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Title: claymore eth hashrate drop with multiple cards Post by: shadowhlohavec on December 22, 2017, 12:47:55 AM Hello, I have rig with 2x rx 480 1x 470 1x 570, I flashed anoraks moded bios to all cards, first I tried 1 card only in the system, it gave me 29+mhs, overclocked... I plugged in 4 cards and the hashrate for the 2x 480 started at 29 with miner restart it dropped to 25 and now I can get only 25max, I tried flashing it again and changing few settings with overclocking but it's the same, I don't think it's problem with psu because I have 2x 550W. I don' know whats the problem... (when I tried again only 1 card, eth solo hashrate was 31.5mhs which is a bit over i think :D (samsung memory) then again ony 25 with multiple cards....) (the hashrate for monero is 740hs for each card) any help appreciated
Title: Re: claymore eth hashrate drop with multiple cards Post by: xxcsu on December 22, 2017, 05:47:15 AM - You might be flashed the wrong bios for your card(s)
ppl downloading bios files from internet , and they have no clue , those bios files version number is probably different than what they have on they card with the same model number ... I hope you saved your original bios files .. my suggestion will be , flash back the original bios files for each cards !!! you should saved the bios for each cards separetly ... so two saved bios for each 480 , one for the 470 nad for the 570 , and try mining, see how the cards working with original bios.... make sure you rsetting all overclocking , undervolting software u used -or you just have no idea how properly overclock undervolt your cards if you have a modded bios :) -or your 2x550watts psu not enough ... If you have your system on one psu , cpu-mobo-mem-hdd and the 2 rx480 on the same 550w psu , that can be a problem also ... Read this topic about rx 480 power usage (https://bitcointalk.org/index.php?topic=2238455.msg22584160#msg22584160) full system spec would be great , can be helpful to estimate your rig power usage :) Title: Re: claymore eth hashrate drop with multiple cards Post by: shadowhlohavec on December 22, 2017, 01:38:18 PM - no it's the bios from anorak vbios collection so it should be okay
- clocks 1150/2100 and some undervolt might be okay - 550w is enough, system is only 50w , cards 200 each specs Intel Celeron G3930 ASUS PRIME H270-PLUS 60gb ssd 4gb ram Title: Re: claymore eth hashrate drop with multiple cards Post by: Pekine on January 13, 2018, 10:15:11 PM did you downloaded the same BIOS to All cards? What is the memory of the cards?
You can not mix BIOS from differnet Cards and different Memory. |