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    Author Topic: Claymore's Dual Ethereum AMD+NVIDIA GPU Miner v15.0 (Windows/Linux)  (Read 6591489 times)

    • Bael
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    October 12, 2017, 05:03:50 AM
     #16801
    Hi

    I have a problem with the Claymore boot, for some reason it only detects 3 gigabytes of the 4 that my gpu has

    I made a clean installation of win10, using the latest version of Claymore with a rx 580 4GB and everything worked fine, but after some reboot the miner started to fail the boot and close the software.

    Checking the logs only recognizes 3 GB of the 4 that should recognize.

    Do you know what the problem could be?

    Please excuse my bad english, I use a translator and I'm sure it will not be very suitable.

    regards

  • P00P135
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    October 12, 2017, 05:45:30 AM
     #16802
    Quote from: Bael on October 12, 2017, 05:03:50 AM
    Hi

    I have a problem with the Claymore boot, for some reason it only detects 3 gigabytes of the 4 that my gpu has

    I made a clean installation of win10, using the latest version of Claymore with a rx 580 4GB and everything worked fine, but after some reboot the miner started to fail the boot and close the software.

    Checking the logs only recognizes 3 GB of the 4 that should recognize.

    Do you know what the problem could be?

    Please excuse my bad english, I use a translator and I'm sure it will not be very suitable.

    regards

    setx GPU_FORCE_64BIT_PTR 0
    setx GPU_MAX_HEAP_SIZE 100
    setx GPU_USE_SYNC_OBJECTS 1
    setx GPU_MAX_ALLOC_PERCENT 100
    setx GPU_SINGLE_ALLOC_PERCENT 100

    Make sure your bat file has this.

  • informatuss
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    October 12, 2017, 07:58:30 AM
     #16803
    I've got problem with windows freezing when I'm closing claymore after GPU hangs in OpenCL.
    I need to do hard reset most of the time.
    Same problem with 3 rigs, all windows 10, all RX580.

    I had -r 1 for reboot and now I'm using -r -1 -wd 0
    still same problem.

  • Ursul0
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    October 12, 2017, 08:49:56 AM
    Last edit: October 12, 2017, 09:04:49 AM by Ursul0
     #16804
    Quote from: Bael on October 12, 2017, 05:03:50 AM
    I have a problem with the Claymore boot, for some reason it only detects 3 gigabytes of the 4 that my gpu has

    I made a clean installation of win10, using the latest version of Claymore with a rx 580 4GB and everything worked fine, but after some reboot the miner started to fail the boot and close the software.


    is your win10 a 64 bit install? how much RAM you've got?

    in general:
    Do proper DDU with reboots (until you see all adapters as MS in device manager), remove all hidden monitors, install drivers & patch, set mem to stock and core to 1080MHz with volts at ~ 0.900ish = all should work. if it doesn't check your physical connections (raisers, raisers power, etc)

  • Ursul0
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    October 12, 2017, 08:55:49 AM
     #16805
    Quote from: P00P135 on October 12, 2017, 05:45:30 AM
    Quote from: Bael on October 12, 2017, 05:03:50 AM
    Hi

    I have a problem with the Claymore boot, for some reason it only detects 3 gigabytes of the 4 that my gpu has

    I made a clean installation of win10, using the latest version of Claymore with a rx 580 4GB and everything worked fine, but after some reboot the miner started to fail the boot and close the software.

    Checking the logs only recognizes 3 GB of the 4 that should recognize.

    Do you know what the problem could be?

    Please excuse my bad english, I use a translator and I'm sure it will not be very suitable.

    regards

    setx GPU_FORCE_64BIT_PTR 0
    setx GPU_MAX_HEAP_SIZE 100
    setx GPU_USE_SYNC_OBJECTS 1
    setx GPU_MAX_ALLOC_PERCENT 100
    setx GPU_SINGLE_ALLOC_PERCENT 100

    Make sure your bat file has this.

    LOL. your gut feeling that these variables have something to do with memory is correct, but detection is not allocation, hence nothing to do with this case here

    ... also allowing some pointer to be in 32bits may cause the opposite effect.. in theory

  • coinsaburou
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    October 12, 2017, 09:40:49 AM
     #16806
    I tried the new version , speed not change.

  • micax1
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    October 12, 2017, 10:23:01 AM
     #16807
    Whoever is still using r9 280x... I need your advice badly!
    I have weird 13-26 mh/s ETH 29-58 mh/s LBC fluctuation.
    Does not depend on overcloack, power limit, page file > 32gb different PSUs voltage, temperature or whatever, tried all the shit possible!

