Title: Terrible hashrates on my 7970's... Post by: nightwolf92 on April 22, 2013, 08:45:31 PM Hey guys, I just installed 2 7970's yesterday and actually broke my 7950 in the same day... but thats a different story...
My problem is i finally after months got CGMiner to work! Got the AMD SDK and most recent version of Catalyst. However with the 2 cards together each is getting about 380 Kh/s I took screenshots for your convenience. :) CGMiner: https://i.imgur.com/fNrSJ77.jpg CGMiner Settings: https://i.imgur.com/iP6UCfl.jpg Catalyst Control Center: https://i.imgur.com/82a3rMD.jpg If im missing anything please let me know!! I still have 2 more 7970's and 1 7950 on the way By the way I did post on the CGminer thread... anddd people just posted past me disregarding it so im bringing it to my own thread. Thank you very much. Title: Re: Terrible hashrates on my 7970's... Post by: nightwolf92 on April 23, 2013, 04:30:11 PM BumP:
can someone please help Title: Re: Terrible hashrates on my 7970's... Post by: runlinux on April 23, 2013, 04:33:58 PM Are you mining litecoins or bitcoins?
From what I see you are mining litecoins. If so, I *think* that number is fine. EDIT: I'd have to test on my 7970 to see what I get. I'm getting 685MH/s mining BTC. I thought the LTC process was about 1000x slower. Title: Re: Terrible hashrates on my 7970's... Post by: Mylon on April 24, 2013, 02:57:36 PM BumP: start reading the manual of cgminer, specifically the latest version.can someone please help Title: Re: Terrible hashrates on my 7970's... Post by: nightwolf92 on April 24, 2013, 03:32:46 PM I have read the manual multiple times... im mining litecoins but it should be around 700 KH/s
my settings were listed as set by other users but im still getting the same bad hashrates... Title: Re: Terrible hashrates on my 7970's... Post by: crazyates on April 24, 2013, 03:47:28 PM LTCs are a bitch. Like a really temperamental bitch. The same settings on two identical computers can yield totally different results. I tried it once, and I couldn't get my 7970 above 580KH/s, even following CK's guide for tweaking.
That said, CGMiner has 2 READMEs, 1 for the program, and one for SCRYPT. The second one has suggestions and a guide for tweaking your settings. Title: Re: Terrible hashrates on my 7970's... Post by: nightwolf92 on April 24, 2013, 04:41:53 PM ok ill check that out and get back to you ... please stay updated on this post! I would really appreciate the help!
Title: Re: Terrible hashrates on my 7970's... Post by: Viceroy on April 24, 2013, 07:55:50 PM it's always heat. or a failing chip/mb.
when my cards start they mine beautifully, then after 10 minutes they can crap out. so I identify the crap cards by running: -d 0 -d 1 etc on the command line. Then I turn off the card that is causing problems (usually a fan and overheating). then i mine like a king. (or a viceroy). Title: Re: Terrible hashrates on my 7970's... Post by: crazyates on April 24, 2013, 09:26:25 PM it's always heat. or a failing chip/mb. I was running my LTC 7970 at Powertune: +20% and the temps were still in the 60C, so it's not heat. It continues to mine, but just can't get the hashrate up there like I know other people are. when my cards start they mine beautifully, then after 10 minutes they can crap out. so I identify the crap cards by running: -d 0 -d 1 etc on the command line. Then I turn off the card that is causing problems (usually a fan and overheating). then i mine like a king. (or a viceroy). Title: Re: Terrible hashrates on my 7970's... Post by: Viceroy on April 25, 2013, 12:14:00 AM I've noticed that problems occur across the motherboard. My test (-d 0, etc) is to shut off a bad card and see if the other cards do not remain at speed.
my setup: I have 2 cards and each has 2 gpus so I have 4 gpus command line: ./cgminer .... -d 0 -d 1 -d 2 but not -d 3 so the last one doesn't come on. Then I see if the other three remain stable. IF they do not i try another combination of 3 like: -d 0 -d 1 -d 3 (so not running -d 2). By testing the cards in this way I can determine if a GPU is causing problems. My experience has been that I can get 3 out of 4 gpus stable (at 260 each) which is better than all 4 running at 145 ish. And turning off a bad gpu through this method seems to allow me to keep the "good" gpu's operating at full speed. time to ship back some more cards.... |