Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Is the noise really that bad?
Document: Thankfully Amazon has an excellent and easy return policy, so I put the old power supply back in my PC and returned this model.The only good thing I can say about this power supply was it seemed to supply good and steady power, and it didn't have a buzz. Too bad about that fan.
First let me say I am a HUGE Seasonic fan. I've owned their power supplies in the past and used PSUs in other builds. However, this model has one huge flaw that is truly unacceptable in this age of quiet computing....The fan is way too LOUD. When I initially got everything hooked up and booted up the first time, I genuinely thought it was malfunctioning. By far the loudest thing in my case was the PSU fan. The noise was unbearable.
This power supply comes with everything you'll need - all the extra cables and wiring. I have it installed fan-down but your setup may vary. It is quiet and has no problem pushing all my peripherals and internals.
This is a great power supply. Tons of power for pretty much any 2-way SLI/CF setup, super stable, silent, and the ribbon-style black cables are great. Sleeving on the 24-pin is great as well! I made a video showing a bit more of the power supply as well, link below.[...]
Such a great power supply! I have it on a ASUS Maximus VI Hero, i5 4760k, EVGA gtx 770 And I have no issues at all. No coil whine, no outages. The PSU works perfectly. This brand will cost you a tad more, it's money well spent. Never ever cheap out on the PSU. You won't be dissapointed
Seasonic power supply units are top,of the line and this choice I made is great for two,reasons ; first , it will deliver enough power with reserve for future upgrade and the price could not be beat , just over $100 for a 750 watt top,of the line PSU is a deal you will regret passing up,if you do not go for this deal ! I,was complimentary to my windows 8 project . It runs quiet and never falls short of power .
Removed and checked voltages on the Antec. Although multimeter indicated acceptable values, it was on the bench with no load and the fan on the p/s was spinning very slowly. I suspect that the key here was that when placed under a load situation, the old Antec would show signs of it's age and its inherit power weakness. After a lot of research, decided on this Seasonic. Seems to be solidly built and actually quite heavy when compared to the old antec.
Not a big deal though.What WAS a big deal - after installing the new M12II-750 and running a stress test like Uningine's Heaven benchmark or Prime95, this power supply's fan kicked in during heavy load, and was very LOUD. Much louder than the older model, which was nearly silent except for the aforementioned slight buzz.
My previous power supply is the Seasonic M12 700 watt, the earlier version of this power supply before the "II" model. I was satisfied with the old model, but after a few years it developed a very faint buzz (capacitor?) after it's been on for a while.
If you are looking into upgrade PSU , look,no further : seasonic !
Answer: I purchased a very popular brand and it was very loud. I replaced it w the same one Exact same problem. I sent it back and got this. No noises that I know of, very smooth.