    It`s like >2 times difference! And usually it is  ~13...

    Please give me some advice on that behavior(GPU2 & GPU3):

    Code:
    ETH: 10/12/17-07:25:41 - New job from daggerhashimoto.eu.nicehash.com:3353
    ETH - Total Speed: 176.130 Mh/s, Total Shares: 7, Rejected: 1, Time: 00:02
    ETH: GPU0 29.026 Mh/s, GPU1 29.718 Mh/s, GPU2 13.242 Mh/s, GPU3 13.198 Mh/s, GPU4 30.733 Mh/s, GPU5 30.656 Mh/s, GPU6 29.557 Mh/s
     LBC - Total Speed: 489.846 Mh/s, Total Shares: 44, Rejected: 0
     LBC: GPU0 83.449 Mh/s, GPU1 85.440 Mh/s, GPU2 29.793 Mh/s, GPU3 29.694 Mh/s, GPU4 88.358 Mh/s, GPU5 88.136 Mh/s, GPU6 84.976 Mh/s
    ETH: 10/12/17-07:25:42 - SHARE FOUND - (GPU 5)
    ETH: Share accepted (93 ms)!
     LBC: 10/12/17-07:25:44 - SHARE FOUND - (GPU 4)
     LBC: Share accepted (94 ms)!
     LBC: 10/12/17-07:25:46 - SHARE FOUND - (GPU 0)
     LBC: Share accepted (203 ms)!
     LBC: 10/12/17-07:25:47 - New job from lbry.eu.nicehash.com:3356
     LBC: 10/12/17-07:25:51 - SHARE FOUND - (GPU 0)
     LBC: Share accepted (109 ms)!
    ETH: 10/12/17-07:25:54 - SHARE FOUND - (GPU 6)
    ETH: Share accepted (94 ms)!
     LBC: 10/12/17-07:25:59 - SHARE FOUND - (GPU 1)
     LBC: Share accepted (93 ms)!
     LBC: 10/12/17-07:26:07 - SHARE FOUND - (GPU 5)
     LBC: Share accepted (124 ms)!
    GPU0 t=91C fan=82%, GPU1 t=84C fan=82%, GPU2 t=68C fan=35%, GPU3 t=78C fan=45%, GPU4 t=84C fan=82%, GPU5 t=79C fan=83%, GPU6 t=87C fan=81%
     LBC: 10/12/17-07:26:12 - SHARE FOUND - (GPU 4)
     LBC: Share accepted (140 ms)!
    ETH: 10/12/17-07:26:14 - New job from daggerhashimoto.eu.nicehash.com:3353
    ETH - Total Speed: 177.001 Mh/s, Total Shares: 9, Rejected: 1, Time: 00:03
    ETH: GPU0 29.016 Mh/s, GPU1 30.652 Mh/s, GPU2 13.239 Mh/s, GPU3 13.203 Mh/s, GPU4 30.729 Mh/s, GPU5 30.609 Mh/s, GPU6 29.553 Mh/s
     LBC - Total Speed: 492.348 Mh/s, Total Shares: 50, Rejected: 0
     LBC: GPU0 83.420 Mh/s, GPU1 88.124 Mh/s, GPU2 29.786 Mh/s, GPU3 29.707 Mh/s, GPU4 88.346 Mh/s, GPU5 88.001 Mh/s, GPU6 84.964 Mh/s
    ETH: 10/12/17-07:26:25 - New job from daggerhashimoto.eu.nicehash.com:3353
    ETH - Total Speed: 176.912 Mh/s, Total Shares: 9, Rejected: 1, Time: 00:03
    ETH: GPU0 29.006 Mh/s, GPU1 30.617 Mh/s, GPU2 13.243 Mh/s, GPU3 13.202 Mh/s, GPU4 30.690 Mh/s, GPU5 30.641 Mh/s, GPU6 29.515 Mh/s
     LBC - Total Speed: 492.093 Mh/s, Total Shares: 50, Rejected: 0
     LBC: GPU0 83.392 Mh/s, GPU1 88.023 Mh/s, GPU2 29.795 Mh/s, GPU3 29.704 Mh/s, GPU4 88.233 Mh/s, GPU5 88.092 Mh/s, GPU6 84.854 Mh/s
    Setting DAG epoch #20...
    Setting DAG epoch #20 for GPU1
    Setting DAG epoch #20 for GPU6
    Setting DAG epoch #20 for GPU0
    Setting DAG epoch #20 for GPU5
    Setting DAG epoch #20 for GPU4
    Setting DAG epoch #20 for GPU2
    Setting DAG epoch #20 for GPU3
    GPU4 DAG creation time - 3780 ms
    Setting DAG epoch #20 for GPU4 done
    GPU1 DAG creation time - 3815 ms
    Setting DAG epoch #20 for GPU1 done
    GPU5 DAG creation time - 3814 ms
    Setting DAG epoch #20 for GPU5 done
    GPU6 DAG creation time - 3832 ms
    Setting DAG epoch #20 for GPU6 done
    GPU0 DAG creation time - 3870 ms
    Setting DAG epoch #20 for GPU0 done
    ETH: 10/12/17-07:26:30 - New job from daggerhashimoto.eu.nicehash.com:3353
    ETH - Total Speed: 172.065 Mh/s, Total Shares: 9, Rejected: 1, Time: 00:03
    ETH: GPU0 27.462 Mh/s, GPU1 29.873 Mh/s, GPU2 13.242 Mh/s, GPU3 13.192 Mh/s, GPU4 29.840 Mh/s, GPU5 29.724 Mh/s, GPU6 28.732 Mh/s
     LBC - Total Speed: 478.161 Mh/s, Total Shares: 50, Rejected: 0
     LBC: GPU0 78.954 Mh/s, GPU1 85.884 Mh/s, GPU2 29.794 Mh/s, GPU3 29.681 Mh/s, GPU4 85.790 Mh/s, GPU5 85.455 Mh/s, GPU6 82.603 Mh/s
    GPU2 DAG creation time - 4985 ms
    Setting DAG epoch #20 for GPU2 done
    GPU3 DAG creation time - 5050 ms
    Setting DAG epoch #20 for GPU3 done
     LBC: 10/12/17-07:26:34 - SHARE FOUND - (GPU 4)
     LBC: Share accepted (94 ms)!
    ETH: 10/12/17-07:26:37 - SHARE FOUND - (GPU 2)
    ETH: Share accepted (94 ms)!
    GPU0 t=92C fan=82%, GPU1 t=84C fan=82%, GPU2 t=72C fan=39%, GPU3 t=84C fan=52%, GPU4 t=85C fan=82%, GPU5 t=79C fan=83%, GPU6 t=87C fan=81%
     LBC: 10/12/17-07:26:42 - New job from lbry.eu.nicehash.com:3356
     LBC: 10/12/17-07:26:45 - New job from lbry.eu.nicehash.com:3356
    ETH: 10/12/17-07:26:46 - SHARE FOUND - (GPU 6)
    ETH: Share accepted (94 ms)!
    ETH: 10/12/17-07:26:49 - SHARE FOUND - (GPU 6)
    ETH: Share accepted (94 ms)!

