MorePowerTool

MorePowerTool (MPT) is a free Windows utility from igor’sLAB that edits the power and voltage limits AMD’s driver applies to Radeon graphics cards, without flashing the card’s BIOS. Most people looking for a MorePowerTool download run Polaris, RX 5000 or RX 6000 cards and want lower power draw, a different voltage curve or limits that the standard Radeon software does not expose.

For a mining rig on Windows, that usually means efficiency rather than raw speed: cutting power where the algorithm does not need it, holding temperatures down and keeping fans quieter. MPT works on the driver side, so it is less risky than editing a VBIOS, but it can still push a card past safe values. Treat every change as an experiment.

MorePowerTool at a glance

What it does

• Reads the PowerPlay table of a selected Radeon card and shows its power, current, voltage, clock and fan limits.
• Writes a modified table to the Windows registry as a SoftPowerPlayTable (SPPT), which the AMD driver uses instead of the values from the BIOS.
• Can load a VBIOS file as a starting point, but does not modify or flash the BIOS on the card.
• Adjusts power limits, current limits (TDC), voltage limits, clock limits and fan behaviour, depending on the GPU generation.
• Exposes extra options such as ULV (ultra-low voltage) settings on supported cards.
• Removes everything with one button (“Delete SPPT”), which returns the card to its BIOS defaults after a reboot.
• Saves table settings to a file so you can reuse a tested profile on identical cards.

How miners use it

Lower the power limit and voltage for efficiency

1. Run MorePowerTool as Administrator and pick the card from the device list.
2. Click “Load” and select a saved copy of that card’s BIOS (or start from the values MPT reads).
3. Reduce the power limit and the maximum GPU or SoC voltage in small steps.
4. Click “Write SPPT”, close the tool and reboot.
5. Run your miner for several hours and watch for errors, rejected shares and crashes before going lower.

Copy a tested profile to identical cards

1. When one card is stable, save its settings to a file.
2. Select the next card of exactly the same model, load the saved file and write the SPPT.
3. Test each card on its own: two cards of the same model can need different voltages.

Undo all changes

1. Open MorePowerTool and select the card.
2. Click “Delete SPPT” and reboot. The driver goes back to the limits stored in the card’s BIOS.

A driver reinstall with a clean-up tool can also remove the registry entries, so re-check your settings after every driver update.

Install and first run

Windows only. MPT is distributed by igor’sLAB as a Windows program and needs the AMD Radeon driver installed. It changes driver behaviour, not the card itself, so the settings apply only on the Windows installation where you wrote them.

Get it from the source. igor’sLAB publishes MPT in its own download area together with a mandatory disclaimer. Copies on other sites, “portable” repacks and GitHub uploads are not from the developer; avoid them.

Back up first. Save each card’s BIOS with AMDVBFlash before you start, and write down the stock values MPT shows. A copy of the original BIOS is also the safest file to load into MPT as a starting point.

Drivers. AMD’s drivers have limited what SoftPowerPlayTables can change since 2020, especially on RDNA 2 cards, so some values may have no effect on newer driver versions. If a change does nothing, that is usually why.

Mining OS users. Linux-based mining systems do not use the Windows registry, so MPT settings do not carry over. Those systems have their own AMD tuning options.

Limitations

• Pushing power, current or voltage above factory values can damage the card, its VRM or your PSU, and voids most warranties. igor’sLAB describes MPT as experimental and not meant for permanent operation with values outside the manufacturer’s spec.
• Supports Polaris, Vega 20, RDNA 1 and RDNA 2 only. RX 7000 and RX 9000 cards are not covered; igor’sLAB offers MoreClockTool (MCT) for overclocking newer cards and RebelsTool on Linux for RDNA 4 and some RDNA 3 models.
• Windows only, with no command-line interface for remote rig management.
• Closed source, with no public changelog for each build.
• Driver updates can ignore or reset some values.

MorePowerTool vs alternatives

MPT tunes the driver; AMDVBFlash (ATIFlash) writes BIOS images to the card. On RX 5000 and RX 6000 cards, signed BIOSes mean MPT is the practical way to change limits, while AMDVBFlash is for backups and official updates. The standard Radeon software tuning page is enough for many rigs and carries no extra risk, so try it first. On Linux, mining systems such as Hive OS provide their own AMD overclock and undervolt settings per card.

FAQ

Where do I get the MorePowerTool download?

From the igor’sLAB download area, which is the only official source. Read the disclaimer there and confirm that your GPU generation is listed.

Does MorePowerTool work on NVIDIA cards?

No. It reads and writes AMD PowerPlay tables only. NVIDIA cards are tuned through the NVIDIA driver and tools built on it.

Is there a MorePowerTool for Linux?

No. MPT is Windows only. igor’sLAB publishes a separate Linux tool, RebelsTool, aimed at RDNA 4 and some RDNA 3 cards.

Does MorePowerTool work on the RX 580 and RX 6600?

Yes, both belong to supported generations: the RX 580 is Polaris and the RX 6600 is RDNA 2. On RDNA 2 some values may be limited by newer AMD drivers.

Is MorePowerTool safe?

The tool does not flash the BIOS and changes can be removed with “Delete SPPT”, but values above stock can still damage hardware. Change one setting at a time and stay within the manufacturer’s limits.

Will MorePowerTool make my mining rig profitable?

It can reduce power draw for the same work, but it cannot make mining profitable on its own. That depends on your electricity price, the coin price and your hardware.

Do I need to reboot after “Write SPPT”?

Yes. The driver reads the SoftPowerPlayTable when it starts, so restart the PC after writing or deleting it.

Last checked against official sources: 1 October 2026 (developer website: igorslab.de). Versions and licence terms change — confirm on the developer's site before deploying in production.