Tyan GT62D-B7106 + S7106GMR-CGN: Why are CPUs slower than expected?

I recently got a used 1U server: Tyan GT62D-B7106 S7106GMR-CGN motherboard (Dual LGA 3647) I noticed that the CPUs were running abnormally slowly, not even reaching base clock frequency when all cores are active, even when the temperature isn t particularly high. Why? There seems to be a limit of around 180 W for both CPUs (or . . . Read More: Tyan GT62D-B7106 + S7106GMR-CGN: Why are CPUs slower…