A lot of users made a big deal about the fact that Geforce GTX 970 has 3.5 GB fast memory and 0.5 GB slow memory, which resulted in false advertising claims.
One of the end users went to Amazon and complained to the company about the card claiming the false advertising. The card was sold as 4GB and the Amazon Prime customer claimed that this is a 3.5 + 0.5GB card.
It was a small victory for "thomas" as Amazon decided to refund 20 percent of the price and he managed to keep the card. to mark his own words he "cannot go without a GPU".
Nvidia is also facing a class action lawsuit as a few angry customers are going against Gigabyte and Nvidia making its case against the fact that Nvidia advertised the card as GeForce GTX 970 with 4GB of RAM, 64 ROPs, and 2048 KB of L2 Cache. In reality, the GTX 970 has 56 ROPs and 1792KB of L2 Cache as well as 3.5GB fast memory and 0.5 GB slower memory.
It all started with Ryan Smith at Anandtech, who penned an in-depth article about the card and proved that the specification advertised by Nvidia was a bit off.