nVidia GK106 GPU core - hidden cluster?

[spirits247]

I've noticed there is no core view of the GK106 chip released by nVidia. They claim the GTX 660 uses the full chip.

However five clusters? Doesn't make sense. GK104 is eight, the GK106 would most likely be six however it may have performed too well to be fully enabled.

Do you think there is a hidden cluster, just waiting to be released in the future?

 

[spirits247]

So, no real shot of the GK106's internals eh nVidia?

I expect it would look something like this:

http://wccftech.com/nvidia-launch-gk106-skus-including-workstation-board/

Six clusters, not five.

Just for reference, a real GK104 core was proudly displayed by nVidia in the past:

http://www.guru3d.com/articles-pages/gigabyte_geforce_gtx_660_ti_windforce_oc_review,4.html

No such image for the GK106.