Revenue jumped almost 50% compared to 2011, soaring to $106.6 million. That beat the $95.8 million that Wall Street was looking for, Reuters noted. Adjusted EPS for the quarter was 9 cents, which topped the 4 cents analysts had predicted.
Shares of Fusion-io jumped more than 27% in Friday afternoon trading.
Surging gross margins boosted performance, rising from 51% in the second fiscal quarter to 57.5% by the fourth quarter.
The storage device maker said revenues rose on increasing sales to computer equipment makers, including Apple (NASDAQ:AAPL), Hewlett-Packard (NYSE:HPQ) and IBM (NYSE:IBM). The company more than doubled its number of customers from 1,500 last summer, to 3,500 this year.
Company officials expect revenues to grow between 45% and 50% in the current fiscal year, hitting a range of between $521 million and $539 million. Analysts predict 2013 revenue of $478.8 million.