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Author Topic: 1rst mining rig - HELP! high power level, low Mh/s and 6th card not recognized  (Read 304 times)
jeanvin (OP)
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August 30, 2017, 11:50:23 AM
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Hi everyone,

Please can you help me with my high power consumption level, low Mh/s and 6th card not being recognized ?

I discovered the mining world of cryptocurrency 3 month ago and became a big fan.

I have made some researches on forums and youtube, and decided to build my first rig. I leave in Brazil, is difficult to find some hadwares over here so i bought the equipment that were available:

motherboard: gigabyte z270-designare with 6 PCIE
GPU: 6 Rx 470 sapphire 4gb with elpida memory (model 11256-21-21G, with no v bios switch, the one with dvi port, supposedly developed for mining purpose)
RAM: 8gb ddr4 ram
PROCESSOR: Intel Celeron G3930 Kaby Lake, Cache 2MB, 2.9GHz
PSU: 2x 750w evga gold plugged together
SSD 120 gb

After that I installed some softwares and drivers, see the list below:
- Windows 10 64bit
- amd driver 16.9.2 and 17.5.1 for rx series (which I merger together and installed in the cards using this procedure: https://www.youtube.com/watch?v=fTusQ0omj8M)
- Simplemining OS on a bootable usb device
- ATIflash
- polaris bios editor (normal version i think)

I modified the GPU's bios, copying 1500 to 1625, 1750 and 2000 and kept TDP(W) on 85 and flashed then correctly to the cards.

On simplemining, I setup the following:
Core MHz:1050
Memory MHz: 2000
Powerstage: 2
Target Temperature ℃: 55
Minimum Fan speed %:60

I am using claymore-eth-v9.8 with the following command line (were i tried to change bolting settings but did saw any diference on power consumption:
-wd 1 -r 1 -epool stratum+tcp://eth-eu.dwarfpool.com:8008 -ewal $walletETH/$rigName -esm 0 -epsw x -allpools 1 -mport -3333 -asm 1 -powlim 25,25,25,25,25 -mvddc 850 -cvddc 820

I have 2 issues:
1) my rig don't work with 6 gpus. It only boot with up to 5 gpus (all cards and risers work perfectly, they just don't work all 6 together). when i connect the 6th card, to rig don't reach the motherboard screen, it keeps rebooting all the time.
2) power consumption for the 5 rx470 4gb is 790watt, and hash rate about 24,7Mh/s

Questions:
How can I have my 6 cards running instead of 5 using simplemining?
How can I increase mu rx470 4gb hash rate using simplemining?
How can I reduce my rig power combustion using simple mining?

Thank you very much for your help and sorry if i am asking stupid questions!

Best

JPV










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