HIS R9 380 IceQ x2 OC Video Card Review - Overclockers
SAPPHIRE Graphics Cards R9 380 4G NITRO 256Bit GDDR5 Video Card for AMD R9 300 Cards
Hardware review: MSI Radeon R9 380 GAMING 4GB < NAG
What do the R9 300-Series actually consume in terms of wattage, here you go - AMD Radeon R9 390X, R9 380 And R7 370 Power consumption stress tests. : r/pcmasterrace