Quote from: MikkaMK on February 17, 2014, 01:39:08 AM

Quote from: DannyAves on February 15, 2014, 09:31:14 PM

Quote from: MikkaMK on February 15, 2014, 08:45:58 PM

Quote from: KS on February 15, 2014, 03:46:41 PM

Quote from: MikkaMK on February 15, 2014, 03:36:29 PM

Having very high reject rates with new rig running 2x r9 290 tri-x runni sgminer and 13.11 beta drivers. Bat file as follows

sgminer -o stratum+tcp://middlecoin.com:3333 -xxxx-p x -I 23 -w 256 --thread-concurrency 32765 --gpu-engine 1020 --gpu-memclock 1500 --gpu-fan 85 --temp-target 88 --temp-overheat 92 --temp-cutoff 98 --gpu-powertune 20

Can't get these cards running with cgminer at all.

Any suggestions?

"-I" is too high. Start with 18/19/20. Check the hahsrate/rejects/WU and settle for the best values (depends also on what server you're hashing).

GPU and memclock might be too high as well. safer settings are 947/1250 or 975/1350 or 987/1425. Let it run a while (day or two), see if anything goes sick/dead/off. Have a good PSU?

I have 4xr9 290 cards running those setting stable and no issues, strange these cards don't like it. Tried intensity lower keep getting display adapter failed message it runs perfectly for 10 mins thn get the error. Psi is good antec 850w.

I am no expert but I would think to run 4xr9 290 you need at least 1200w, preferably 1300w.

Sorry, i am running cgminer on one rig with 4x R9 290 cards and an antec 1300w psu with the following settings

--lookup-gap 2 -I 20 -g 1 -w 512 --thread-concurrency 28456 --gpu-engine 1020 --gpu-memclock 1500 --gpu-fan 85 --temp-target 88 --temp-overheat 92 --temp-cutoff 98 --gpu-powertune 20

on middlecoin currently getting rejects of around 15%

second rig has 2 x R9 290 Tri-x couldnt get it running with cgminer so read a few threads saying sgminer is better for those cards. litecoin mining hardware comparison page recommended settings had intensity of 23 thats why i ran it at that. Currenly running that rig with the following settings:

-I 20 -w 256 --thread-concurrency 32765 --gpu-engine 975 --gpu-memclock 1350 --gpu-fan 85 --temp-target 88 --temp-overheat 92 --temp-cutoff 98 --gpu-powertune 20

on middlecoin i was getting around 40% rejects. I switched both machines over to altcoinplex just to try it out, rejects went to around 3%. With that being said no to confident with that pool, my total hashrate is 5.2mh/s and their stats page was only showing up as 3.3. Payout looks really low as well.

I=20 and rejects of 15% are normal. Go down to 19 or 18. The reason you're getting so many rejects is because the pool is changing coins frequently and you're submitting old data.

When you talks about Sgminer and an intensity of 23, you probably mean XIntensity.

XIntensity=23 is your number of shaders times 23= 2560 x 23= 58880 threads. I=23 is 2^23 times your shaders = 8388608 x 2560 = 21474836480 threads.

Also, don't use I with XIntensity, they don't go together.

Google is your friend: http://www.overclock.net/t/1461916/tutorial-ultimate-guide-to-tweaking-amd-cgminer-3-7-2-kalroth-edition-sgminer-instructions-included-aswell-get-the-most-hash-out-of-your-gpu