ThinkComputers posted a review on the NVIDIA GeForce GTX 900 Series Preview
A quote from the article:
NVIDIA's GeForce GTX 900 series graphics cards will be launching this week and we wanted to give you a preview of what to expect from NVIDIA's latest graphics cards. Both the GeForce GTX 980 and GeForce GTX 970 will be based off NVIDIA's GM204 silicon. We have already seen the Maxwell architecture on NVIDIA's entry-level GM107 based cards, the GeForce GTX 750 Ti and GeForce GTX 750. Now it is time for the performance segment cards, which will include the GTX 980 and GTX 970 to start with the GTX 960 to come later down the line. We have compiled all of the information we know about both cards in this article. We will keep this article updated as more information comes available.NVIDIA GeForce GTX 900 Series Preview @ ThinkComputers.org