Bigbruin.com has posted a review on the Ultra Products 2nd Generation 500W X-Finity PSU

One issue that Ultra Products seems to be avoiding is the power factor value. While most manufacturers are offering units with active (or passive) PFC resulting in PF values around 0.90 - 0.99... the Xconnect and previous X-Finity were both rated in the low 0.60 range, and the new X-Finity is slightly improved at 0.70, but that is still quite weak.

Ultra Products 2nd Generation 500W X-Finity PSU Review