How To'sMining

Best GeForce RTX 3070 LHR Overclock Settings for Mining Ethereum

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To help get GeForce GPUs in the hands of gamers, NVIDIA announced new “Lite Hash Rate” GeForce graphics cards in May 2021. One of these was also GeForce RTX 3070, which up until now, could boast with very good ETH mining hashrate. On paper, the new GeForce RTX 3070 features the same specs as the non-LHR variant. It packs 5,888 CUDA cores, 184 Tensor cores, as well as 8GB of GDDR6 VRAM, and can deliver ultimate 1440p gaming experience, as well as pretty decent 4K gaming experience. However, when it comes to mining, things are much more different now.

Read also: Best Power Supply (PSU) for Mining Cryptocurrency in 2021

Compared to the original GeForce RTX 3070, the new RTX 3070 LHR features a built-in cryptocurrency mining limiter which negatively affects the card’s Ethereum mining performance. According to NVIDIA, the new RTX 3070 LHR is able to deliver only half of the ETH hashrate of the original RTX 3070, thus being much less appealing for purchase by cryptocurrency miners. In particular, the RTX 3070 LHR is only able to deliver 28 MH/s on Ethash algorithm, while the non-LHR card could deliver 58.10 MH/s at stock settings. The built-in mining limiter also appears to affect the card’s performance while mining other cryptocurrenices, such as RavenCoin (RVN).

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Update 06 Oct 2021: We strongly recommend using the latest version of NBMiner or GMiner miner if you plan to mine Ethereum with the RTX 3070 LHR. These miners partially bypass the card’s built-in mining limiter, thus allowing the card to deliver up to 47% higher mining hashrate.

Fortunately enough, in the past few months there has been a boom of new cryptocurrency miners that were able to partially unlock the mining potential of most NVIDIA’s LHR graphics cards. The list also includes the GeForce RTX 3070 LHR, which is now able to deliver up to 45 MH/s on Ethash algorithm, provided that you use the right overclock settings, as well as the right miner. In this quick guide we’ll show you how to unlock your RTX 3070’s mining performance, and increase your income from mining cryptocurrencies.

Best Overclock Settings for Mining Ethereum with GeForce RTX 3070 LHR

Before you start mining Ethereum with the GeForce RTX 3070 LHR, we recommend overclocking the graphics card in order to improve its mining performance as much as possible. This will also improve your card’s efficiency, as well as profitability. However, it must be noted that you should use overclocking at your own risk! ViCadia.com does not take any responsibilities related to overclocking or performing any adjustments to your computer. You have been warned!

Firstly, download the latest versions of the MSI Afterburner and HWiNFO64. Use MSI Afterburner to manually set core clock, memory clock and power limit values for your graphics card. We strongly recommend using the HWiNFO64 tool to closely monitor core clock and VRAM temperatures. If you notice any unusual behavior with your graphics card, immediately revert to default settings.

For purposes of this guide we’ve used MSI GeForce RTX 3070 LHR Gaming Z TRIO 8G graphics card. Down below you can find overclock setting which worked best for us. These OC settings may not necessarily work for your card. Each AIB variant of the RTX 3070 LHR performs slightly different.

Here are the overclock settings that worked best for our card:

  • Lock the GPU core clock using MSI Afterburner’s Curve Editor to:
    • If you are using NBMiner or T-Rex miner, then lock to 1020 MHz
    • If you are using GMiner, then lock to 1305 MHz
  • Increase Memory Clock value to:
    • If you are using NBMiner or GMiner, then increase to +1250 MHz
    • If you are using T-Rex miner, then increase to +1300 MHz
  • Set Power Limit to:
    • If you are using NBMiner or GMiner, then set to 78%
    • If you are using T-Rex miner, then set to 100%
  • Set Fan Speed to Auto

Ethereum Mining Performance & Benchmarks

In order to examine our card’s mining performance, we’ve used three different miners: NBminer 39.2, GMiner 2.67, and T-Rex 0.23.1 miner. We’ve tested the card’s mining performance only with overclocked settings applied. Fan speed, GPU core temperature, VRAM temperature, and total board power (TBP) draw were recorded with HWiNFO64 v7.12. Down below you can see our benchmark results.

RTX 3070 LHR (OC)Hashrate (avg.)GPU Temp (avg.)Fan Speed (avg.)Total Power DrawEff./Watt
NBMiner 39.2
(LHR 69)
42.30 MH/s62°C38%114 W371.0 kH/J
T-Rex 0.23.1
(--lhr_tune 5)
45.10 MH/s55°C67%113 W399.1 kH/J
GMiner 2.67
(-lhr_tune 2)
42.50 MH/s59°C36%88 W482.9 kH/J

All three tested miners were able to deliver fairly good mining performance. The T-Rex miner was able to deliver the highest average mining hashrate, however, the GMiner was much more efficient as it allowed our RTX 3070 LHR to achieve hashrate of 42.5 MH/s while consuming only 88 watts of power. It must be said that achieving 45 MH/s with T-Rex miner wouldn’t be possible if we hadn’t locked the GPU core clock to 1020 MHz, which in the end allowed us to run the miner in –lhr_tune 5 mode. The NBMiner also delivered pretty decent mining performance, however, it was the least efficient among three tested miners. Down below you can see a chart depicting more clearly the performance difference between all three miners we’ve used.

If you are striving to achieve the best possible mining performance with your GeForce RTX 3070 LHR graphics card, then using the GMiner seems like an obvious choice. Usually, the NBMiner is the best miner to use with LHR graphics cards, however, in case of the RTX 3070 LHR, it is the least efficient miner. Even the T-Rex miner seems like a better choice, despite the increased fan noise caused by higher fan speed levels.

With this level of mining performance, the RTX 3070 LHR is much closer to its non-LHR cousin, however, there’s still a lot of progress to be made in terms of squeezing out the maximum mining potential out of this card. Right now, the RTX 3070 LHR is able to mine Ethereum more efficiently than the AMD Radeon RX 6700 XT which, overall, isn’t too bad, given that the RX 6700 XT costs roughly the same as the RTX 3070 LHR.

Screenshot from one of our previous test runs with NBMiner 39.2

We certainly hope that in the near future we will see even better mining results with updated cryptocurrency miners. Right now, investing into a brand new GeForce RTX 3070 LHR doesn’t seem like a bad decision, especially since it can deliver 42 MH/s for a total power consumption of only 88 watts. The new RTX 3060 LHR also seems like a pretty decent alternative, especially if you prefer mining altcoins such as Ergo or RavenCoin.

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About author
Frank is the Editor in Chief at ViCadia. He is an avid PC gamer, as well as a tech enthusiast. Besides being a tireless writer, he is also ViCadia’s web developer.
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