THose “Japanese” capacitors are still made in China. And capacitors are 1 of a thousand things that can determine quality.
Here is the problem with the internet. Some people don’t know what they’re saying, some are fanboys, some are really trying to help you and you don’t know who to trust. So you ask to see who you can trust more, which is what you’ve done.
The System Power 9 is better, and here is why:
It uses DC to DC technology instead of group regulated. Group regulation regulates the 5v and 12v rail together, so when there is an imbalance between those rails one of them will have loose voltages.
Since most modern computers primarily use the 12v rail like yours, and hardly any from the 5v rail it causes an imbalance which you know means voltages won’t be “clean”/“stable”. For example, you may be receiving 11.5V instead of 12V.
Crappy voltages will decrease components life time.
Also the system power 9 has way better protections than the Seasonic. The Seasonic uses one of the crappiest protection ICs:
http://www.hardwaresecrets.com/datasheets/HY510N_v1%20301.pdf
No OCP on
any rail (any decent PSU will at least have Over Current Protection on the minor 3.3V and 5V fails), which is protection for when a pair shorts.
No UVP on the 12V rail.
No OTP implemented, so when the fan dies the PSU won’t shut off until something starts melting
And the protections it does have aren’t very good either.
It also likely has a quieter fan, knowing how quiet be Quiet!’s recent power supplies are
And this is what experts will tell you at JonnyGURU:
http://www.jonnyguru.com/forums/showthread.php?t=15013
You can just look at the age difference too. The Seasonic was built and made for systems almost a decade ago.
Facebook
Twitter
Instagram