AMD Officially Launches Radeon 300 Series Lineup - $429 For 390X, $329 For 390 8 GB Cards, First Official Sight at R9 Fury X
AMD officially launches Radeon R7 300 series graphics cards
AMD Launches New Radeon R9 and R7 300 Series Graphics Line-Up
AMD Announces the Radeon R7 300 Series | TechPowerUp
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
AMD Radeon 300 Series On Linux - Catalyst: 0 vs. Open-Source: 1 - Phoronix
AFOX R7 340 (2GB) - Radeon R7 300 series - AFOX
New AMD Radeon R7 and R9 300 series graphics cards released: Why you should wait | PCWorld
MSI AMD 300 series graphics cards
Radeon™ R7 300 series | Graphics Card - GIGABYTE U.S.A.