my GPU 7850 amd has a problem I was told made it not a good choice for dual Poem units but I was thinking would it work well here ? does anyone run 2 GPU units at once ?

you have to create cc_config.xml file in your BOINC folder.
file should contains this:

<cc_config>
<options>
<use_all_gpus>1</use_all_gpus>
</options>
</cc_config>

sorry I meant 2 gpu work units on one gpu card . I was tired and got the wording

You have to create app_config.xml file in your project folder.
File should contains this:

<app_config>

<app>
<name>milkyway</name>
<max_concurrent>8</max_concurrent>
<gpu_versions>
<gpu_usage>.5</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>.5</gpu_usage>
<cpu_usage>.05</cpu_usage>
</gpu_versions>
</app>

</app_config>