What Is a LHR Graphics Card
Beginning in February 2021, NVIDIA began limiting the GPU mining hash charge. They revealed an article of their weblog titled GeForce Is Made for Gaming, CMP Is Made to Mine.
In Might 2021, NVIDIA revealed one other article titled A Additional Step to Getting GeForce Playing cards into the Palms of Players. This text talks about reducing the hash charge on the Ethash algorithm for the GeForce RTX 3080, 3070, and 3060 Ti. These fashions turned accessible on the finish of Might 2021 and had been marked with a “Lite Hash Charge” or “LHR” identifier.
On the finish of Might 2021, NVIDIA introduced the GeForce RTX 3080 Ti and GeForce RTX 3070 Ti. You may learn the total announcement right here.
These GPUs weren’t marked as LHR, however even earlier than the discharge, there have been rumors on-line concerning the restricted hash charge on Ethash. The rumors about LHR had been confirmed after the discharge and testing.
The lively professional dialogue of the time period LHR began in Might 2021.
Check Mining Rig. Estimating Potential Max Hash Charge and LHR Impression
Right here is the the configuration of the mining rig we used for this check:
- Motherboard: BIOSTAR Hello-Fi B85S2
- CPU: Intel Pentium G3220
- Reminiscence: DDR3 SDRAM Kingston 4Gb
- HDD: Seagate Barracuda 7200.12 160Gb
- PSU: EVGA 1000 GQ 80+ GOLD 1000W
- GPU: EVGA GeForce RTX 3080 Ti FTW3 ULTRA GAMING
- Two GPUs had been linked to the motherboard, every by way of the riser PCI-E X16-X1.
- OS: Home windows 10
- Nvidia drivers: 512.15
- Overclocking: MSI Afterburner
- Monitoring: GPU-Z
Testing was held on three totally different rigs with the identical setup, indoors, with the room temperature at +15 °C (59 °F).
We already described how we estimated the potential max hash charge for the RTX 3080 Ti on Ethash and Etchash algorithms within the article titled How you can Improve Mining Hash Charge. Unlocking LHR Graphics Playing cards with Gminer.
The potential max hash charge with out LHR lock on Ethash and Etchash is 116 MH/s. LHR lock causes the hash charge to drop to 64 MH/s (by 45%).
NBMiner: Overview & Testing
NBminer is a common program for cryptocurrency mining on GPUs that helps each AMD and NVIDIA. The mining program has been in growth since 2018. As of now, NBminer helps such fashionable algorithms as Ethash, Kawpow, Octopus, Autolykos2, Cuckoo, and Beamv3.
The miner builders be in contact with their customers on fashionable platforms and social media.
NBminer Launch Historical past
On August 15, 2021, NBminer builders launched the v.39.0, the primary mining program that unlocked LHR to 70% of the potential max hash charge. The miner hash charge on Ethash ranged between 77 MH/s and 78 MH/s. Reminiscence Controller Load and GPU Load charts had been secure, and the Board Energy Draw chart – with slight leaps.
Such settings permit NBminer v.39.0 to unlock LHR to 67% of the potential max hash charge.
On November 24, 2021, the builders launched NBminer v.40.1 which tremendously improved the efficiency of LHR graphics playing cards. The miner hash charge on Ethash ranged between 83 MH/s and 85 MH/s. Reminiscence Controller Load and GPU Load charts had been secure, and the Board Energy Draw chart – with slight leaps. Such settings allowed NBminer v.40.1 to unlock LHR to 72% from the potential max hash charge.
NBminer v.41.0 Overview
On Might 8, 2022, the builders introduced NBminer v.41.0. Click on right here to obtain the miner and examine its options.
This model promised to unlock LHR to 100%. To realize this, the builders advocate utilizing the 512.15 video driver for Home windows and 510.60 video driver for Linux, in addition to working the mining program as admin. For higher stability, you also needs to decrease GPU reminiscence overclocking by 100–200 MHz (as compared with the earlier variations).
We launched the mining program on the primary rig with the next GPU settings: PL(%): 70, CC(MHz): +0, MC(MHz): +1000.
Bat-file:
nbminer -a ethash -o stratum+tcp://eth.2miners.com:2020 -u WALLET_ADDRESS.RIG_08 --temperature-limit 71 --temperature-start 50 --log
pause
Right here is the log file information proper after the miner launch and after 20 hours of operation:
We encountered ‘Allow LHR unlocker’ solely as soon as, on the very starting of the log file. We didn’t encounter ‘LHR lock’ within the log file and didn’t restart the miner.
The miner was lively for 22 hours and 21 minutes. The miner hash charge on Ethash ranged between 115 MH/s and 116 MH/s. Reminiscence Controller Load and GPU Load charts had been secure, and the Board Energy Draw chart – with slight leaps.
Based mostly on the variety of shares despatched to the pool, we estimated the miner hash charge. Preliminary information: 2174 shares (GPU0: 1122; GPU1: 1052) in 22.35 hours, share issue is 8726 M. We multiplied the variety of shares per second by share issue and acquired 235.8 MH/s. It is a hash charge of two GPUs. We are able to additionally estimate the hash charge per GPU: GPU0 – 121.7 MH/s, GPU1 – 114.1 MH/s.
