VGTab (VegaTab)

A macOS app for generating and applying custom AMD Vega Soft PowerPlay Tables. Tune your GPU's core clocks, core voltages, memory clocks, memory voltages, fan curves, target temperature, and TDC — all through a simple GUI with sliders and charts.

Originally created by lihaoyun6, this fork has been modified to run on macOS 15.1.1 (Sequoia) and later, with additional quality-of-life features for iterative tuning.

Supported GPUs

• Vega 64
• Vega 56
• Vega Frontier Edition (FE)
• Vega FE 8G
• Vega 64 Liquid Cooling
• Vega FE Liquid Cooling
• WX 9100
• WX 8200

What's Changed

macOS 15.1.1+ Compatibility

The minimum system version has been updated to macOS 15.1 to support modern Sequoia builds. The kext generation and plist patching pipeline has been verified to work on this version.

Save & Load Settings

To make trial-and-error tuning less painful, Save Settings and Load Settings buttons have been added to each GPU's configuration page:

• Save Settings — Exports all current slider/input values (clocks, voltages, fan speeds, temperature, TDC) to a human-readable .txt file (VegaTab_<GPU>_settings.txt). This file is downloaded via the browser and also saved to your Desktop when building a PowerPlay table.
• Load Settings — Opens a file picker to import a previously saved .txt settings file. All sliders, inputs, and the chart update instantly to reflect the loaded values.

This means you can:

1. Configure your settings and Save them before applying.
2. Build and test the PowerPlay table.
3. If something isn't right, tweak values and save a new version.
4. Easily Load any previous configuration to compare or roll back.

No more manually re-entering dozens of values between attempts.

How to Use

1. Open VGTab.app.
2. Select your GPU model.
3. Adjust core clock, core voltage, memory clock, memory voltage, fan, and power settings using the sliders or numeric inputs.
4. Optionally Save Settings to preserve your configuration.
5. Click Build Powerplay Table to generate a custom kext (VegaTab_<GPU>.kext) on your Desktop.
6. Load the kext using your preferred method (e.g., OpenCore, or manually via kextload).

My Current Best Settings (Vega 64)

These are the settings I'm currently running on my Vega 64. They prioritize stability with a moderate undervolt and slightly boosted top-end clocks:

Parameter	Value
Core Voltage (P0–P7)	800, 900, 950, 1000, 1000, 1000, 1050, 1075 mV
Core Clock (P0–P7)	852, 991, 1084, 1138, 1200, 1401, 1536, 1660 MHz
Memory Voltage (P3)	1350 mV
Memory Clock (P0–P3)	167, 500, 800, 1050 MHz
Fan Idle Speed	2200 RPM
Fan Target Speed	3000 RPM
Fan Min Speed	400 RPM
Fan Max Speed	4900 RPM
Fan Sensitivity	4836
Target Temperature	70°C
TDC (Power)	42%

Key Tuning Notes

• P4–P5 voltages held at 1000 mV — flat voltage curve through the mid-range clocks reduces power draw and heat without sacrificing stability.
• P7 clock boosted to 1660 MHz — slightly above stock for extra performance headroom.
• P3 memory clock raised to 1050 MHz — pushes HBM2 bandwidth above the default 945 MHz.
• TDC at 42% — lower than the default 50%, reducing total power consumption and thermals while keeping clocks sustainable under load.
• Target temp 70°C with a 3000 RPM target fan speed — keeps the card cool without excessive noise.

Disclaimer: These settings work for my specific card. Silicon lottery varies — start conservative and test stability before daily driving. Always keep a backup of your working settings using the Save feature.

Credits

• Original VGTab by lihaoyun6
• Uses Chart.js for the interactive voltage/clock graph