Mine seemed loud as Hell this morning while playing the beginning of KZ. Don't remember the loudness yesterday but I had BF4 cranked up.
I bought from Amazon too and now I'm wondering if they might have received a bad batch. It might be helpful to know what geographical area everyone's in to help identify how widespread the problems are. Ky here and no issues (so far).
Also, I posted in the appropriate thread, but if anyone has a BF4 China Rising code they're not going to use I would greatly appreciate it. Thanks!
ALL PS4s are loud. They just are. It greatly depends on what you're playing, of course. Killzone sent my neighbor's PS4 into vacuum-cleaner mode. Resogun on my PS4 treats it the same way. They all get loud, but all calm down quickly when you exit the game completely (I don't mean hitting the PS button - I mean actually closing the application).
I also think that the defective rate of PS4s is much higher than 0.4%. I can't say exactly how high, of course, but there's a LOT of BS surrounding this launch.
My PS4 won't take a 1TB Seagate Momentus 5400rpm drive. Simply won't boot with it in there. Friend 1's PS4 wouldn't boot with his 1TB Seagate Momentus 5400rpm drive. So right off the bat, not all drives work with the PS4. Friend 1 used his PS4 yesterday and it was fine. Turns it on today, played 10 mins of Assassin's Creed IV, game froze, PS4 switched off. Now it won't do anything except power on for 3 seconds and then shut off. No safe mode. Nothing. Dead.
My neighbor got his PS4 yesterday from Amazon as I did. He said his PS4 kept switching off when he connects to PSN. I went over there with my USB stick and 1.5 firmware, did the firmware update from the USB stick, tried to get him online and WHAM, PS4 shuts off. As soon as his PS4 tries to connect to the Internet, it shuts off! It's a proper crash, too, since rebooting it brings up a warning about not unplugging it without turning it off (talk about adding insult to injury. The pos crashes and it blames US for it!).
Anyway, the only way to get his system "usable" was to turn off the wireless router so the PS4 could boot without crashing (yeah, really), and then disabling the Internet in Network Settings, before turning the router back on. He played Killzone last night and the system was fine, but yeah, he has no Internet-able PS4.
We took a video of it crashing before reaching the main menu because it connected to the Internet on boot-up....
http://s10.photobucket.com/user/wgrose/media/IMG_2534_zps2fafa26a.mp4.html
Mine still works, but for how long, who knows?