    GPU #0: Hawaii, 4096 MB available, 40 compute units
    GPU #1: Hawaii, 4096 MB available, 40 compute units
    GPU #2: Tahiti, 3072 MB available, 32 compute units
    GPU #3: Tahiti, 3072 MB available, 32 compute units
    GPU #4: Hawaii, 4096 MB available, 44 compute units
    GPU #5: Hawaii, 4096 MB available, 40 compute units
    GPU #6: Hawaii, 4096 MB available, 40 compute units
    ETH - Total Speed: 203.846 Mh/s, Total Shares: 12(0+0+3+0+0+3+6), Rejected: 1, Time: 00:03
    ETH: GPU0 29.130 Mh/s, GPU1 30.926 Mh/s, GPU2 25.995 Mh/s, GPU3 25.968 Mh/s, GPU4 31.099 Mh/s, GPU5 30.890 Mh/s, GPU6 29.838 Mh/s
     LBC - Total Speed: 553.577 Mh/s, Total Shares: 51(8+10+2+0+15+8+8), Rejected: 0
     LBC: GPU0 83.748 Mh/s, GPU1 88.912 Mh/s, GPU2 58.488 Mh/s, GPU3 58.427 Mh/s, GPU4 89.410 Mh/s, GPU5 88.808 Mh/s, GPU6 85.784 Mh/s
    Incorrect ETH shares: none
    1 minute average ETH total speed: 189.878 Mh/s
    Pool switches: ETH - 0, LBC - 0
    Current ETH share target: 0x00000001fffe0000 (diff: 2147MH), epoch 20(1.16GB)
    Current LBC share target: 0x00000000ffff0000 (diff: 4295MH)
    GPU0 t=93C fan=82%, GPU1 t=84C fan=82%, GPU2 t=73C fan=40%, GPU3 t=86C fan=61%, GPU4 t=85C fan=82%, GPU5 t=80C fan=83%, GPU6 t=87C fan=82%












