Last week, AMD brought ?new? Radeon R9 300 series video cards to market that are essentially updates of the Radeon R9 200 series cards to ensure gamers have the performance they need be it for online gaming or in eSports competitors. The AMD Radeon R9 390X might not be the fastest card in fastest card in the stable, but AMD took their previous flagship video card that's been battling NVIDIA's flagship cards and gave it a few tweaks under the hood. Those tweaks are basically higher clock speeds and requiring 8GB of GDDR5 memory to be on all Radeon R9 390X cards. AMD was able to do this without increasing the cards Thermal Design Power (TDP) as they have the 28nm Hawaii GPU manufacturing process figured out and refinements over the years have allowed for higher clock speeds and improved efficiency. AMD believes that these improvements are enough to ensure Hawaii will be competitive in the market that is quickly embracing 4K and Virtual Reality (VR) gaming.