EA and DICE revealed the reccomended and minimum required PC specs for this November's Battlefield 4, and as expected you'll need some serious hardware to run the game at its highest settings. 

Straight from the Battlefield 4 official site, the requirements are:

Battlefield 4 system requirements

The minimum PC system requirements for Battlefield 4 are expected to be:

• Dual core CPU (Intel Core i5 or AMD “Bulldozer”).
• At least 2 GB main system memory
• Graphics card with at least 256 MB of VRAM and support for DirectX 10
• 20+ GB of harddrive space
• Windows Vista

Recommended system requirements

The recommended PC system requirements for optimal visual quality and frame rates:

• Quad core CPU (Intel Core i5 or i7) at 3 Ghz
• 4 GB memory (8 GB for 64-bit operating systems)
• A modern DX11 graphics card with 1 GB of video memory, GeForce 600 series or Radeon 7000 series
• Windows 7 64-bit operating system (Windows 8 is supported as well)
• 20+ GB of free harddrive space

DICE also notes that "Battlefield 4 is slightly optimized for AMD hardware, since the game also runs on next gen consoles, which are powered by AMD CUPs and GPUs. This means gamers with AMD PC graphics cards might see a slight advantage. Both Nvidia and AMD offer Battlefield 4 optimized PC drivers."