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Author Topic: New RX580 only pulling 24Mh/s while old R9 390 managing 20Mh/s-help?  (Read 60 times)
btc3769
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January 04, 2018, 02:54:47 PM
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So I've had an old rig setup for ages which was running a R9 390 on Ubuntu for the past year at about 15Mh/s. I just bought a RX580 and wiped the system, bringing it onto Windows 10 since it's far easier to mine in Windows. Upgrading to the ATI beta drivers meant for mining alone managed to increase my hash rate on the R9 390 to ~20Mh/s, which is awesome! However, my brand new RX580 is only running at 24Mh/s, even when alone. I'm not terribly experienced at mining-I managed to get the old machine setup just fine based on trial and error, but is this out of the realm of reasonability? My machine is old-I think the motherboard is pushing 7-9 years old and the power supply is only 750W, but everything seems stable, I'm just not sure whether this is a reasonable hashrate to get or not? I know many people see they can get up to 30Mh/s with a RX580-is that what I should be expecting as well, or might this be due to a limitation in my setup or the age of my equipment? I'm happy to give whatever other details you anyone might need to isolate this, too-just not sure where to start...
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leonix007
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January 04, 2018, 03:29:22 PM
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So I've had an old rig setup for ages which was running a R9 390 on Ubuntu for the past year at about 15Mh/s. I just bought a RX580 and wiped the system, bringing it onto Windows 10 since it's far easier to mine in Windows. Upgrading to the ATI beta drivers meant for mining alone managed to increase my hash rate on the R9 390 to ~20Mh/s, which is awesome! However, my brand new RX580 is only running at 24Mh/s, even when alone. I'm not terribly experienced at mining-I managed to get the old machine setup just fine based on trial and error, but is this out of the realm of reasonability? My machine is old-I think the motherboard is pushing 7-9 years old and the power supply is only 750W, but everything seems stable, I'm just not sure whether this is a reasonable hashrate to get or not? I know many people see they can get up to 30Mh/s with a RX580-is that what I should be expecting as well, or might this be due to a limitation in my setup or the age of my equipment? I'm happy to give whatever other details you anyone might need to isolate this, too-just not sure where to start...

Getting 30+Mh/s for RX580 requires bios modification, tutorials here

https://bitcointalk.org/index.php?topic=1954245.0

try install drivers for blockchain or drivers with compute mode.
QuintLeo
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January 04, 2018, 10:42:46 PM
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I'm more inclined to wonder why your R9 390 had such LOW hashrate.

 Those should be able to pull well over 25 Mhash/sec on ETH and more likely close to 30.

24 Mhash for a non-BIOS-modded RX 470/480/570/580 card is quite good.


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btc3769
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January 05, 2018, 05:41:39 PM
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I'm going to have to go back over these instructions-my machine rebooted overnight (with the ATI Blockchain drivers I was getting ~20 & 24Mh out of) and now my local Claymore output says 17/20Mh (for the 390/580, respectively) but Miningpoolhub said 14Mh combined and NiceHash now says 48.82 combined. Is there any way to confirm which is correct? Or should I just presume the Claymore direct stats are what is true?
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January 05, 2018, 08:53:43 PM
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Nicehash "reported hashrate" over anything less than the 12 hour average should be ignored - due the nature of their service, you're going to see some CRAZY HUGH short-term swings on reported hashrate.


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