1. Its recommended to use a 600W power supply for a gtx770
2. RealHardTech test power supplies. They recommend at l;east 500W for the R9 270x.
3. The Thjermaltake Smart SE power supplies are not on tiers 1,2a, 2b or even 3 or 4 of http://www.tomshardware.com/answers/id-1804779/power-supply-unit-tier-list.html#13224310. So thye are not a good quality power supplies.
4. You can find Thermaltake Smart power supplies in the Johnny Lucky Lemon list -
http://www.johnnylucky.org/power-supplies/psu-lemon-list.html
5. ReadHardTech says the power supply has not yet been certified to 80plus and there are no reviews on them