Looks like these could be out before Silverstone's updated 650W SFX gets released. They have 80mm fans though.
http://techreport.com/news/31041/enermax-revolution-sfx-psus-offer-efficient-power-in-a-tidy-package
https://www.techpowerup.com/228288/enermax-unveils-the-revolution-sfx-power-supply-series
Gold rated, fully modular flat cables, semi-fanless and apparently due on the 9th December.
They also have the +12V line rated to 648W (for 650W model) and an ATX bracket included. No word on warranty.
http://techreport.com/news/31041/enermax-revolution-sfx-psus-offer-efficient-power-in-a-tidy-package
https://www.techpowerup.com/228288/enermax-unveils-the-revolution-sfx-power-supply-series
Gold rated, fully modular flat cables, semi-fanless and apparently due on the 9th December.
They also have the +12V line rated to 648W (for 650W model) and an ATX bracket included. No word on warranty.