     LBC: 10/12/17-07:29:28 - New job from lbry.eu.nicehash.com:3356
     LBC: 10/12/17-07:29:40 - SHARE FOUND - (GPU 6)
     LBC: Share accepted (93 ms)!
    ETH: 10/12/17-07:29:46 - New job from daggerhashimoto.eu.nicehash.com:3353
    ETH - Total Speed: 199.601 Mh/s, Total Shares: 27, Rejected: 3, Time: 00:06
    ETH: GPU0 26.587 Mh/s, GPU1 30.982 Mh/s, GPU2 25.978 Mh/s, GPU3 24.416 Mh/s, GPU4 30.970 Mh/s, GPU5 30.912 Mh/s, GPU6 29.756 Mh/s
     LBC - Total Speed: 542.354 Mh/s, Total Shares: 71, Rejected: 0
     LBC: GPU0 76.436 Mh/s, GPU1 89.074 Mh/s, GPU2 58.451 Mh/s, GPU3 54.936 Mh/s, GPU4 89.038 Mh/s, GPU5 88.871 Mh/s, GPU6 85.548 Mh/s
    Setting DAG epoch #145...
    Setting DAG epoch #145 for GPU2
    Setting DAG epoch #145 for GPU6
    Setting DAG epoch #145 for GPU3
    Setting DAG epoch #145 for GPU1
    Setting DAG epoch #145 for GPU5
    Setting DAG epoch #145 for GPU4
    Setting DAG epoch #145 for GPU0
    GPU0 t=90C fan=83%, GPU1 t=86C fan=83%, GPU2 t=84C fan=57%, GPU3 t=87C fan=67%, GPU4 t=87C fan=83%, GPU5 t=80C fan=84%, GPU6 t=87C fan=82%
    GPU4 DAG creation time - 7043 ms
    Setting DAG epoch #145 for GPU4 done
    GPU1 DAG creation time - 7104 ms
    Setting DAG epoch #145 for GPU1 done
    GPU5 DAG creation time - 7104 ms
    Setting DAG epoch #145 for GPU5 done
    GPU0 DAG creation time - 7146 ms
    Setting DAG epoch #145 for GPU0 done
    GPU6 DAG creation time - 7139 ms
    Setting DAG epoch #145 for GPU6 done
    ETH: 10/12/17-07:29:56 - New job from daggerhashimoto.eu.nicehash.com:3353
    ETH - Total Speed: 150.259 Mh/s, Total Shares: 27, Rejected: 3, Time: 00:07
    ETH: GPU0 28.973 Mh/s, GPU1 30.583 Mh/s, GPU2 0.000 Mh/s, GPU3 0.000 Mh/s, GPU4 30.693 Mh/s, GPU5 30.542 Mh/s, GPU6 29.468 Mh/s
     LBC - Total Speed: 431.992 Mh/s, Total Shares: 71, Rejected: 0
     LBC: GPU0 83.296 Mh/s, GPU1 87.927 Mh/s, GPU2 0.000 Mh/s, GPU3 0.000 Mh/s, GPU4 88.241 Mh/s, GPU5 87.808 Mh/s, GPU6 84.720 Mh/s
    GPU2 DAG creation time - 9173 ms
    Setting DAG epoch #145 for GPU2 done
    GPU3 DAG creation time - 9274 ms
    Setting DAG epoch #145 for GPU3 done
    ETH: 10/12/17-07:30:05 - New job from daggerhashimoto.eu.nicehash.com:3353
    ETH - Total Speed: 175.382 Mh/s, Total Shares: 27, Rejected: 3, Time: 00:07
    ETH: GPU0 28.990 Mh/s, GPU1 30.457 Mh/s, GPU2 13.243 Mh/s, GPU3 11.957 Mh/s, GPU4 30.671 Mh/s, GPU5 30.545 Mh/s, GPU6 29.518 Mh/s
     LBC - Total Speed: 488.468 Mh/s, Total Shares: 71, Rejected: 0
     LBC: GPU0 83.346 Mh/s, GPU1 87.563 Mh/s, GPU2 29.797 Mh/s, GPU3 26.904 Mh/s, GPU4 88.179 Mh/s, GPU5 87.815 Mh/s, GPU6 84.864 Mh/s
    ETH: 10/12/17-07:30:08 - SHARE FOUND - (GPU 0)
    ETH: Share accepted (78 ms)!
     LBC: 10/12/17-07:30:09 - SHARE FOUND - (GPU 4)
     LBC: Share accepted (109 ms)!
     LBC: 10/12/17-07:30:12 - SHARE FOUND - (GPU 1)
     LBC: Share accepted (94 ms)!
    ETH: 10/12/17-07:30:15 - New job from daggerhashimoto.eu.nicehash.com:3353
    ETH - Total Speed: 172.323 Mh/s, Total Shares: 28, Rejected: 3, Time: 00:07
    ETH: GPU0 26.254 Mh/s, GPU1 30.336 Mh/s, GPU2 13.199 Mh/s, GPU3 11.953 Mh/s, GPU4 30.621 Mh/s, GPU5 30.456 Mh/s, GPU6 29.505 Mh/s
     LBC - Total Speed: 479.706 Mh/s, Total Shares: 73, Rejected: 0
     LBC: GPU0 75.480 Mh/s, GPU1 87.214 Mh/s, GPU2 29.696 Mh/s, GPU3 26.895 Mh/s, GPU4 88.035 Mh/s, GPU5 87.560 Mh/s, GPU6 84.826 Mh/s
     LBC: 10/12/17-07:30:21 - SHARE FOUND - (GPU 5)
     LBC: Share accepted (94 ms)!


