's volume is more comparable to someone talking, or those old Alpha PAL8045 fans.
Knowing this is an old topic, but the issue still persists as of 2016, I felt the need to update the thread. I bought this PSU a week ago on 22th of January.
I'm sending it back and considering going for the Silent Snow 1050, or the 1200XP3. Hoping I just had a bad copy of the SS1050-XP3. If this is intended, I'm quite baffled as I never expected something like this from Seasonic.
Like Druskq, I've also came across this thread from Googling the Seasonic noise issue. "The Platinum 1050 (SS1050-XP3) is noisy whenever the fan goes on" accurately describes my situation.
My build isn't power hungry enough to require 1050W (i7 3770k + 980 Ti). I made the purchase of this PSU to get some extra headroom, under the presumption that it would stay silent under normal operations like web browsing or music listening. I've also read online (can't remember where) that the fan doesn't usually kick in until the power draw reaches 200W and up, so I thought I would achieve silent operation on idle.
Nope. Every 15 minutes or so the fan kicks in. Roars like a hungry lion for 5 minutes, then goes back to sleep. But it's a hungry lion, so it wakes up again in another 15 minutes to wake the whole village up.
Maybe something's wrong with my hardware and it's drawing a lot of power even during idle? I bought a wattmeter specifically to check whether that's the case. During casual browsing the PC draws only an average of 80W with a typical fluctuation of less than 5W. A power draw value that I expect should not result in the fan kicking in.
Seeing that I bought the 1050XP3 in Hong Kong then took it with me to Canada, there's no way for me to return it. Under extreme frustration, I went with a ghetto solution:
(You might notice the CD cases that I use to lift the case up, and you might question whether it causes worse airflow or not. Rest assured that the CD case situation is only recent and temporary, the PSU fan kicks in with or with those CD cases.)
Using SpeedFan, this little guy is set to 35%, the minimal width where the fan spins. No more lions waking up out of nowhere. Problem is mostly solved.
But... you know, there's just this unpleasant taste in my mouth. I spent the money hoping for silent operation, but I ended up having to come up with an inelegant solution to solve the noise problem. Given the price range of the PSU and the reputation of the brand, these type of problems really shouldn't exist, taking into account that there has been noise reports since 2014. I understand that a fairly aggressive fan speed profile is beneficial for the PSU's lifespan in the long run, but from what I've experienced with the 1050XP3, it's simply too aggressive. By adding a 90mm fan running at 900RPM, the PSU fan no longer spins up, meaning that the whispering 90mm fan is already providing enough airflow to keep the PSU temperature from rising. Seasonic should fix the "Silent mode" fan speed to actually be silent.
I don't know if I should even contact Seasonic for a warranty check, since I don't have a replacement/backup PSU to use if I send this one out. And there are no hopes of returning this either, so I can't even side-grade to a Snow Silent.