Quote from: nastynate on February 09, 2014, 07:31:00 PM

Quote from: ytreeewq on February 09, 2014, 05:21:42 PM

I've got similar problem with Gigabyte r9 280x.

I can't in any way get over 300 kH/s. Well it would be nice if it reached something about 350 kH/s ; )

My current settings:

Code:

-I 13 --thread-concurrency 8192 -g 1

Any ideas?

And also one thing is bothering me, why I can't set 2 gpu threads (-g 2)?
It's impossible in any configuration : (

I think the gpu threads is probably your problem, but I don't know why you can't set -g 2.
I am running 4 Gigabyte R9 280X cards in one of my rigs on Xubuntu 13.10 and vertminer 0.5.3, gpu BIOS undervolt @ 1.094V. Still tinkering but these settings are what I'm using for now:

Code:

--scrypt-vert -I 13 -g 2 -w 256 --thread-concurrency 8192 --gpu-engine=1025 --gpu-memclock=1500 --gpu-powertune=20

http://i57.tinypic.com/29aurg0.jpg

I tried your settings, thinking maybe the gpu-powertune=20 will help, but I'm still getting this error, if gpu-threads parameter is set to 2:

Code:

Error -4: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel)

However in the meantime I reached stable 325 kH/s with these settings:

Code:

-I 19 -w 256 --thread-concurrency 8192 -g 1