This topic had been discussed before.  Here is the list of validated OEM PSU, credited to DELL-Chris M Precision T7810, validated OEM PSU =T31JM 1300W, EPA, CHICONYFT7T6 825W, EPA, CHICONYK61PK 825W, EPA, CHICONYW1FJK 825W, EPA, DELTAC2TXD 825W, EPA, DELTAW4DTF 685W, EPA, CHICONYCT3V3 685W, EPA, CHICONYCYP9P 685W, EPA, DELTAVDY4N 685W, EPA, DELTAK8CDY 685W, EPA, FLEXTRONICKTMT8 685W, EPA, FLEXTRONIC
I have using the original 685W PSU for my T7810, I would like upgrade the PSU to 1300W for the 3070 display card. But i not sure which model 1300W can compatible with my T7810. I heard someone said the PSU have the different on the model number (e.g. -00, -01, -02) My exiting PSU model :H685EF-00 DP/N:W4DTF Can I upgrade to model: H1300EF-02?    DP/N:T31JM
Precision T7810 PSU model number