Teapo are Taiwanese capacitors and work well enough for most applications.
Basically capacitor ratings are something like 420 ohm 480 volt 105 degree C. Roughly that means the capacitor is capable of lasting like 2,000 hours at 480 ohms at 105 degrees C.
At 95 degrees C it would last 4000 hours, at 85 degrees C 8000 hours (or was it 16,000).
BADCAPS.net
http://www.badcaps.net/
A bit fanatical but cover the subject
jonnyguru.com/forums is also very good and informative
http://www.jonnyguru.com/forums/
Best I can tell the internal temperature of the power supply at the lacation of each capacitor determines its life span. Generally Japanese caps are very good to excellent, Taiwanese are fair to very good,
Chinesse can be horrible to adequate to good.
For a well designed all Japanese cap PSU figure to spend $80-100 to start. It is possible designers feel as efficiency goes up temperature goes down internally, and allows "lesser" caps.Speculation.
If it worries you the Rosewill Capstone power supplies are 50 degree C rated from Super Flower, who I believe usually use "all" Japanese caps. Gold rated power supply. Available modular or not.
Rosewill Fortress are Platinum rated at 50 degree C.
Rosewill Hive are Bronze rated at 40 degree C (internally identical to OCZ ZS power supplies.
Corsair CX power supplies have used "other than Japanese" caps always I think.
It is "new" in the "better" Corsair ppower supplies.
