Quote from: SnakeEater on February 15, 2014, 06:02:22 AM

Quote from: Mobsy on February 15, 2014, 01:18:12 AM

I managed to get my 2x R9 280x vapor x working @ 375kh/s each

here are my settings:

setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100

cgminer --scrypt -o stratum+tcp://stratum12.dogehouse.org:9091 -u x -p x -I 13 -g 2 -w 256 --lookup-gap 2 --thread-concurrency 8192 --gpu-engine 1076,1072 --gpu-memclock 1500,1500 ---temp-cutoff 85 --temp-overheat 80 --temp-target 75 --auto-fan

,
"intensity" : "13",
"worksize" : "256",
"lookup-gap" : "2",
"auto-fan" : true,
"gpu-fan" : "70-80,70-80",
"gpu-engine" : "1076,1072",
"gpu-memclock" : "1500,1500",
"gpu-powertune" : "10,10",
"thread-concurrency" : "8192",
"expiry" : "30",
"gpu-threads" : "2",
"scan-time" : "5"

Temperatures are 59 for first and 70 degrees for the second one.

Any recomandations for some risers? I can't seem to make up my mind on what I see online.

Can share 3 more info?

1. Pool Difficulty for the Worker
2. Reject, Hardware Error, Working Unit
3. Miner version cgminer? verminer?

I notice my hashrate remains over 440kH for R290 but WU fluctuate depending on the pool difficulty for worker. When difficulty is below 32, WU is very close to 400. When the difficulty going up to 64,128 or even 256, the W.U. drop drastically to less than 380kH/s.

If you have 2 GPU most likely I guess your difficulty will be maximum at 256 or more and WU propably only 70% of 375x2 = 525kH/s if you are using traditional pool.

http://s28.postimg.org/mei9yoqot/bitcrush.jpg

WU varies between 650 and 750. No HW or rejects. Pool difficulty varries.