1,880kh/s cgminer config for three PowerColor 7950s. All cards are undervolted from 1.25 1.081. GPU 0 and GPU 2 are stock cooling, but still differ in performance characteristics and thus require slightly different parameters for optimum utilization and efficiency. GPU 1 is the same card that I modified with a aftermarket cooler - Gelid Icy Visi…

cgminer.conf

{
"pools" : [
	{
		"url" : "stratum+tcp://<url>:<port>",
		"user" : "username.worker",
		"pass" : "a"
	},
	{
		"url" : "stratum+tcp://<url>:<port>",
		"user" : "username.worker2",
		"pass" : "a"
	}
]
,
"intensity" : "20,20,20",
"vectors" : "1,1,1",
"worksize" : "256,256,256",
"kernel" : "scrypt,scrypt,scrypt",
"lookup-gap" : "0,0,0",
"thread-concurrency" : "21712,21712,21712",
"shaders" : "0,0,0",
"gpu-engine" : "1025-1025,1100-1100,1050-1050",
"gpu-fan" : "0-88,0-88,0-88",
"gpu-memclock" : "1500,1650,1500",
"gpu-memdiff" : "0,0,0",
"gpu-powertune" : "18,20,19",
"gpu-vddc" : "0.000,0.000,0.000",
"temp-cutoff" : "85,85,85",
"temp-overheat" : "84,84,84",
"temp-target" : "75,75,75",
"api-listen" : true,
"api-mcast-port" : "4028",
"api-port" : "4028",
"expiry" : "120",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "1",
"log" : "1",
"no-pool-disable" : true,
"no-submit-stale" : true,
"queue" : "1",
"scan-time" : "30",
"scrypt" : true,
"temp-hysteresis" : "3",
"shares" : "0",
"load-balance" : true,
"kernel-path" : "/usr/local/bin",
"api-allow" : "127.0.0.1"
}