What Is a LHR Graphics Card
Starting in February 2021, NVIDIA started limiting the GPU mining hash rate. They published an article in their blog titled GeForce Is Made for Gaming, CMP Is Made to Mine.
In May 2021, NVIDIA published another article titled A Further Step to Getting GeForce Cards into the Hands of Gamers. This article talks about lowering the hash rate on the Ethash algorithm for the GeForce RTX 3080, 3070, and 3060 Ti. These models became available at the end of May 2021 and were marked with a “Lite Hash Rate” or “LHR” identifier.
At the end of May 2021, NVIDIA announced the GeForce RTX 3080 Ti and GeForce RTX 3070 Ti. You can read the full announcement here.
These GPUs weren’t marked as LHR, but even before the release, there were rumors online about the limited hash rate on Ethash. The rumors about LHR were confirmed after the release and testing.
The active expert discussion of the term LHR started in May 2021.
Test Mining Rig. Estimating Potential Max Hash Rate and LHR Impact
Here is the the configuration of the mining rig we used for this test:
- Motherboard: BIOSTAR Hi-Fi B85S2
- CPU: Intel Pentium G3220
- Memory: 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 were connected to the motherboard, each through the riser PCI-E X16-X1.
- OS: Windows 10
- Nvidia drivers: 512.15
- Overclocking: MSI Afterburner
- Monitoring: GPU-Z
Testing was held on three different rigs with the same setup, indoors, with the room temperature at +15 °C (59 °F).
We already described how we estimated the potential max hash rate for the RTX 3080 Ti on Ethash and Etchash algorithms in the article titled How to Increase Mining Hash Rate. Unlocking LHR Graphics Cards with Gminer.
The potential max hash rate without LHR lock on Ethash and Etchash is 116 MH/s. LHR lock causes the hash rate to drop to 64 MH/s (by 45%).
NBMiner: Review & Testing
NBminer is a universal program for cryptocurrency mining on GPUs that supports both AMD and NVIDIA. The mining program has been in development since 2018. As of now, NBminer supports such popular algorithms as Ethash, Kawpow, Octopus, Autolykos2, Cuckoo, and Beamv3.
The miner developers keep in touch with their users on popular platforms and social media.
NBminer Release History
On August 15, 2021, NBminer developers released the v.39.0, the first mining program that unlocked LHR to 70% of the potential max hash rate….
Click Here to Read the Full Original Article at Crypto Mining Blog…