Today i have lost 5BTC from Bittrex Exchange and the hacker stolen all my BTC,coins using two factor authentication.admin told me he can't do anything so guys be careful about your accounts.

I have also found they are other users BTC stolen from  Bittrex Exchange from the same way so remove all your BTC from Bittrex Exchange and store them in cold storage

I am having 3 Asus R9 280x with the following batch file i am getting total 15K/H

cgminer --scrypt-jane --sj-nfmin 4 --sj-nfmax 30 --sj-time 1388949883 -o stratum+tcp://east1.us.stratum.dedicatedpool.com:3364 -u xxx -p xxx  -w 256,256,256 -I 8,8,8 -g 2 --lookup-gap 2,2,2 --gpu-powertune -20,-20,-20 --temp-overheat 85,85,85 --temp-cutoff 90,90,90 --gpu-memclock 1500,1500,1500 --gpu-engine 1000,1000,1000 --thread-concurrency 8191,8191,8191

Can some one help me how to get proper hash on these cards

Thanks for your help

[Details]

I am using two Asus R9 280X crads for mining and if i use some specific setting my display drivers crash after that hash rate suddenly drops to 200kh/s

Details

Card Model:- Asus R9 280X DirectCU II

Driver Packaging Version:- 13.251-131206a-166389C-ATI

Catalyst Version:-13.12

Operating Syatem:- Windows 8.1 64bit

Some extra information

If i use the following settings it is working without any display drivers crash but i am getting 700kh/s per card

Code:

-I 13 -g 2 -w 256 --thread-concurrency 8192

If i use the following setting display drivers are crashing after 10-15min but that time i am getting 760 kh/s

Code:

-I 13 -g 2 --thread-concurrency 8191 --lookup-gap 0 --gpu-engine 1100 --gpu-memclock 1500

Can you please let me know how to get best hash rate without crashing display drivers.

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Hi,

I have two new MSI AMD HD 7970 cards and using multiminer to do dogecoin.One card seems to work properly and the other card stops hash after 10min to make it work i have to stop and start multiminer.

Can you let me know what could be causing this and i have also tried changing card fan speed,temp control settings but no use.

Thanks for your help