EA listed the following minimum system requirements for the alpha, and said that they apply only to the alpha, not the final Battlefront game:
CPU: Quad Core CPU e.g. Intel Core i5-2300 @ 2.8 GHz or AMD Phenom II x4 955 @ 3.2 GHz or AMD FX-8350 @ 4.0 GHz
RAM: 6 GB
OS: Windows 7 SP1, Windows 8/8.1 (64-bit operating system required)
Video Card: NVIDIA GeForce GTX 680 or AMD Radeon HD 7970 with 2 GB of Video Memory