Hi All,
Did some searching, couldn't find anything specific so thought I'd ask.
I have 2 rigs, both 3 x r9 290. Both have identical CPU, mobo, RAM, PSU same version of Ubuntu, same version of drivers, hardware all purchased at the same time...You get the idea...
The only difference is one rig's 290's are XFX, and the others are VTX3D.
Machines are sat near to each other (so environment is essentially the same), and both mining the same pool(s)....Yet I'm seeing roughly a 10% drop in performance on the VTX system compared to the XFX (measured this over a number of days so enough time for fluctuations to average out).... I thought all reference cards were the same, was wondering if I'm missing something? I even copied the cgminer.conf from one system to the other, so even that's identical.
Was hoping someone could shed a little light on this?? Thanks in advance for any thoughts...
P.S I'm aware I'm not pushing the cards quite as hard as I could, but I wanted to stay at roughly stock clock and mem till I'm really comfortable with the setup(s).
"intensity" : "20,20,20",
"vectors" : "1,1,1",
"worksize" : "256,256,256",
"kernel" : "scrypt,scrypt,scrypt",
"lookup-gap" : "2,2,2",
"thread-concurrency" : "32765,32765,32765",
"shaders" : "0,0,0",
"gpu-engine" : "938-938,938-938,938-938",
"gpu-fan" : "0-65,0-65,0-65",
"gpu-memclock" : "1250,1250,1250",
"gpu-memdiff" : "0,0,0",
"gpu-powertune" : "0,0,0",
"gpu-vddc" : "0.000,0.000,0.000",
"temp-cutoff" : "95,95,95",
"temp-overheat" : "85,85,85",
"temp-target" : "75,75,75",
"api-mcast-port" : "4028",
"api-port" : "4028",
"expiry" : "120",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "1",
"hotplug" : "5",
"log" : "5",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "30",
"scrypt" : true,
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin"
XFX SYSTEM
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(5s):2.428M (avg):2.408Mh/s | A:3868160 R:125952 HW:0 WU:2220.2/m
ST: 2 SS: 0 NB: 2958 LW: 29143 GF: 0 RF: 0
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GPU 0: 83.0C 3542RPM | 802.4K/801.0Kh/s | A:1273856 R:40448 HW:0 WU: 731.9/m I:20
GPU 1: 84.0C 3626RPM | 804.6K/799.8Kh/s | A:1269248 R:38912 HW:0 WU: 725.9/m I:20
GPU 2: 79.0C 3581RPM | 809.6K/808.0Kh/s | A:1325056 R:46592 HW:0 WU: 762.5/m I:20
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VTX3D SYSTEM
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(5s):2.240M (avg):2.234Mh/s | A:3526656 R:112640 HW:0 WU:2021.1/m
ST: 2 SS: 7 NB: 2975 LW: 29087 GF: 1 RF: 0
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GPU 0: 81.0C 3631RPM | 743.1K/744.4Kh/s | A:1160192 R:41472 HW:0 WU: 668.7/m I:20
GPU 1: 82.0C 3489RPM | 743.2K/745.0Kh/s | A:1158144 R:37888 HW:0 WU: 665.8/m I:20
GPU 2: 71.0C 3396RPM | 747.3K/745.0Kh/s | A:1208320 R:33280 HW:0 WU: 686.6/m I:20
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