i5 3470 - 77W TDP
10Gb DDR3 RAM (1x 8gb, 1x 2Gb)
WD Blue 7200rpm 1TB HDD
Gigabyte Z77M-D3H
ASUS R9 270 DirectCU II OC - Up to 150W TDP
Fractal Design Define R4 (2x 140mm Silent Series R2 fans)
Seasonic M12II 620W
Pretty basic question here, if I were to add an additional ASUS R9 270 (NOT A 270X) how would my system fair? Im worried the psu might just be a little bit too small but it is a Seasonic unit & is regarded as a high quality unit.
I did some math myself & the draw at max would be about 490W if my knowledge of components is correct (2x 150W, 77W, 80W for the motherboard(ESTIMATE), RAM, HDD) but this isn't concrete & I would like somebody with a better knowledge of this type of system & its kind of power usage.