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Title: Powercolor r9 280x good for mining? Post by: Hannan on February 06, 2014, 05:49:05 AM Hi
Just wonder are these cards good for mining? any idea? Thanks Title: Re: Powercolor r9 280x good for mining? Post by: crazyates on February 06, 2014, 06:02:13 AM We have a bunch of the Powercolor 290 cards. They use the Elpida ram, and don't really go much higher than 800.
For 280x, stick with good brands: Sapphire, Gigabyte, Asus, or MSI. Title: Re: Powercolor r9 280x good for mining? Post by: pf22100 on February 06, 2014, 06:57:54 AM I just finished a rig with 4 running on a 860watt PS. I've undervolted them and use SGMINER on windows 8.1. Getting 725-730 hash rate. Two are Elpida and two are Hynix memory. Just trying to figure out why one tends to go sick. Might tweak the voltage up a bit, or take a card out and see if it still persists. Otherwise, they seem ok, but I've only had them for under 2 weeks.
Title: Re: Powercolor r9 280x good for mining? Post by: aj178 on February 23, 2014, 08:22:51 AM new bee here, I just purchased 280x with bios 015.040.000.003.000000
windows7 professional 64bit. 13.12 catalyst and 2.9 sdk. sgminer4.0 can only generate 640-660khs pointing to [Suspicious link removed] "api-listen" : true, "expiry" : "120", "failover-only" : true, "log" : "5", "queue" : "1", "scan-time" : "60", "scrypt" : true, "auto-fan" : true, "gpu-threads" : "2", "gpu-engine" : "1020,1025", "gpu-memclock" : "1500,1500", "gpu-powertune" : "0,10", "intensity" : "13", "temp-target" : "75", "temp-overheat" : "82", "temp-cutoff" : "87", "temp-hysteresis" : "3", "vectors" : "1", "worksize" : "256", "lookup-gap" : "2", "shaders" : "2048", "thread-concurrency" : "8191" gpuz showing temp 79-82, gpu load 94-96%, vddc 1.15-1.17 |