me like cool name cool looks quiet operation my sf leadex is 6.5 yo gonna have to think about buying a new one while I can still salvage some money for selling the current one

I love to gaze at high quality tech although I can't afford none. I have 2 NOX PSUs, one of witch is 13 years old, and they both costed less than half of these. I wonder what are you really paying for...

How are these better than series 11? I can highly recommend bequiet psus. As i had over 10 pcs over last 10 years and none died, all same accustis as brand new. Maybe i was lucky but they seem high quality to me

Fox2232:

Proper question is: MTBF? Did your 10 PCs had reasonable of time to even reach 1/4 of MTBF? Like, if I buy 120 of PSUs in 10 years. And keep each only for one month. There will be no opportunity for components to die from prolonged stress. So, what's minimum/maximum/mean time you kept each of those 10 PSUs in each PC over course of 10 year? And what was usual load in percent of maximum rated load of Given PSU?

It is quite easy to answer as all of them are used even today. Half of them mainly models up to 550W as office/home pcs. Doing 12h/day of online time. Another half is gaming PCs. Two of my own, working heavy under gaming and(hashcalc).. 680W dark power ( if i recall model correctly). Didn't manage to keep up ryzen 5600x + r6800. Being 8y old after 3 gaming and overclocked rigs. Seems good record to me

Fox2232:

Thanks. Does that mean that those 550W have usual load around 65~125W? And then rest would be loaded around 250~550W, which is reasonable load. But all are quite low power PSUs. Are any of them magical 6x 12V Rails with merge to 1 rail "Overclocking" Function? Or similar design? Often simple products work much better and fail less often than complex over-engineered products.

I replaced that 680W with 750W model , they both have 4 rails -. You have to use separate rails for GPU if you want stability ...The other weaker models are loaded no more than 100W i'd say but they are online alot, and fans are as silent as they were brand new which is good record in my opinion . I had PSUs from Corsair , Thermaltake , like 6 different models and half of them died . Over 10 different Bequiet psus and none died . Maybe just luck but i think they are high quality.