@Schwede65
Thanks for your support of UPCPU !
HD6990 is two cores GPU, You should open two instances with different -d
(device id ) parameter with ominer now, refer the --help paramer for usage info.
So I think you may add two console CPM! We have tested HD5900 two Cypress cores in on card, get 1800 cpm+ in version v0.8 preview.
Anyhow, we will review HD6990 to get accurate CPM ! Thanks again !
Another good news! ominer 0.8 will released on Feb 7! New algorithm added optimization for HD5xxx and HD77xx, even HD69xxx may faster, please try and compare benchmark results later.
Blog introduce ominer v0.7 may give additional help here
http://upcpu.sinaapp.com/?p=79