I've got the
MSI Radeon R9 280X OC and I've had no problems with it..
If I'm honest, I struggled a bit getting it set up and running at 740-750 khash/s because when I first put it in I got 580 khash/s average.
Although I am running it on the same board as my NVidia GTX 770 and that was probably one of the biggest contributing factors to the problems I had.
It's got the default cooler on and running at 75°C average with the fan at 100%.. Honestly it isn't that loud (no where close to as loud as my 770 at 100%).
Here is my config for when you get it:
"expiry" : "1",
"hotplug" : "5",
"no-submit-stale" : true,
"queue" : "0",
"scan-time" : "1",
"scrypt" : true,
"shares" : "0",
"gpu-threads" : "4",
"gpu-dyninterval" : "7",
"gpu-engine" : "1080",
"gpu-fan" : "100",
"gpu-platform" : "0",
"gpu-memclock" : "1500",
"gpu-memdiff" : "0",
"gpu-powertune" : "20",
"gpu-vddc" : "0.000",
"intensity" : "13",
"temp-target" : "75",
"temp-overheat" : "85",
"temp-cutoff" : "88",
"temp-hysteresis" : "3",
"vectors" : "1",
"worksize" : "256",
"lookup-gap" : "0",
"shaders" : "2048",
"thread-concurrency" : "11200",
"no-pool-disable" : true
For some reason it is important to run it at 13 intensity and OC it to 1080. Anything above and I lose khash/s exponentially.
https://dl.dropboxusercontent.com/u/27958831/shared/Crypto/R9280X_Small.png
