Forum Home
    • Register
    • Login
    • Search
    • Recent
    • Tags
    • Popular

    Burned out molex -\> PCIe cable

    Mining
    5
    15
    2858
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • S
      svennand Regular Member last edited by

      [quote name=“Myerss” post=“30811” timestamp=“1381355165”]
      Dammit, my Molex cable melted that was connected to PCIe adapters… machine offline… How do you guys manage to run five cards in a rig? Do you use Dual PSUs or some 14-1600watt ? In case of duals how do you make them work together in one rig?
      [/quote]

      I just keep it at 4x card pr rig=)
      And i have experienced the same with 4x 7970. dont quite know why it has happen though. guess theres to much powerdraw on a single lead or something.

      I just lick my wounds and replace that cable ;)

      1 Reply Last reply Reply Quote 0
      • N
        Nutnut Regular Member last edited by

        [quote name=“Myerss” post=“30811” timestamp=“1381355165”]
        Dammit, my Molex cable melted that was connected to PCIe adapters… machine offline… How do you guys manage to run five cards in a rig? Do you use Dual PSUs or some 14-1600watt ? In case of duals how do you make them work together in one rig?
        [/quote]

        With those adapter you MUST make sure that you connect each connector to a completely separate cable from the PSU. 300Watt on a single molex will defo melt it.

        1 Reply Last reply Reply Quote 0
        • M
          Myerss last edited by

          ;D It sure did :) well well … btw how do you get past 730Kh/s on xubuntu with them Gigabytes 7970

          With these settings i get 730 and can´t get engine above 1040 or the hashrate drops.
          Ran the same cards on windows 7 before and they where upp to 770Kh/s stable with eng/mem 1100/1500

          TC is scrypt130511Tahitiglg2tc10240w256l8.bin

          Ignore the first card, runs to hot so i found a sweet spot @ 963/1220 = 680Kh/s and 863/1220 = 610Kh/s

          [code]“intensity” : “13,13,13,13”,
          “vectors” : “1,1,1,1”,
          “worksize” : “256,256,256,256”,
          “kernel” : “scrypt,scrypt,scrypt,scrypt”,
          “lookup-gap” : “2,2,2,2”,
          “thread-concurrency” : “0,0,0,0”,
          “shaders” : “2048,2048,2048,2048”,
          “gpu-engine” : “863,1040,1040,1040”,
          “gpu-fan” : “85-95,85-95,85-95,85-95”,
          “gpu-memclock” : “1220,1500,1500,1500”,
          “gpu-memdiff” : “0,0,0,0”,
          “gpu-powertune” : “0,0,0,0”,
          “gpu-vddc” : “0.000,0.000,0.000,0.000”,
          “temp-cutoff” : “95”,
          “temp-overheat” : “85,85,85,85”,
          “temp-target” : “75,75,75,75”,
          “auto-fan” : true,
          “api-mcast-port” : “4028”,
          “api-port” : “4028”,
          “expiry” : “120”,
          “gpu-dyninterval” : “7”,
          “gpu-platform” : “0”,
          “gpu-threads” : “2”,
          “failover-only” : true,
          “hotplug” : “5”,
          “log” : “5”,
          “no-pool-disable” : true,
          “queue” : “0”,
          “scan-time” : “30”,
          “scrypt” : true,
          “temp-hysteresis” : “3”,
          “shares” : “0”,
          “kernel-path” : “/usr/local/bin”
          [/code]

          1 Reply Last reply Reply Quote 0
          • N
            Nutnut Regular Member last edited by

            [quote name=“Myerss” post=“30818” timestamp=“1381360100”]
            ;D It sure did :) well well … btw how do you get past 730Kh/s on xubuntu with them Gigabytes 7970

            With these settings i get 730 and can´t get engine above 1040 or the hashrate drops.
            Ran the same cards on windows 7 before and they where upp to 770Kh/s stable with eng/mem 1100/1500

            TC is scrypt130511Tahitiglg2tc10240w256l8.bin

            Ignore the first card, runs to hot so i found a sweet spot @ 963/1220 = 680Kh/s and 863/1220 = 610Kh/s

            [code]“intensity” : “13,13,13,13”,
            “vectors” : “1,1,1,1”,
            “worksize” : “256,256,256,256”,
            “kernel” : “scrypt,scrypt,scrypt,scrypt”,
            “lookup-gap” : “2,2,2,2”,
            “thread-concurrency” : “0,0,0,0”,
            “shaders” : “2048,2048,2048,2048”,
            “gpu-engine” : “863,1040,1040,1040”,
            “gpu-fan” : “85-95,85-95,85-95,85-95”,
            “gpu-memclock” : “1220,1500,1500,1500”,
            “gpu-memdiff” : “0,0,0,0”,
            “gpu-powertune” : “0,0,0,0”,
            “gpu-vddc” : “0.000,0.000,0.000,0.000”,
            “temp-cutoff” : “95”,
            “temp-overheat” : “85,85,85,85”,
            “temp-target” : “75,75,75,75”,
            “auto-fan” : true,
            “api-mcast-port” : “4028”,
            “api-port” : “4028”,
            “expiry” : “120”,
            “gpu-dyninterval” : “7”,
            “gpu-platform” : “0”,
            “gpu-threads” : “2”,
            “failover-only” : true,
            “hotplug” : “5”,
            “log” : “5”,
            “no-pool-disable” : true,
            “queue” : “0”,
            “scan-time” : “30”,
            “scrypt” : true,
            “temp-hysteresis” : “3”,
            “shares” : “0”,
            “kernel-path” : “/usr/local/bin”
            [/code]
            [/quote]

            tc 8192. sometimes more is less! ;)

