Here's a question:
If my biggest and main problem with mining is heat, whats the best way to lower the heat from GPUs?
Should I use lower clocks, is there a command line which tells the miner to mine slower/less intense...?
I'm willing to sacrifice the hash speed for lower temps.
Thanks!
I dual mine which generates a lot of heat. I find lowering the power limit has the biggest effect on lowering temperatures and power usage, while affecting hash rate the least. Next is undervolting the core and the least effect on lowering temperatures is adjusting the clock speed, which also affects the hash rate the most compared to adjusting the power limit and undervolting. Otherwise you can also lower the temperature by increasing the airflow to dissipate the air around the rig. I use a box fan which is cheap and does a good job. |
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With the latest AMD drivers you need to toggle compute mode from graphics in AMD settings. https://support.amd.com/en-us/kb-articles/Pages/DH-024.aspxYou can disable drivers updates in Windows Update, so the GPU drivers are not updated automatically. gpedit ==> Computer Configuration ==> Administrative Templates ==> Windows Components ==> Windows Update and set 'Do not include drivers with Windows Update' to enabled. Also AFAIK, with Windows 7 the official blockchain drivers from AMD are broken. The only blockchain drivers reported to work on Windows 7 are the Robinhood drivers. https://bitcointalk.org/index.php?topic=2068446.0 |
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Unless you are talking about new coins that are yet to be on an exchange, you are better off mining the most profitable coins for your rig. If you want to speculate on other coins that are less profitable to mine, you can get more coins by mining the most profitable coin and trading for the other coins. Take for example a coin like UBQ, which has a lot less difficulty than ETH and you can mine full units per day with only a couple cards, but on average it's 25% less profitable to mine than ETH. So even though the ETH difficulty is much higher than UBQ, you will be able to accumulate more UBQ by mining ETH and trading for UBQ, than mining UBQ directly. e.g. a single RX 570 mining ETH makes ~16800 satoshis per day and mining UBQ it's only ~12400 satoshis per day. So with UBQ at ~22442 satoshis, it would take you ~32 hours to get 1 UBQ by mining ETH and trading for UBQ vs 43 hours to get 1 UBQ by mining UBQ directly. http://whattomine.com/coins/151-eth-ethash?utf8=%E2%9C%93&hr=29&p=130&fee=3&cost=0.12&hcost=0.0&commit=Calculatehttp://whattomine.com/coins/173-ubq-ethash?utf8=%E2%9C%93&hr=29&p=130&fee=3&cost=0.12&hcost=0.0&commit=Calculate |
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but you need to be careful because the rail/cable on the PSU CPU connector may not be able to handle a high load. Can you show any psu with separate eps cpu rail and common 12v rail? Didn't heard/see of any with such configuration. By rail I mean the individual connector on the PSU. PSU connector ratings differ between models from the same brand and even different VGA ports on the same PSU. e.g. EVGA specifically says in their G2/P2 manuals the 8-pin with 6-pin pigtail cables should only be used in the last two VGA ports. In addition the cable gauge used for the CPU/SATA/MOLEX ports is usually thinner than the cables used for the PCI-E cables.  |
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Afterburner will only work with up to 3 cards with the Adrenaline drivers. You can set the overclock/undervolt/fan settings directly in the Claymore config or use OverdriveNtool to create profiles as explained on www.mining.help. |
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The current AMD drivers in compute mode are optimized for Windows 10 v1709 FCU. Those are the fastest drivers to use with RX 570/580 cards. The only reason to use the blockchain drivers on Windows v1709 with RX 570/580's is some old miners like SGminer don't work with the latest drivers.
In my experience, in what mining is concerned, the Beta Blockchain drivers are identical to all new drivers. No speed difference whatsoever. If someone has proof otherwise please come forward. I have a six card RX 570/580 rig with dual boot Windows 10 v1709 partitions. The latest Adrenaline drivers on one and the Aug 23rd blockchain drivers on the other, so I can run older miners that are not compatible with the current drivers if I need to. Using the same settings for both, in addition to the blockchain drivers being noticeably slower by 3-4 MH/s, they have frequent drops in hash rate and issues with Windows as well. The AMD blockchain drivers came out before the Windows 10 v1709 FCU and are NOT supported. The v1709 FCU was a major update to how Windows interacts with GPU's and also expanding the previous GPU limit from 8 to 13, which is why AMD had to release new drivers that were compatible with the FCU. |
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The current AMD drivers in compute mode are optimized for Windows 10 v1709 FCU. Those are the fastest drivers to use with RX 570/580 cards. The only reason to use the blockchain drivers on Windows v1709 with RX 570/580's is some old miners like SGminer don't work with the latest drivers.
