The first marketing material of one of the upcoming Radeon R9 300 series cards has been leaked online! WCCF Tech found a marketing slide that details the upcoming Gigabyte Radeon R9 380 G1 GAMING graphics card with 4GB GDDR5 memory.
This model uses a dual-fan WindForce x2 cooler with direct-touch heatpipes and features a stylish back plate. Unfortunately, the slide doesn't reveal any clockspeeds or other specifications but we have reason to believe the entire 300 series will consist of rebrands of older GPUs. The Radeon R9 380 is expected to be based on the Tonga GPU that was used for the Radeon R9 285 but with memory amounts of not only 2GB but also 4GB.
Interestingly, another slide also makes mention of the Radeon R9 390 and Radeon R9 390X. Previously it was believed these cards would be based on Fiji but more recent rumors suggest AMD's next flagship GPU will take on NVIDIA's Titan lineup with a fancy new name like "Radeon Fury". As such, it's believed the Radeon R9 390 and R9 390X will be based on the Hawaii chip that was used for the Radeon R9 290 series. One major difference though seems the decision to double the memory 8GB of GDDR5.