Re: I need help with radeon hd 7950

Try this configuration:

cgminer.exe --scrypt -o http://xxx -u xxx -p xxx --lookup-gap 2 --gpu-fan 100 --temp-cutoff 77 --gpu-engine 1000 --gpu-memclock 1350 --gpu-vddc 1.105 --shaders 1792 --thread-concurrency 21712 -g 1 -v 1 --worksize 256 -I 17

I use cgminer 3.4.2

I tried that but I got error : GPU 0 failure, disabling !!
I must admit that my cpu is AMD athlon X2 dual core 5200+ 2.70 GHz
and I use 2gig ram DDR 2
my board is a gigabyte GA-M56S-S3 with 200 Megahertz bus clock
I want to know that if hardware failure and "GPU 0 failure, disabling !!" are cause by my poor hardware or not ?
and and I also want to know that is it necessary to upgrade my rig or not?
thanks a lot for taking time

Try:

cgminer.exe --scrypt -o http://xxx -u xxx -p xxx --lookup-gap 2 --gpu-fan 100 --temp-cutoff 77 --shaders 1792 --thread-concurrency 21712 -g 1 -v 1 --worksize 256 -I 17

Model of power supply? Is it at least 20/25 amp on the 12v+?

I am using Green GP1030B Power and hre is the specs http://www.green-case.com/products/power/power.php?model=GP1030B

As indicated in the specifications of your power supply the only channel above 20 amp is channel 12V4 + (which is 26amps). So you must to connect the GPU to this channel (only GPU and no other things like HD, other PCI accessories,fan...) otherwise you do not have enough power to handle LTC mining.

This is a table with the power requirements of each GPU:
http://forum-en.msi.com/faq/article/printer/power-requirements-for-graphics-cards

how do you see the 7950 requires 25amps.