Amazon.com Inc. could sell 6 million of its Kindle Fire tablets by the end of the year, a new report from Goldman Sachs projected on Tuesday.

The firm's analysts also projected that Amazon (NASDAQ:AMZN) could sell another 8 million of its other Kindles in the fourth quarter for a total of 14 million in the period in which the Kindle Fire was introduced.

Goldman projects that Amazon will sell between 15.5 million and 20.5 million Kindle Fires during the first full year of availability.

The fact that the Kindle has a low price tag and is concentrated on media consumption — reading books and news, watching videos or listening to music — rather than apps is credited with its surge in sales, the analysts said.

"While the Kindle Fire certainly doesn’t have the breadth of functionality of the iPad (no camera or microphone, shorter battery life and less memory), it does a few things very well, which just happen to be the few actions that users utilize the tablet form factor most often for, in our view," the report said.

A recent report from IHS iSuppli said that the Kindle Fire is eating into the market share of Apple Inc.'s (NASDAQ:AAPL) iPad and Samsung's tablets.

That report projected that the Kindle Fire will finish the fourth quarter with almost 14 percent of the global tablet market.

Apple is expected to command nearly 66 percent and Samsung nearly 8 percent.

IHS also estimated that the Fire only costs $201.70 to make, just $2.70 more than the tablet's $199 retail price.