            1 Reply Last reply Reply Quote 0
            • M
              Myerss last edited by

              Thank you, but no joy, 8192 gives me 720@1040/1500 and everything above makes it drop. Xubuntu 13.4, AMD 13.4, cgminer 3.5.0

              1 Reply Last reply Reply Quote 0
              • S
                svennand Regular Member last edited by

                The ratio of gpu/memory speed seems a bit of.

                1500mhz is perfect for 1080 processor core speed. maybe try to go down on the memspeed?

                1 Reply Last reply Reply Quote 0
                • N
                  Nutnut Regular Member last edited by

                  yeah - i run 1080/1500. If it’s a particularly cool day an i’m feeling a bit rebelious i’ll push 1100/1500 which pushes me to ~765.

                  Stability not an issue at 1080/1500 either - i grabbed the below screen shot just now… Miner started on the 29th September (i do zero the counter after a block find though)…

                  here’s my startup…

                  [code]screen -dmS cgminer ./cgminer --scrypt -o stratum+tcp://ftcpps.nut2pools.com:5565 -u nutnut.2 -p x --gpu-vddc 1.175 --shaders 2048 --thread-concurrency 8192 --intensity 13 -g 2 --worksize 256 --lookup-gap 2 --gpu-engine 1080 --gpu-memclock 1500
                  [/code]

                  It’s also worth noting that if i run with the screen connected, it drops the hash significantly…

                  [attachment deleted by admin]

                  1 Reply Last reply Reply Quote 0
                  • M
                    Myerss last edited by

                    This is what i get with those settings :'(

                    [attachment deleted by admin]

                    1 Reply Last reply Reply Quote 0
                    • M
                      Myerss last edited by

                      Do you guys use amds 13.4 or 13.1 drivers? Gonna try downgrading cgminer from 3.5.0 it would be a shame to waste such potential extra hashing power :)

                      1 Reply Last reply Reply Quote 0
                      • R
                        RIPPEDDRAGON Regular Member last edited by

                        [quote name=“Myerss” post=“30879” timestamp=“1381444478”]
                        This is what i get with those settings :'(
                        [/quote]

                        That’s about what I got when running those settings a while back. My MSI 7970s just don’t like standard mining settings, they are at something like 21150 TC and running happily at just over 740KH/s and I can’t get them higher.

                        1 Reply Last reply Reply Quote 0
                        • N
                          Nutnut Regular Member last edited by

                          [quote name=“Myerss” post=“30944” timestamp=“1381500902”]
                          Do you guys use amds 13.4 or 13.1 drivers? Gonna try downgrading cgminer from 3.5.0 it would be a shame to waste such potential extra hashing power :)
                          [/quote]

                          Well, if i told everyone i was running i was running 12.11 (coz the 13.x seem to be crap) then i wouldn’t have the advantage would I? Oh wait… Dammit! ;)

                          1 Reply Last reply Reply Quote 0
                          • S
                            svennand Regular Member last edited by

                            [quote name=“Nutnut” post=“31007” timestamp=“1381565673”]
                            [quote author=Myerss link=topic=3968.msg30944#msg30944 date=1381500902]
                            Do you guys use amds 13.4 or 13.1 drivers? Gonna try downgrading cgminer from 3.5.0 it would be a shame to waste such potential extra hashing power :)
                            [/quote]

                            Well, if i told everyone i was running i was running 12.11 (coz the 13.x seem to be crap) then i wouldn’t have the advantage would I? Oh wait… Dammit! ;)
                            [/quote]

                            +1, 13.11 and especially 13.4 is crap drivers. random crash and will not work FTW! I use 13.8 beta drivers now on my windows rig. works like a charm.
                            Never crashed, and i can start stop cgminer like i choose without needing the reboot at times due to bad cgminer shutdown…

                            1 Reply Last reply Reply Quote 0
                            • M
                              Myerss last edited by

                              Dear (whatever lord you believe in) I shall henceforth never install a 13.4 driver upon a rig again
                              this I swear to thy.

                              Newest beta worked like a charm! :)
                              And after the cryptobadger article I managed to get em down to
                              1.110 volt stable as long as you run them below engine 1090 8)

                              1 Reply Last reply Reply Quote 0
                              • ghostlander
                                ghostlander Regular Member last edited by

                                [quote name=“Myerss” post=“30944” timestamp=“1381500902”]
                                Do you guys use amds 13.4 or 13.1 drivers? Gonna try downgrading cgminer from 3.5.0 it would be a shame to waste such potential extra hashing power :)
                                [/quote]

                                13.1 is a must have for HD5870 and HD5970 cards. Excellent performance and stability. Tried 13.4 and 13.8 beta 2, uninstalled the same day. I’m talking about Linux of course.

                                1 Reply Last reply Reply Quote 0
                                • First post
                                  Last post