Hey Guys,

So I've made some progress...I upped my mem clock to 1625 mhz, which allowed me to go to -I 13 without any hardware errors.

Here's my line now:

-I 13 -w 256 --shaders 1792 --gpu-engine 1085 --gpu-memclock 1625 --gpu-vddc 1.150 -g 2

I'm sitting around 925kh/s (both gpu's together)...it's better, but still not where I'd like to be.

Another weird thing:
GPU 0 62 degrees, 545 kh/s
GPU 1 76 degrees, 386 kh/s

Any idea why GPU 1 is running so much hotter and slower than GPU 0?

I think -I 13 is right for me, but do you guys have any ideas of how to get to ~600kh/s like I see everyone else at?

Thanks again!!!

Thanks, yeah I went though the readme and pretty much got to where I was before.  Do you think it's maybe thread concurrency that could be causing the problem?  Also, I tried going -g 1 and -I 13 and I was getting a whole lot of HW errors again...any ideas?


I tried dropping the clock to 850mhz and then messed around with it a bit and it significantly lowered my kh/s - but I have heard this before.

Hi all,

I'm new to this forum and relatively new to altcoin mining, so go easy on me :-)

I recently purchased 2x 7950s and want to put them to use!  I'm using MSI Afterburner to overclock them to 1085/1500 which I understand to be a pretty respectable overclock (with +20% power usage as well)

So, here's my config in cgminer: cgminer.exe --scrypt -o SERVER -u UN -p PW -I 12 -w 256 -g 2

A few things:

1.  Anytime I crank up the intensity past 12, I get serious hardware errors.  Is this weird because most of the people I see mining with similar hardware are seamlessly doing it on I 20.

2. I looked at the .bat output from cg miner and the file name is: scrypt130511Tahitiglg2tc4032w256l4  This means my tc is only 4032?  I thought the minimum was 8000-something?  And does this also mean the intensity is actually only 4?

With these current settings I'm getting about 400kh/s per card, but am aiming for around 500.

Any additional help you guys can provide would be greatly appreciated.

Thanks!