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Ethereum Mining Speed Issues with AMD HD6850
Ethereum mining has long been a popular and profitable activity for those with the necessary hardware and knowledge. However, recently, many Ethereum miners have reported problems with their Radeon HD 6800 series graphics cards, including the HD 6850 model. Despite its advertised mining speed of over 200,000 hashes/s (kH/s), some users are experiencing slow performance when running a miner like CGMiner.
According to a comparison of various mining hardware at Litecoin.info/Mining_Hardware_Comparison, the HD 6800 series is indeed capable of producing high mining speeds. In fact, it is conceivable that the problem lies in the management of power supply and cooling of the GPU, rather than the actual computational power.
CGMiner Output Analysis
If you take a closer look at the output of the CGMiner setup, you will see some discrepancies between the advertised performance (17.28 kH/s) and the actual performance (14.39 kH/s). This suggests that there may be a power management issue or that the GPU is not properly cooled.
AMD HD6850 Specifications
To put things into perspective:
- AMD Radeon RX 6800 XT: 1406 MHz, 11.1 TFLOPS
- AMD Radeon RX 6750M: 1705 MHz, 10.3 TFLOPS
As you can see, the HD 6850 is significantly lower in terms of clock speed and performance compared to its higher-end counterparts.
CGMiner Version
You also mentioned that the CGMiner version is 3.5.0, which suggests that you are running a relatively recent release. However, it is worth noting that older versions may not be as optimized for high-performance mining as newer releases.
Possible Causes and Solutions
Based on the information available, here are some possible causes for slow performance:
- Power Management: Make sure your power supply can handle the increased power requirements of the HD 6850.
- Cooling Issues
: Make sure your GPU has adequate cooling to prevent overheating.
- Overclocking: Make sure you do not overclock your CPU or GPU beyond the recommended specifications.
To resolve this issue, you may want to consider:
- Reducing Power Consumption
: If possible, try to reduce the power consumption of your power supply or upgrade it.
- Improve cooling: Invest in a good quality air cooler for your GPU.
- Optimize overclocking: Be careful when overclocking and follow the proper guidelines.
In summary, while the HD 6850 may not be able to deliver the mining speeds advertised by its competitors, there are potential causes and solutions that can help alleviate performance issues. If you are experiencing slow performance, I recommend reaching out to a more experienced miner or looking into ways to improve your GPU’s cooling and power management.
Update: For more information on mining Ethereum with AMD GPUs, visit [ethereum.org]( and [miningledger.org](