What is the new OCuLink module for Framework Laptop 16?

It's a custom-made expansion module allowing high-speed external GPU connections to the Framework Laptop 16.

Can Framework Laptop 16 run desktop graphics cards?

Yes, with the custom OCuLink module, Framework Laptop 16 can run desktop GPUs with nearly identical performance.

How does the OCuLink module improve Framework Laptop performance?

OCuLink provides a high-bandwidth connection, equivalent to PCIe x8 speeds, for external graphics cards.

Home / Technology / DIY OCuLink Module Unleashes Laptop eGPU Power

DIY OCuLink Module Unleashes Laptop eGPU Power

4 Dec, 2025

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Summary

Custom OCuLink module enables desktop-class external GPU performance.
OCuLink connection provides up to x8 PCI Express speeds for GPUs.
RTX 4070 desktop graphics card ran with no performance loss.

DIY OCuLink Module Unleashes Laptop eGPU Power

A Framework Laptop 16 has been significantly enhanced by a user who developed a custom OCuLink expansion module. This innovative DIY project leverages readily available components and custom soldering to enable high-speed external GPU connections. The module offers nearly desktop-level graphics performance, a major milestone for portable computing.

The OCuLink connection acts as a high-bandwidth pipeline, effectively functioning as PCI Express over a fiber optic cable. This allows for substantial data transfer, rivaling modern standards like Thunderbolt 5, and supports speeds up to PCIe 5. The module was successfully tested with an RTX 4070 desktop graphics card, showing no discernible performance hit compared to its desktop integration.

This development highlights the extreme customizability of Framework laptops, which are designed for modularity and user upgrades. While Framework itself doesn't offer OCuLink connectivity, community innovation has filled the gap. This achievement opens the door for users to potentially pair their Framework laptops with top-tier GPUs, maximizing portable power without sacrificing performance.