Office for Mac Issues

How Microsoft Word Uses RAM on Apple Silicon Macs

Maira Mehtab Sep 21, 2026 868 views

Question details

Users want to understand how Microsoft Word handles RAM allocation on Apple Silicon Macs and whether upgrading to 16 GB or more improves performance.

Product: Microsoft Word for Mac
Device & OS: macOS (Apple Silicon M1-M4)
Scenario: Editing very large documents containing extensive footnotes, citations, and media.
Observed behavior: Evaluating system memory requirements and determining if Microsoft Word will perform significantly faster with higher RAM capacities on M-series chips.

Before you start

Before evaluating performance, open the Activity Monitor on your Mac to check your current memory pressure. Ensure you are running the latest native Apple Silicon version of Microsoft Word to guarantee optimal memory efficiency.

Solution 1Recommended

Optimize macOS Memory Allocation for Microsoft Word

macOS uses a Unified Memory Architecture that dynamically allocates RAM based on active processes. Manually freeing up system resources ensures Word has the memory it needs for massive documents.

Apple Silicon Macs dynamically share unified memory between the CPU and GPU. When working with extremely large Word documents featuring hundreds of citations and footnotes, the application requests more memory.

If you only have 8 GB of RAM, macOS relies on swap memory (using your SSD as virtual RAM), which can slightly slow down performance. By closing background apps, you can free up physical RAM and allow Word to run much smoother.

Open Activity Monitor

Go to Finder, open the 'Applications' folder, navigate to 'Utilities', and double-click on 'Activity Monitor'.

Analyze Memory Usage

Click on the 'Memory' tab at the top of the window to view a list of all active processes and your overall Memory Pressure graph at the bottom.

Identify Heavy Background Apps

Look for applications you are not actively using (such as heavy web browsers with multiple tabs or design software) that are consuming a large amount of memory.

Force Quit Unnecessary Processes

Select the application you wish to close and click the 'X' button at the top of the window. Confirm by clicking 'Quit' to free up RAM for Microsoft Word.

About Apple Silicon Unified Memory: 16 GB of unified memory on an Apple Silicon Mac performs highly efficiently. If you frequently edit 500+ page documents with heavy third-party citation add-ins, 16 GB is highly recommended over the base 8 GB configuration.

Free Microsoft Office alternative

Try WPS Office for Fast, Lightweight Document Editing on Mac

If Microsoft Word feels bloated or consumes too much RAM on your Mac, WPS Office provides a highly optimized, lightweight alternative. It runs natively and smoothly on Apple Silicon Macs, ensuring excellent performance even with large files.

1. Download the Mac version: Visit the official WPS website and download the WPS Office installer specifically designed for macOS.
2. Install on Apple Silicon: Open the downloaded file and drag the WPS Office icon into your Applications folder. It will run natively on your M1-M4 Mac.
3. Open your large documents: Launch WPS Writer and open your heavy .docx files to experience smooth scrolling and fast editing with minimal RAM usage.

Lightweight installer and lower memory footprint compared to traditional Office suitesFully compatible with Microsoft Word (.docx), Excel (.xlsx), and PowerPoint (.pptx) formatsHighly optimized for Apple Silicon (M1-M4) for lightning-fast launch and editing speedsClean, familiar interface that requires zero learning curve to master

microsoft office alternative - wps office

Frequently Asked Questions

Is 8GB of RAM enough for Microsoft Word on an M-series Mac?

For standard document editing and everyday tasks, 8GB is generally sufficient due to macOS's efficient memory management. However, if you regularly work with massively complex documents, heavy graphics, or active citation add-ins while multitasking, upgrading to 16GB will prevent swap-memory slowdowns.

Does Microsoft Word run natively on Apple Silicon Macs?

Yes, Microsoft offers a native Apple Silicon version of Office. You can verify this by locating Microsoft Word in your Applications folder, pressing Command+I to 'Get Info', and checking if the 'Kind' says 'Application (Apple)' rather than 'Intel'.

Why is Word using so much memory on my Mac?

High RAM consumption in Word is often caused by extremely large embedded uncompressed images, active third-party add-ins (like EndNote or Mendeley), or keeping multiple massive documents open simultaneously. Updating to the latest version can also resolve memory leak issues.

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