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There are no ETH ASIC announced. The Bitmain ETH ASIC is just a scantly detailed rumor from a Chinese website that had no details on hash rate and no release date other than potentially "Q2 or Q3 2018".
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You need to find the best settings for your own cards and memory type. My cards are a mix of Asus RX 580/480 with Samsung memory (first three with 2050 MHz memory overclock), Sapphire Nitro+ RX 580's with Samsung memory (2100 MHz memory overclock), Hynix memory (2200 MHz memory oveclock) and a MSI Gaming X RX 580 with Samsung memory (last card with a 2050 MHz memory overclock). -cclock 1200,1150,1200,1200,1200,1200,1200,1200,1200,1200,1200,1200,1200
-mclock 2050,2050,2050,2200,2100,2100,2100,2220,2220,2220,2100,2220,2050
-powlim -10,-5,-10,-15,-10,-15,-10,-10,-5,-10,-10,-10,-10
-cvddc 950,950,950,850,900,850,850,900,900,900,850,900,900
-mvddc 950,950,950,850,900,850,850,900,900,900,850,900,900 |
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Just more rumors without substance or foundation. They also didn't get the memo Scrypt mining with GPU's hasen't been a thing since at least 2015. LOL. ASICs' growing presence in the cryptocurrency sector is a challenge to the mining practice using graphics cards supplied by Nvidia, AMD and related brand vendors, which have been catering mostly to Ether and Litecoin mining. . |
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GPU hangs are most often from to a high overclock, especially on the memory or too much undervolt for that card. Sometimes draining all the power from the capacitors also helps reset the GPU's and risers after a crash. Shutdown down the rig, cutoff the power to the PSU with the switch on the back and press the power button to drain all the power. Then after 1-2 minutes turn the rig back on.
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You can try adding the rpc allow IP's to coin .conf file. To only allow connections from you LAN you can specify your LAN subnet in the rpcconnect parameter. You also need to specify the internal IP address from the machine you are connecting the miner in rpcconnect. Then start the wallet in server mode and use the wallet IP address, rpcuser, rpcpassword and rpcport in the miner config file. Similar to how it's explained here: https://bitcointalk.org/index.php?topic=408268.msg10194594#msg10194594server=1
daemon=1
listen=1
rpcallowip=192.168.1.0/255.255.255.0
rpcconnect=127.0.0.1
rpcport=<RPCPORT>
port=<PORT>
rpcuser=coinrpcuser
rpcpassword=<PASSOWRD> |
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v11.3:
- added automatic detection of best -dcri values in ASM ETH-only mode if -dcri option is missed.
Press "s" key to see current values, you can also press "z" key to restart detection.
- improved support for systems with many GPUs (eight and more) and slow CPU: much less CPU load, EthMan works fine now.
- added assembler kernel for RX550 card. This card is not good for dual mining, but in ETH-only mode ASM kernel is faster by about 7%.
- added "x" key to select GPU for manual -dcri value adjustment.
- several minor bug fixes and improvements.
Confirm on v11.3 EthMan is now working correctly with a Core i3-6100 and 13 RX 580 8GB cards. CPU utilization when down from ~35% to ~8%. I Also got a ~1 MH/s ETH and ~7 MH/s KEC speed bump dual mining from v11.2 with the Adrenaline 18.3.1 drivers. Thank you for the update!  |
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UPDATE: I improved support for systems with a lot of GPUs ( > 8 ) and slow CPU: less CPU load, EthMan works fine now. I will release new version within a few days, also some other improvements will be included.
Glad to here about the fix. I didn't know a Core i3 6100 is a slow CPU. With 13 RX 580's 8GB s on the ASRock H110 Pro BTC+ the load reported in Task Manager is ~35% I guess we need Core i7 to with 12+ GPU's in Windows. |
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Know how to do your own research and not expect someone else to do it for you.
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