Author Topic: new mining rig problems 3xHD7950 (Read 5836 times)

gilles2512 · « **on:** November 23, 2013, 09:01:10 AM »

Hi, i've received my 3 HD7950 MSI this morning, but i didn't arrive to run cgminer 3.8.2 (windows 8.1) , actually, i'm now running with the 3.7.2, and it's ok but i have only 800mh for 3 HD7950 and normally it's 800 for only one …. To test , i've launch bit minter client and there i've 1200 mh

For the moment i don't change the settings of the GPU , i juste put " -I 13" in cgminer because otherwise i have only 250mh for the 3.It is normal that the cgminer 3.7.2 works and not the 3.8.2 ?Can you help me to increase my hash rate ?thanks

goshev · « **Reply #1 on:** November 23, 2013, 01:49:04 PM »

The 3.8.x cgminer cannot be used for Litecoing GPU mining so stick with the 3.7 branch.

As for the hash rate increase read around the forum though there is a lot of info here.

Sent from my iPhone using newbielink:http://tapatalk.com/m?id=1 [nonactive]

gilles2512 · « **Reply #2 on:** November 23, 2013, 09:11:26 PM »

thanks, now it's working correctly ( 1100mh for 2 HD7950)

but cg miner tell me 1100kh and my pool website only 21kh ….. can you help me ?
thanks so much

goshev · « **Reply #3 on:** November 24, 2013, 12:14:38 PM »

You said you have 3 cards but on the cgminer it shows you are using only 2 GPUs. As the difficulty increases your hashrate will drop a bit.

However play with the card settings you should be able to get it up to 600ish per CPU. As for your pool the 21kh this should be overall for all the miners in the pool though. This is important but in your case is not important for you at this point as you are still tweaking your rig configuration.

Which pool are you using?

gilles2512 · « **Reply #4 on:** November 24, 2013, 01:11:21 PM »

I'm using wemineltc.com (but i've tested give-me-coins) Yes, i'm sorry for the confusion, i will use only 2 card during a first period. yes, if i put intensity higher , i have 600kh but a lot of HW,

Can you explain me how to have a higher hash, but without having a lot of HW ? but actually, i put intensity on 12 , i have only 250kh per card

Thanks

gilles2512 · « **Reply #5 on:** November 24, 2013, 01:13:15 PM »

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new mining rig problems 3xHD7950