Legit Reviews posted a review on the Sapphire Nitro R9 390 & Nitro R9 380 Video Cards
A quote from the article:
The two Sapphire Nitro R300 series graphics cards that we are looking at today are the Sapphire Nitro R9 390 8GB and the Sapphire Nitro R9 380 4GB. These cards are basically updates of the AMD Radeon R9 285 and AMD Radeon R9 290 that have been on the market for some time. Read on to see how they perform when put to the test!Sapphire Nitro R9 390 & Nitro R9 380 Video Card Reviews @ Legit Reviews