This is my first post here, so I thought I would post some info about my system and how I got addicted to PC silencing.
It all started yearly this year, when after burning my motherboard, I also decided to order new case for myself. After reading reviews for Nexus Breeze and Antec Sonata, I ended taking the Sonata. After assembling my system (Antec Truepower 380S, standard Antec case fan, Barton 3000+ with Glacialtech Silent Breeze II, Geforce 4 Ti 4200 with standard cooling, 80gb IBM & 160gb Maxtor, LG DVD-burner) I was very pleased on how "silent" it was.
I keep my computer in the same room where I sleep. So, after few weeks, my girlfriend started complaining, that she had hard time sleeping with the computer on at night. So, I opened my case and started listening... Stopped the CPU and Geforce fans.... "What the hell?!? Those fans whine, snap, crackle and pop!" How didn't I notice those before?
So, I replaced the CPU-fan with a Papst 80mm 8412N/2GME (26db) and unhooked my graphics card fan. Suddenly it seemed a lot more quiet. (just so you know, my girlfriend was extremely satisfied at this point).
But, like always, you get used to the new sound level and it starts bothering you. So, I bought the Acoustipak noise dampening set. Again I was bit more happier. But after reading through this forums, I realized, that my system wasn't even quiet yet.
So, to cut the story short, my current setup has two Nexus 120mm fans (1 intake, 1 exhaust), Aerocool HT101 with the papst fan (using Speedfan to keep it off until CPU is 50C) and a Fortron FSP300-60pn. When idle or under normal load (no gaming), the computer is very quiet, almost silent. Next on the list is the HDD silencing and the PSU.
I bought the Fortron, because it cost me only 27€ and I had read so many stories about it here. The Truepower was left unmodified, because I didn't want to void the warranty... yet! Anyways, I've read about people modifying the Fortron with different fans. Mostly it seems, that you guys set it (or a quieter fan) to a fixed voltage, like 5V or 7V. But I'm really interested in switching the stock fan with a Nexus 120mm fan. The CFM would drop from 70 to 40 (at max). Because the fan is temperature controlled, the only problem is, how does the Fortron handle the "biggest" load with only 40 CFM? I've understood that a good PSU exhaust is around 35C - 40C? Or can you really draw conclusions from the exhaust temp?
Because I work in electronics myself, I have become really "scared" of modifying my PSU. I very often keep it on when I sleep or I am away. So, I don't wanna burn my house because of my silencing fetish!