VTX3D Radeon R9 280X - Low Hash rate on all coins

edited July 2014 in Hardware support

Hi all,

Is anybody using VTX3D 280X cards? I'm struggling to get over 400Kh/s on LTC, 150Kh/s on VTC and only 1.7Mh/s DRK. 

Almost all other 280X cards seam to be getting almost double what I get....

I've tried numerous configs and settings but any higher results in the cards crashing almost instantly

Below is an example of VTC that gets me 150ish on one card, if I connect all 5 and change the settings to reflect 5 cards its game over....

"intensity" : "13",
"worksize" : "256",
"lookup-gap" : "2",
"thread-concurrency" : "8192",
"gpu-engine" : "1070",
"gpu-memclock" : "1250",
"gpu-powertune" : "-20",
"gpu-fan" : "0-85",
"temp-cutoff" : "95",
"temp-overheat" : "85",
"temp-target" : "75",
"auto-fan" : true,
"expiry" : "30",
"gpu-threads" : "1",
"scan-time" : "5",
"kernel-path" : "/usr/local/bin"


ASRock H61 Pro BTC
2 x 750w PSU with ADD2PSU adapter
5 x VTX3D Radeon R9 280X with powered risers and latest drivers
Win8 x64

Any advice will be greatly appreciated ;-)


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