Actually to be honest I run my rig in a serverroom with air conditioning and permanent temperature cca 17 degrees Celsius. On top of that I have a 30cm cheap desk fan blowing on my cards. But even without that R280x must not generate more than 80 degrees celsia. What is your whole GGMiner config now, can you paste it here? There must be something totally wrong with your cards. Haven't you somehow overclocked or overvolted via MSI Afterburner or some other shit? I haven't touched those special tools, the only overclocking I did is via CGMiner parameter --gpu-engine. I run over 85 degrees when mining Scrypt coins, but can't be with HeavyCoin.
Well, I also have a server room with Running A.C. at 20-22 degrees Celsius always & I have my rigs placed in open kitchen baskets with enough air circulation. I have done nothing with any third party software/tools to change the default GPU settings either. All my cards are running at default parameters. I didn't add any config file to the CGMiner yet, just changed the wallet address in the .bat file. When I tried to write config file by going to CGMiner Settings it gave me the following,
{
"pools" : [
{
"url" : "stratum+tcp://hvcpool2.1gh.com:5333",
"user" : "My Wallet Address",
"pass" : "x"
}
]
,
"intensity" : "8,8",
"vectors" : "1,1",
"worksize" : "256,256",
"kernel" : "heavy,heavy",
"gpu-engine" : "0-0,0-0",
"gpu-fan" : "0-85,0-85",
"gpu-memclock" : "0,0",
"gpu-memdiff" : "0,0",
"gpu-powertune" : "0,0",
"gpu-vddc" : "0.000,0.000",
"temp-cutoff" : "95,95",
"temp-overheat" : "85,85",
"temp-target" : "75,75",
"api-mcast-port" : "4028",
"api-port" : "4028",
"expiry" : "120",
"failover-switch-delay" : "60",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "2",
"log" : "5",
"log-dateformat" : "0",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "60",
"heavy" : true,
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin"
}
