@creayt Get one of these if you want to know for sure

http://www.newegg.ca/Product/Product.aspx?Item=N82E16882715001

Other thing to consider is the larger your power overhead the cooler the PSU will run, the longer it will last. The holy trinity of electronics life.

http://www.eetasia.com/STATIC/ARTICLE_IMAGES/201306/EEOL_2013JUN10_OPT_POW_TA_01Fig2.jpg

MTBF of caps vs operating temp (very rough guide but gives you a solid feel for the effect of temp on electronics). About every 10c you go up, life goes down by half.