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| Component | Minimum | |-----------|---------| | OS | Windows 7 / XP, macOS 10.6 (Snow Leopard) | | CPU | 1.5 GHz+ | | RAM | 1 GB (2 GB recommended) | | Disk space | 1.2 GB | | Java | JRE 5 or 6 (32‑bit) | | Eclipse | 3.5.2 (bundled) |

If you are downloading today, the is generally recommended as it includes a pre-configured version of Eclipse, reducing compatibility issues with modern Java runtimes. flash builder 4 download