Gpu-z shows my gtx 770 factory oc 2gb vddc and vddc power arent continuous. While idling they change from vddc 0.850 V to -- V and vddc power about 2 W to -- W. This happens while gaming too. Very very often, and looks random.
Specs:
Msi gtx 770 twin fronz oc 2gb
i5 4670k
Asrock z87 extreme4
Seasonic G-series 650w


Specs:
Msi gtx 770 twin fronz oc 2gb
i5 4670k
Asrock z87 extreme4
Seasonic G-series 650w