need lower intensity

[dmfree88]

Now that intensity is handled by shaders, for 270x and 7870 and 7850 we need lower intensity! Check out my guide here about kalroths:

http://www.overclock.net/t/1461916/tutorial-ultimate-guide-to-tweaking-amd-cgminer-3-7-2-kalroth-edition-sgminer-instructions-included-aswell-get-the-most-hash-out-of-your-gpu

you will see that they have done the same thing using xintensity. With xintensity 4 and 2 gpu threads I have been able to maximize hashrates and minimize stales on my 7870 and 270x. Please lower the intensity limit to 3 (i have used 3 before and seen good results aswell).

[marcelo-mason]

This would be ideal going forward.

[Bufius]

This makes no sense for the shader based intensity calculation. With the current implementation, a intensity of 3 will compute to 5 threads on a R270x. But the minimum allowed threads depends on workgroup size (e.g. 256)

Set shaders to 1280, workgroup size to 256 in config and use intensity 11 -> 1280 threads will be used (=xIntensity 1). If you need even lower values, use e.g. workgroup size of 128