My current specs:
Mobo: AsRock Z77 Extreme 4
CPU: i5 3570k @ stock
RAM: GSkill Sniper 1600 2 x 4G
PSU: Seasonic S12II 620W
Hard drive: Corsair Force 3 120GB SSD + Hitachi 500GB HDD
I plan to buy my first graphic card, a R9 280x only for gaming. No plans to overclock. Had previously decided to go with the Sapphire Vapor-X or Toxic, but am worried that my PSU is 620W and both are power hungry.
Also, they require 2 x 8 pin connectors but the PSU has 6 + 8 pin ones. How safe is using adapters for this? Should I go for the ASUS DC2T, that supposedly has lesser power requirements and needs 6 + 8 pin connections?
Is there noticable performance difference between the Sapphire Toxic and ASUS DC2T for gaming? The ambient temperatures at my place are quite high too, will the lower power ASUS run cooler too? How risky would it be to buy the Toxic with respect to the PSU and adapter?
Your SeaSonic should be fine with the Toxic, and still have headroom left, the Asus is a great card, picked up the CU 280X when first released, OCs very well so should be a good choice also (and runs cooler)