    Thanks!

  • asdpof
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    October 12, 2017, 01:01:56 PM
     #16808
    Quote from: coinsaburou on October 12, 2017, 09:40:49 AM
    I tried the new version , speed not change.

    By the release description i would guess the speed increase in the new versin is only for vega

  • ciprianpt
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    October 12, 2017, 01:13:02 PM
     #16809
    Quote from: informatuss on October 12, 2017, 07:58:30 AM
    I've got problem with windows freezing when I'm closing claymore after GPU hangs in OpenCL.
    I need to do hard reset most of the time.
    Same problem with 3 rigs, all windows 10, all RX580.

    I had -r 1 for reboot and now I'm using -r -1 -wd 0
    still same problem.


    Have you also created the reboot.bat file ?
    https://1stMiningRig.com - Just Another Mining Blog Smiley

  • ingyenfrag
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    October 12, 2017, 02:30:50 PM
     #16810
    Quote from: asdpof on October 12, 2017, 01:01:56 PM
    Quote from: coinsaburou on October 12, 2017, 09:40:49 AM
    I tried the new version , speed not change.

    By the release description i would guess the speed increase in the new versin is only for vega

    What new version? I see the september 02 version as the latest.

  • alizali
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    October 12, 2017, 02:46:07 PM
     #16811
    hi guys
    till yesterday my GPU temp and fan speeds are shown in claymore as usual
    from today even after restart claymore and restart windows and even add -tt 1 to may bat start file these information is not printed anymore
    why?
    can anybody help?

  • Vann
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    October 12, 2017, 02:48:50 PM
     #16812
    You need to use a monitor or dummy plug in the primary VGA for the AMD driver to be able to read and set the fan speed and temperature.

  • alizali
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    October 12, 2017, 02:59:00 PM
     #16813
    1. i have to explain that my GPU does not have any output. now i use to remote desktop to connect my rig
    2. my GPU-z and sapphire trixx shows the temp and fan speeds
    3. as i told i had them in claymore but suddenly disappeared

  • blackhwk77
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    October 12, 2017, 04:01:54 PM
     #16814
    I'm seeing a similar problem on my 5 GPU rig,  I get the below messages in the claymore log and a bunch of driver crashes in the windows log.  I have dialed my GPUs way back but it still crashes and there are 0 GPU errors when I look at hwinfo.


    Quote from: informatuss on October 12, 2017, 07:58:30 AM
    I've got problem with windows freezing when I'm closing claymore after GPU hangs in OpenCL.
    I need to do hard reset most of the time.
    Same problem with 3 rigs, all windows 10, all RX580.

    I had -r 1 for reboot and now I'm using -r -1 -wd 0
    still same problem.

