The world of cryptocurrency mining has taken a significant turn with the latest update from T-Rex, a widely used mining software. The developer has officially announced that their software now supports dual mining to bypass the hashrate limitations on NVIDIA’s LHR (Lite Hash Rate) GPUs. This breakthrough effectively unlocks previously restricted mining performance on popular graphics cards such as the RTX 3060, 3070 Ti, 3080, and 3080 Ti.
This development marks a pivotal moment for miners seeking to maximize returns from hardware that was intentionally throttled by NVIDIA to discourage mass crypto mining during periods of GPU shortages.
Understanding NVIDIA’s LHR Technology
NVIDIA introduced the LHR (Lite Hash Rate) designation in 2021 as a response to widespread criticism over gamers being priced out of the market due to scalpers and miners buying up GeForce RTX 30-series GPUs. These cards were designed with an algorithmic limiter that reduced Ethereum (ETH) mining performance by up to 50%, making them less attractive for miners while theoretically preserving availability for PC gamers.
However, the mining community has long sought ways to circumvent these restrictions — and now, with T-Rex’s dual mining solution, they may have found a viable workaround.
How Dual Mining Works
Dual mining allows a GPU to simultaneously mine two different cryptocurrencies using separate portions of its computational power. In this case, T-Rex enables miners to allocate:
- 30% of GPU resources toward mining Ethereum (ETH)
- 70% of GPU resources toward mining alternative proof-of-work coins such as ERGO (ERG), Ravencoin (RVN), or Conflux (CFX)
By distributing the workload across multiple algorithms, the GPU avoids triggering NVIDIA’s detection mechanism for sustained high-intensity ETH mining, thereby evading the LHR throttle.
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Supported Cards and Hardware Requirements
T-Rex confirms compatibility with several key LHR models:
- GeForce RTX 3060
- RTX 3070 Ti
- RTX 3080
- RTX 3080 Ti
While these cards vary in base performance, they all share the same fundamental limitation: artificially capped ETH hashrates under normal mining conditions.
To run dual mining successfully, however, there is one critical hardware requirement: a minimum of 8GB VRAM. This makes lower-end variants like the original RTX 3060 (with 12GB) suitable, but rules out some cut-down models or older-generation GPUs.
Additionally, users must ensure their systems have adequate cooling and stable power delivery, as running dual algorithms can increase thermal load and power draw compared to single-algorithm mining.
Performance Gains and Profitability Analysis
Early reports from miners using T-Rex’s dual mining mode suggest notable improvements in overall profitability:
- ETH hashrate recovery: Up to 75–85% of non-LHR card performance when mining Ethereum alone.
- Additional income stream: Revenue from ERG, RVN, or CFX adds incremental gains without requiring extra hardware.
- Efficient resource use: By leveraging idle compute cycles on memory-intensive algorithms, dual mining optimizes utilization.
For example, an RTX 3080 LHR might achieve around 54–56 MH/s on ETH (vs. ~28 MH/s under full LHR lock) while also generating approximately 120–140 MH/s on KawPow (RVN) or 160–180 MH/s on Autolykos2 (ERGO).
When factoring in current market prices and network difficulty, many miners report a 25–40% increase in daily revenue compared to traditional LHR-limited ETH-only setups.
Why ERGO, Ravencoin, and Conflux?
The choice of secondary coins isn’t arbitrary. These networks offer characteristics ideal for dual mining:
- ERGO (ERG): Uses the Autolykos2 algorithm, which is memory-hard and GPU-friendly. It also emphasizes decentralization and long-term sustainability.
- Ravencoin (RVN): Based on KawPow, a variant of ProgPoW, designed to resist ASIC dominance and favor consumer GPUs.
- Conflux (CFX): Employs the Octopus algorithm, optimized for parallel processing and well-suited for modern NVIDIA architectures.
These coins maintain active communities, consistent block rewards, and exchange listings — making them practical choices for supplemental earnings.
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Frequently Asked Questions (FAQ)
Can I use dual mining on non-LHR cards?
Yes, dual mining works on both LHR and non-LHR GPUs. However, the primary benefit is unlocking higher ETH performance on LHR models. On non-LHR cards, it simply provides additional income from secondary coins.
Does dual mining reduce hardware lifespan?
There is no evidence that dual mining inherently shortens GPU life more than standard mining. As long as temperatures are kept below 75°C and power limits are managed responsibly, wear-and-tear remains within acceptable ranges.
Is dual mining still profitable after Ethereum’s shift to proof-of-stake?
Although Ethereum completed its transition to proof-of-stake in 2022, many forks and alternative networks continue supporting ETH proof-of-work (e.g., EthereumPoW). Additionally, dual mining focuses on other viable PoW chains like ERGO and Ravencoin — ensuring ongoing relevance.
Will NVIDIA release a patch to block this method?
It's possible. NVIDIA could theoretically update driver-level detection logic to identify dual mining patterns. However, given the company's reduced focus on consumer GPU mining restrictions post-2023, widespread countermeasures seem unlikely.
Do I need special settings in T-Rex to enable dual mining?
Yes. Users must manually configure the --dual-mode parameter along with appropriate intensity and memory tuning options. Sample configurations are available in the official T-Rex documentation.
Can I mine any coin pair with dual mining?
No. Compatibility depends on algorithmic differences and memory usage profiles. Currently, only specific combinations like ETH + ERGO/RVN/CFX are supported due to technical constraints.
The Future of GPU Mining Post-LHR
With tools like T-Rex effectively neutralizing LHR limitations, the playing field between miners and manufacturers appears to be shifting back in favor of users. This development may also influence future GPU design strategies from NVIDIA and AMD, particularly if demand for multi-algorithm flexibility grows.
Moreover, it reinforces the resilience of decentralized mining ecosystems — where innovation often outpaces corporate restrictions.
As long as proof-of-work networks remain active and economically viable, miners will continue finding creative ways to optimize performance. Dual mining represents not just a technical workaround, but a broader trend toward smarter, more efficient resource utilization in decentralized computing.
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Final Thoughts
The ability of T-Rex to bypass NVIDIA’s LHR restrictions through dual mining is more than just a win for individual miners — it's a testament to the adaptability of open-source software and community-driven innovation. For those holding LHR-limited GPUs, this update breathes new life into what many considered suboptimal mining hardware.
With proper configuration and monitoring, miners can now extract significantly greater value from their rigs while contributing to multiple blockchain networks simultaneously.
As always, success in crypto mining depends not only on hardware and software but also on staying informed about technological shifts — and knowing when to act.
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