| Feature | Office 2010 (64-bit) | Microsoft 365 (64-bit) | | :--- | :--- | :--- | | | Very fast (lightweight) | Moderate (bloated with telemetry) | | Excel Calculation | Fast with multi-threading | Faster (Uses AVX2 instructions) | | RAM Usage | Low (~150MB idle) | High (~300MB idle) | | Formula Limit | 8,000 per sheet | 16,000+ per sheet | | Modern File Types | Supports .xlsx , .docx | Supports new xl , MHTML, 3D models |
No real-time collaboration, no OneDrive auto-save, broken Outlook connectivity with modern Exchange/OAuth.
Microsoft Office 2010 was a landmark release as it was the first version of the suite to offer a native 64-bit edition. While Microsoft officially ended support for Office 2010 on , many users still seek the 64-bit ISO for specific needs, such as handling massive Excel spreadsheets or integrating with other 64-bit applications. Key Features of the 64-Bit Edition