Custom Resolution Utility - CRU

Free tool for creating custom monitor resolutions on Windows PCs.

Overview

Custom Resolution Utility (CRU) is a free Windows application by ToastyX that enables users to define new display modes by writing EDID overrides directly into the registry. The program focuses on adding true monitor resolutions rather than scaled variants, which means lower resolutions can be enlarged by the graphics driver while higher entries require a panel that can natively handle them.

Compatibility

CRU supports AMD/ATI and NVIDIA graphics cards. Intel GPUs block EDID overrides, so the utility will not function on systems running integrated Intel graphics or on many laptops that switch between discrete and integrated adapters.

Interface and Workflow

The compact window lists existing detailed, standard, and extension block resolutions. Up to six detailed resolution slots are available, and the first slot becomes the monitor’s primary mode. Values such as horizontal and vertical active pixels, sync width, blanking intervals, polarity, and refresh rate can be edited directly. For convenience, timing presets for LCD and CRT panels are provided, removing the need to calculate porch and sync values manually. Users can also import external EDID files to overwrite current settings.

Feature Highlights

• Adds new resolutions without touching .inf driver files.

• Lets the graphics driver automatically expose lower scaled modes.

• Offers predefined timings plus full manual control for advanced users.

• Allows creation of standard resolutions aimed at CRT displays.

• All changes are stored in the registry and can be reverted by deleting the override.

Performance and Reliability

In practice, resolutions added through CRU become available after a quick graphics driver restart, with no noticeable performance overhead. Because the tool interacts only with registry entries, it remains lightweight and portable. Actual success depends on the monitor’s native capabilities and GPU limits; requesting unsupported timings can lead to a blank screen until Windows reverts or Safe Mode is used.

Limitations

CRU cannot downscale higher-than-native resolutions, does not interface with Intel GPUs, and offers no automatic safeguard against impossible timings. The learning curve may feel steep for newcomers, especially when terms like porch and sync polarity appear.