We advocate extending the testing interval to get statistically appropriate outcomes: every card ought to ship over 5000 shares to the pool.
Beneath is the Stats web page of the pool with the outcomes of the rig operation.
We launched the mining program on the second rig with the next GPU settings: PL(%): 70, CC(MHz): +0, MC(MHz): +1100.
Bat-file:
nbminer -a ethash -o stratum+tcp://eth.2miners.com:2020 -u WALLET_ADDRESS.RIG_09 --temperature-limit 71 --temperature-start 50 --log
pause
Right here is the log file information proper after the miner launch and after 20 hours of operation:
We encountered ‘Allow LHR unlocker’ solely as soon as, on the very starting of the log file. We didn’t encounter ‘LHR lock’ within the log file and didn’t restart the miner.
The miner was lively for 26 hours and 50 minutes. The miner hash charge on Ethash ranged between 117 MH/s and 118 MH/s. Reminiscence Controller Load and GPU Load charts had been secure, and the Board Energy Draw chart – with slight leaps.
Based mostly on the variety of shares despatched to the pool, we estimated the miner hash charge. Preliminary information: 2612 shares (GPU0: 1308; GPU1: 1304) in 26.83 hours, share issue is 8726 M. We multiplied the variety of shares per second by share issue and acquired 235.9 MH/s. It is a hash charge of two GPUs. We are able to additionally estimate the hash charge per GPU: GPU0 – 118.2 MH/s, GPU1 – 117.8 MH/s.
We advocate extending the testing interval to get statistically appropriate outcomes: every card ought to ship over 5000 shares to the pool.
Beneath is the Stats web page of the pool with the outcomes of the rig operation.
We arrange GPUs on the following rig by fixing GPU frequency and voltage. We used the Voltage/Frequency Curve Editor in MSI Afterburner.
We launched the mining program on the third rig with the next GPU settings: PL(%): 80, CC (MHz): -109 repair Voltage(mV) 750, MC (MHz): +1000.
If you repair the voltage, select some extent that can allow you to run the miner with a Core Clock (CC) of 1300–1350 MHz.
Bat-file:
nbminer -a ethash -o stratum+tcp://eth.2miners.com:2020 -u WALLET_ADDRESS.RIG_10 --temperature-limit 71 --temperature-start 50 --log
pause
Right here is the log file information proper after the miner launch and after 20 hours of operation:
We encountered ‘Allow LHR unlocker’ solely as soon as, on the very starting of the log file. We didn’t encounter ‘LHR lock’ within the log file and didn’t restart the miner.
The miner was lively for 27 hours and 46 minutes. The miner hash charge on Ethash ranged between 115 MH/s and 118 MH/s. Reminiscence Controller Load and GPU Load charts had been secure, and the Board Energy Draw chart – with slight leaps.
Based mostly on the variety of shares despatched to the pool, we estimated the miner hash charge. Preliminary information: 2574 shares (GPU0: 1283; GPU1: 1291) in 27.77 hours, share issue is 8726 M. We multiplied the variety of shares per second by share issue and acquired 224.7 MH/s. It is a hash charge of two GPUs. We are able to additionally estimate the hash charge per GPU: GPU0 – 112 MH/s, GPU1 – 112.7 MH/s.
We advocate extending the testing interval to get statistically appropriate outcomes: every card ought to ship over 5000 shares to the pool.
Beneath is the Stats web page of the pool with the outcomes of the rig operation.
We examined the miner with HiveOS.
The miner was lively for five hours and 6 minutes. The miner hash charge on Ethash ranged between 117 MH/s and 119 MH/s.
Based mostly on the variety of shares despatched to the pool, we estimated the miner hash charge. Preliminary information: 741 shares (GPU0: 255; GPU1: 233; GPU2: 253) in 5.1 hours, share issue is 8726 M. We multiplied the variety of shares per second by share issue and acquired 352.2 MH/s. It is a hash charge of three GPUs. We are able to additionally estimate the hash charge per GPU: GPU0 – 121.2 MH/s, GPU1 – 110.7 MH/s, GPU2: 120.2 MH/s.
We advocate extending the testing interval to get statistically appropriate outcomes: every card ought to ship over 5000 shares to the pool.
Such settings permit NBminer v.41.0 to unlock LHR to 100% of the potential max hash charge.
NBminer v.41.3 Launch
As of now, the newest miner model is NBminer v.41.3. The LHR unlocker is now way more secure, the failure problem on AMD graphics playing cards has been resolved, and it’s additionally extra suitable with tools low in RAM.
You must use the 512.15 driver on Home windows and 510.60 on Linux. You may obtain the mining program on the official NBMiner web site:
Last Conclusions and Options
NBminer presents a common resolution to unlock LHR graphics playing cards.
NBminer v.39.0 unlocked LHR to 67% of the max potential hash charge on Ethash, NBminer v.40.1 – to 72% of the max potential hash charge, and the newest NBminer v.41.3 — to 100%.
Please word that we didn’t check GPUs with excessive settings. Chances are you’ll as effectively get secure outcomes by utilizing totally different settings. Ensure to overclock and check every GPU individually.
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Be a part of our Ethereum Mining Pool.
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