[TIPS] Radeon HD 6870 Voltage Check Points (VDDC, VDDCI and MVDD)



Radeon HD 6870 VDDC check points
Reading of the voltage of one phase feeding the GPU



Here is the localization of the different voltage measurement (or v-check) points on the Radeon HD 6870 PCB (back side):

Radeon HD 6870 voltage check points (2 pictures total)

Radeon HD 6870 VDDC check points



VDDC is the GPU core voltage (there are 4 x 2 points because 4 phases feed the GPU). MVDD is the memory voltage and (correct me if I’m wrong) VDDCI is the I/O bus voltage (between memory and GPU core) and comes from the PCI-Express slot.

[source]




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