2 280x's on a x8/x8 MoBo but can't get over 75% util. Is my problem that I need at least x16/x8? I've been playing with app_config but it makes no difference how I set it.

Come on, one of you high rollers knows the answer to my question. Please.

<app_config>

<app>
<name>milkyway</name>
<max_concurrent>8</max_concurrent>
<gpu_versions>
<gpu_usage>.25</gpu_usage>
<cpu_usage>.05</cpu_usage>
</gpu_versions>
</app>

<app>
<name>milkyway_separation__modified_fit</name>
<max_concurrent>8</max_concurrent>
<gpu_versions>
<gpu_usage>.25</gpu_usage>
<cpu_usage>.05</cpu_usage>
</gpu_versions>
</app>

<app>
<name>milkyway_nbody</name>
<max_concurrent>8</max_concurrent>
<gpu_versions>
<gpu_usage>.25</gpu_usage>
<cpu_usage>.05</cpu_usage>
</gpu_versions>
</app>

</app_config>

Thanks kararom,
Can you get your gpu's continuously operating at a high utilization rate?

don't understand the question

don't understand the question

I think Merle is asking...if you look in gpu-z do you see the gpu usage above 75% on a consistent basis using those settings?

don't understand the question

I think Merle is asking...if you look in gpu-z do you see the gpu usage above 75% on a consistent basis using those settings?

Yes that's right. Preferably over 90%.

GPU usage about 98%-100%

GPU usage about 98%-100%

Is your mobo 16 pcie lines or something more than that?

Another thing I am running only milky way for cpu and gpu 4 wu at a time.

PCI Express works in 8x mode

Each videocard counts for 4 jobs at the same time

CPU counts another CPU projects

http://milkyway.cs.rpi.edu/milkyway/show_host_detail.php?hostid=682977