Power Targeting: A New Foundation for Luxor Firmware

Background

LuxOS has always centered on one objective: give operators precise, predictable control over their mining fleets. Features like Autotuner and Advanced Thermal Management (ATM) introduced structured ways to manage frequency, temperature, and stability across different models. Preset Profiles provided simple step configurations for uniform behavior at scale.

The legacy system was built around a frequency-first model that served miners well for years. The operator picked a frequency (MHz), and power consumption (Watts) followed. This worked reliably, but it left some optimization room (and therefore sats) on the table. In practice, rising environmental temperature could push power draw out of bounds, trigger PSU protections, and produce large oscillations during heat events. Mixed fleets were difficult to align because each model consumed different wattage at the same profile. Efficiency tuning was constrained to discrete 25MHz steps instead of exact J/TH targets.

LuxOS’ new feature — Power Targeting — replaces that architecture.

What’s New with Power Targeting

Power Targeting introduces a watt-anchored control loop into LuxOS’s Autotuner. Instead of telling the miner how fast to run, you can now tell it how much power to consume.

LuxOS continuously adjusts frequency and voltage to hold machines at the operator-defined watt target, regardless of temperature swings. This behavior is integrated with the existing ATM system — meaning the tuner continues to enforce thermal limits, stability thresholds, and safety rules — but now with an exact read on the miner’s electricity consumption. 

On supported models, Preset Profiles are now interpreted as predefined power targets rather than frequency presets. Operators can still select overlock & underclock profiles (+1, -2, etc.) but under the hood, LuxOS is managing wattage directly.

Supported models at launch: 

• S19 XP 
• S19j XP 
• T21
• S21 
• S21+
• S21 Pro
• S21 XP
• S21+ Hydro
• S21 XP Hydro
• U3S21EXPHydro

All unsupported miners continue behaving exactly as they do today — same profiles, same tuning logic, same workflows. Additional models will be released soon. 

To find out more, read through the rollout details in the LuxOS Changelog and watch this short walkthrough video.

Why This Matters

Power consumption determines financial outcomes, thermal behavior, electrical safety, and uptime. By controlling it directly, LuxOS unlocks a range of benefits:

1. Stability During Heat Events

Power consumption is heat. In the legacy Autotuner system, rising temperature could cause power to drift upward, forcing ATM to make a large reactive adjustment at heat limit thresholds. This would produce oscillations: underclock → cool → overclock → reheat.

With Power Targeting, the miner never drifts into this feedback loop. As temperature begins rising, power begins rising, and Autotuner proactively adjusts to immediately hold wattage constant. Temperatures stabilize into a narrow band instead of swinging up and down.

2. Protection Against PSU Shutdowns

Rising heat can push miners into the PSU’s hardwired Over-Power Protection (OPP) zone. Once tripped, many units require manual power cycling.

Power Targeting preempts this by enforcing a fixed watt ceiling. The miner never approaches the protection threshold, eliminating shutdowns.

3. Mixed-Fleet Coordination

Different machines consume different wattage at the same profile. When operators need to run a facility at a fixed load, this model mismatch becomes unmanageable.

A watt-based target normalizes everything: any supported miner can be assigned the exact watt consumption needed to hit a site-level load plan.

4. Heat Recycling & BTU Planning

British Thermal Units (BTU) output is proportional to watt input. Sites recycling hashrate heat (e.g., district heating, greenhouses, hydronics, or low-grade industrial preheating) can now budget thermal output precisely instead of relying on approximate profile behavior.

5. Curtailment Without Cold Starts

During curtailment, fleets often shut down completely. This creates cold-start penalties and risks coolant temperature falling below restart thresholds for hydro-cooled systems.

With Power Targeting, operators can idle machines at an ultra-low power state, preserving the necessary internal heat and allowing instant ramp-up post-curtailment.

6. High-End Overclocks Near PSU Limits

Overclocking commonly trips OPP shutdowns as well. With Power Targeting, operators can safely sit just below the PSU limit and sustain maximal hashrate with a margin of safety.

7. Advanced Power Market Participation (Intelligent Mining)

Intelligent Mining workflows require precise power targeting. This unlocks a range of advanced power optimization strategies like demand charge avoidance, selective demand response, interval-based energy trading, and real-time load management.

What to Keep in Mind

• Supported models only: Power Targeting currently applies to the S19 XP, S19j XP, T21, S21, S21+, S21 Pro, S21 XP, U3S21EXPHydro, S21 XP Hydro, and S21+ Hydro.
• Profiles behave differently depending on support: – Unsupported models: profiles operate exactly as before. – Supported models: profiles now map to power targets, not frequency.
• Autotuner remains central: Power Targeting operates inside the same ATM safety framework described in LuxOS’ Autotuner and ATM Settings documentation.
• Profiles are still available: As documented in Preset Profiles, operators can continue using profile-based workflows. The underlying control logic simply changes for supported hardware.
• More models coming: Compatibility will expand across additional machines (Coming Soon™).

Conclusion

LuxOS’ latest Power Targeting feature turns the table and puts the watt in front of frequency, enabling machines to behave more predictably under heat, curtailment, load balancing, and overclocking scenarios. This sets the new standard for teams designing infrastructure around power capacity and consumption.

If you’d like to learn more about Luxor’s Bitcoin mining services, please reach out to [email protected] or visit https://www.luxor.tech.

About Luxor Technology Corporation 

Luxor delivers hardware, software, and financial services that power the global compute and energy industry. Its product suite spans Bitcoin Mining Pools, ASIC Firmware, Hardware trading, Hashrate Derivatives, Energy services, and a bitcoin mining data platform, Hashrate Index.

Disclaimer

This content is for informational purposes only, you should not construe any such information or other material as legal, investment, financial, or other advice.