  • greatauror28
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    October 12, 2017, 05:23:19 PM
     #16815
    Guys, i'm building a new rig - reason is my 8-gpu Gaming X rig got sold and I got some sweet profit  Grin

    I'm thinking to try Sapphire cards, but would like to have 8gb ones, if I could get a decent price. Here are my options:

    8gb Nitro+ 570       - $350CAD
    8gb Nitro+ 580 Ltd - $438CAD
    8gb Nitro+ 580 SEL - $380CAD
    4gb Nitro+ 580 Ltd  - $363CAD

    I know most would pick the SEL for $380 but it's out of stock right now. I could wait for a week or so but there's no guarantee that I could snag 8 of them.

    If I ended up selling it again, then I won't mind getting the 4gb 580, but if I'm keeping them, I would like an 8GB ones for future-proofing.

    What do you guys think? I'm wishing to get my rig built and up and running before Byz arrives on the 25th.
    I build and sell rigs! I also sell ssd clones of the most stable Windows+Claymore+AMD driver combo you'd ever used.

  • fredeq
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    October 12, 2017, 06:37:48 PM
     #16816
    Quote from: micax1 on October 12, 2017, 10:23:01 AM
    Whoever is still using r9 280x... I need your advice badly!
    I have weird 13-26 mh/s ETH 29-58 mh/s LBC fluctuation.
    Does not depend on overcloack, power limit, page file > 32gb different PSUs voltage, temperature or whatever, tried all the shit possible!


    Nicehash users buying your hashes will sometimes mine a coin with smaller dag (like UBQ) and on that coin 280x will give you its full speed.
    https://whattomine.com - Check what to mine Smiley

  • sadyas
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    October 12, 2017, 06:41:22 PM
     #16817
    Quote from: fredeq on October 12, 2017, 06:37:48 PM
    Quote from: micax1 on October 12, 2017, 10:23:01 AM
    Whoever is still using r9 280x... I need your advice badly!
    I have weird 13-26 mh/s ETH 29-58 mh/s LBC fluctuation.
    Does not depend on overcloack, power limit, page file > 32gb different PSUs voltage, temperature or whatever, tried all the shit possible!


    Nicehash users buying your hashes will sometimes mine a coin with smaller dag (like UBQ) and on that coin 280x will give you its full speed.

    So if you mine the UBQ directly, it is good for 280X.

  • PeaMine
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    October 12, 2017, 08:29:58 PM
     #16818
    In regards to allcoins, allpools, and the dag settings, what would be optimal for ETH and LBC on Nicehash?
    I know ESM 3 is used, but it seems there is quite a delay when switching between dev fee and NH, pool side hash rate is usually 20% lower from it(or something).
    Datacenter Technician and Electrician.  If you have any questions feel free to ask me as I am generally bored looking at logs and happy to help during free time.

  • drak24
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    October 12, 2017, 08:44:48 PM
     #16819
    Ok so I fixed my issue with the low hashrate. Problem I'm having now is after a few minutes claymore will crash the computer, in the sense that the screen goes black and the fans on the video cards go to max and I have to reboot the pc physically. I do notice before it crashes, the hashrate starts dropping, little by little until it puts the pc back into that crashed state. Any suggestions on how to fix this?

  • Victorio
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    October 12, 2017, 09:07:01 PM
     #16820
    Quote from: micax1 on October 12, 2017, 10:23:01 AM
    Whoever is still using r9 280x... I need your advice badly!
    I have weird 13-26 mh/s ETH 29-58 mh/s LBC fluctuation.
    Does not depend on overcloack, power limit, page file > 32gb different PSUs voltage, temperature or whatever, tried all the shit possible!

    It`s like >2 times difference! And usually it is  ~13...
    In your case, Nicehash switches among different Ethash coins - Ethereum (DAG ~145 epoch), Ethereum Classic (~148 epoch), Ubiq (~8), Expanse (~23) and Musicoin (don't remember, about 15-30). AMD Tahiti GPUs are very sensible to DAG epoch, i.e. the DAG size in GB and with each epoch, the hashrate of Tahiti chips drops about 0.15 MH/s (estimate taken from forums).
    AMD Polaris, RX4xx and RX5xx, did also exhibit hashrate drop connected to increasing DAG file, but the AMD Blockchain Workload beta driver fixed that issue. AMD will never release a similar software patch for AMD 7xxx, 2xx - these products are phased out.
    I advise you to run a dedicated Claymore miner instance on these 280x, mining Ubiq, Expanse or Musicoin at a decent rate of 24-27 MH/s, rather than switching infinite times per day between ETC/ETH at 13 MH/s and UBQ/EXP/MUSIC at 27 MH/s.
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