New cgminer 3.7.7b settings 4 U.
280x @stock 1020/1500 Hynix - 138-143 khash - catalyst 14.9 w/ 14.7-rc3 openCL files copied to cgminer's folder
-g 3, -w 64, -i 14 .. HW and artifact free for 20 minutes now !
http://img.techpowerup.org/141103/NEO142khash280x.jpgupdate
1 HW
update ii
cgminer will randomly set the thread concurrency on almost every startup. eg. it chooses 4096 or 8192 or 16384.
I will soon know if the HW error was caused by the 4096 bin in use at the time. Currently running a 16384 bin..
36 hours later I'm averaging 139 khash with only 4 HW errors.
This is pretty much what I am getting as well, except my settings are slightly different. Also no matter how many times I try to regenerate a new bin file, my install will always pick 8192 for thread concurrency.
280x -i 13 -w 48 -g 2 GPU clocks 1025/1500
http://img.techpowerup.org/141104/neoscript.jpgI also have another box, basically identical build to the above (3x 280x cards) that prefers -g 1 instead of the -g 2 shown above, with all the other settings and clocks set the same.
What make/model cpu, mobo and ram are you running ?
My rig: Phenom II x6, Asus SB 990fx, GSkill 9-9-9-24 2T
I just bumped it up to 4 threads and gained 2 kash. WOOT !
It's a Gigabyte GA-Z77-DS3H with a Intel Celeron G1630 (2.8 GHz), ADATA 4 GB RAM, not sure timings, on Win 7 Pro 64 bit, 80 GB SDD (Intel).
Most of my rigs are a similar build as they were put together more with cost in mind for BTC, and eventually scrypt, mining last year. I pretty much stuck with Intel boards, so seeing you have AMD based rig might make the difference. When I mined scrypt the few AMD boards I did own seemed to not do as well, so I sold them off early this year when the prices started to drop off. Anyway, presently I have no way to compare between AMD/Intel based MB/CPU setups to see if that make a big difference.
Seeing the FTC profitability falling fast, I would like to get another 20 kHash or more per card out if possible, but seems to be hitting a brick wall with getting much past 140 kh right now.
I calculate my 3 X rig puts out a consistent 138 kh x 3 = 414 kh total. Power draw at the wall is around 540 watts, bringing me to roughly 0.76 kh/watt efficiency. I pay $0.11 per killawatt hour for power, so using today's calculations, I get the following:
Per Est. Rewards Pool fee Rev. BTC Rev. $ Costs Profit
Hour 2.42729 0.00000 0.00020 $0.09 $0.06 $0.03
Day 58.25485 0.00000 0.00472 $2.12 $1.45 $0.67
Week 407.78395 0.00000 0.03303 $14.86 $10.16 $4.70
Month 1,747.64550 0.00000 0.14156 $63.70 $43.56 $20.14
Year 21,263.02025 0.00000 1.72230 $775.04 $529.98 $245.06
So while still slightly profitable, it would be nice to crank up the hashrate a bit more and stay in the black awhile longer.