bsmack (OP)
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Activity: 24
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February 04, 2014, 03:50:36 PM |
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I'm running 4x Gigabyte R9 280x OC edition cards. They are all undervolted at 1.144. After about 5 minutes, the AMD driver will become unresponsive and restart, and during that, card 4 will crash and stop hashing (doesn't read dead or sick, but pretty much all the sensors stop working on that specific card). The rest of the cards continue hashing with no issue. Here is my config file: "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" : "8192,8192,8192,8192", "shaders" : "2048,2048,2048,2048", "gpu-engine" : "1037-1037,1037-1037,1037-1037,1037-1037", "gpu-fan" : "0-85,0-85,0-85,0-85", "gpu-memclock" : "1500,1500,1500,1350", "gpu-memdiff" : "0,0,0,0", "gpu-powertune" : "20,20,20,20", "gpu-vddc" : "0.800,0.800,0.800,0.800", "temp-cutoff" : "90,90,90,90", "temp-overheat" : "85,85,85,85", "temp-target" : "75,75,75,75", "api-mcast-port" : "4028", "api-port" : "4028", "auto-fan" : true, "expiry" : "1", "gpu-dyninterval" : "7", "gpu-platform" : "0", "gpu-threads" : "2", "hotplug" : "5", "log" : "5", "no-pool-disable" : true, "no-submit-stale" : true, "queue" : "0", "scan-time" : "1", "scrypt" : true, "temp-hysteresis" : "3", "shares" : "0", I've tried downclocking the memory a considerable amount, but that doesn't seem to help. The cards are powered by an 850w and a 1000w psu (2 cards each, planning on a 3rd card for the 1000w). The mobo I am using is an Asus Z87 Pro with powered risers. I should also note that the cards don't ever go above 75 C when the driver crashes.
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